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131. A V Kumar, D. Manoharan, A. Khapre, S. Ghosh,* R. Chandrasekar,*

An Extremely Pseudo-Plastic, Organic Crystal-Based Concentric-Ring-Resonator Coupled Optical Waveguide

Adv. Phys. Res. (2024), DOI:10.1002/apxr.202400075.

130. M. Rohullah, V. Vinay Pradeep, S. Singh, and R. Chandrasekar*

Mechanically controlled multifaceted dynamic transformations in twisted organic crystal waveguides

Nat. Commun. (2024), 15, Article number: 4040.

129. A Khapre, AV Kumar, R Chandrasekar*

Powering Monolithic and Hybrid Organic Optical Waveguides via Integrated Focused Micro-LEDs for Sustainable Photonic Circuits

arXiv preprint (2024), arXiv:2402.18889, [physics.optics].

128. M Chosenyah, AV Kumar, R Chandrasekar*

Mechanophotonics: Pseudo-plastic Organic Crystal as a Fermat Spiral Optical Waveguide

arXiv preprint (2024), arXiv:2402.18878, [physics.optics].

127. M. Rohullah, A. V. Kumar, and R. Chandrasekar*

A Pseudo-Plastic Organic-Crystal, Hybrid Directional Coupler Producing, Splitting, and Transducing Multi-Color Outputs

Laser & Photonics Reviews, (2024), DOI:10.1002/lpor.202400020.


126.  M. Rohullah, V. Vinay Pradeep, S. Singh, and R. Chandrasekar*

Mechanically-controlled multifaceted dynamic transformations in twisted organic crystal waveguides

ChemRxiv  (2023), DOI: 10.26434/chemrxiv-2023-7n8kp.

125. A. Vinod Kumar, M. Godumala, J. Ravi and R. Chandrasekar*

"A Pick-and-Place Technology Enabled, Mechanically Programmable, Spiral Optical Waveguides Integrated Hybrid Circuits from Four Extremely Pseudo-Plastic Organic Crystals for Visible Spectral Band Tunability"

Adv. Opt. Mater. (2023),  DOI: 10.1002/adom.202302807.

124. S. Panbarasu, A. Khapre, M. Chosenyah, A. Vinod Kumar,* and R. Chandrasekar*

"A Highly-Strained, Pseudo-plastic, Cu-pyridyl Coordination Polymer Crystal based Optical Waveguide-Cavity"

Chem. Mater. (2023), 35, 23, 10169–10177. [Invited manuscript to honor Prof. Elsa Reichmanis]


123. D. Barman, M. Annadhasan, A. Bidkar, P. Rajamalli, D. Barman, S. S. Ghosh*, R. Chandrasekar* and P. K. Iyer*

 "Highly Efficient Color-Tunable Organic Co-crystals: Unveiling Polymorphism, Isomerism, Delayed Fluorescence for Optical Waveguides and Cell-imaging"

Nat. Commun., (2023), 14, Article number: 6648.


122. V. Vinay Pradeep, A. Vinod Kumar, R. Chandrasekar*

"A Tandem Approach to Fabricating a Hybrid, Organic-Add-Drop Filter Using Single-Crystal Disk-Resonators and Pseudo-Plastic Crystal Waveguides"

Laser & Photonics Reviews, (2023), 17, 2300552.


121. V. Vinay Pradeep,  G. Ummethala, S. R. K. Malladi,* R. Chandrasekar*

"Focused Ion Beam Milling of Perylene Microcrystals into Photonic Modules: Effect of Substrate and the Ion Beam Current"

Crystal Growth & Design (2023), 23, 8, 5414–5420 [Invited paper for a special issue on Lattice Dynamics]


120. V. Vinay Pradeep, M. Chosenyah, E. Mamonov,* R. Chandrasekar*

"Crystal Photonics Foundry: Geometrical Shaping of Molecular Single Crystals into Next Generation Optical Cavities"

Nanoscale, (2023), 15, 12220-12226. [Invited article for a special issue on Fundamental processes in optical nanomaterials]

119. R. Chandrasekar*

"Advanced All-Organic Microphotonic Components and Integrated Circuits"

Adv. Opt. Mater., (2023),  11, 2301124. DOI:10.1002/adom.202301124. [Special Section Guest Editorial]

118. M. Annadhasan, A. Vinod Kumar, S. Nandy, P. Giri, M. K. Panda, K. V. J. Jose,* R. Chandrasekar*

"Dimension Engineering of Stimuli-Responsive 1D Molecular Crystals into Unusual 2D and 3D Zigzag Waveguides"

Angew. Chem. Int. Ed. (2023), 62, e202302929. DOI: 10.1002/anie.202302929 and 10.1002/ange.202302929.

117. A. Vinod Kumar, M. Rohullah, M. Chosenyah, J. Ravi, U. Venkataramudu and R. Chandrasekar* 

"Amphibian-like Flexible Organic Crystal Optical Fibers for Underwater/Air Micro-Precision Lighting and Sensing"

Angew. Chem. Int. Ed. (2023), 62, e202300046. DOI: 10.1002/anie.202300046.

116. V. Vinay Pradeep, and R. Chandrasekar,


Indian Patent Application, E-2/1199/2023/CHE & PCT/IN2023/050278 (23/Mar/2023)

115. W. Awad, D. Davies, D. Kitagawa, J. Halabi,  M. Al-Handawi, T. Marieh, T. Fei, C.-A. Gonzalo,  A. Shtukenberg,  T. alboshra, Y. Hagiwara, M. Almehairbi, L. Lan, S. Hasebe, D. P.  Karothu, S. Mohamed,* H.  Koshima,* S.  Kobatake,* Y.  Diao,*  R.  Chandrasekar,* H.  Zhang,* C.  Sun,* C. J. Bardeen,* R. Al-Kaysi,* B. Kahr,* P. Naumov*

"Mechanical Properties and Peculiarities of Molecular Crystals"

Chem. Soc. Rev. (2023), 52, 3098-3169.

114. A. Vinod Kumar and R. Chandrasekar* 

"Mechanophotonics: Fabrication of a 2x2 hybrid directional coupler from flexible organic crystals"

J. Mater. Chem. C (2023), 11, 7995-8001 [Invited for JMC C Anniversary Issue]

113.  A. Vinod Kumar, E. Mamonov, T.  Murzina* and R. Chandrasekar* 

"Race-Track type Resonator Integrated Active Add-Drop Filter from Flexible Organic Crystals: Experiments and Numerical Calculations"  

Adv. Opt. Mater. (2023), 11, 2201507.

112. N. Mitetelo, J. Ravi, S. Mondal, U. Venkataramudu, E. Mamonov, M. Popov, A. Maydykovskiy, G. Vaitheeswaran,* T. Murzina,* and R. Chandrasekar*

"An Organic Electro-Mechanical-Cavity Emitting Efficiently Tunable, Continuous-Wave-Pumped Non-Linear-Optical-Modes"

Adv. Opt. Mater. (2023), 11, 2201635. DOI:10.1002/adom.202201635.

111. A. Vinod Kumar and R. Chandrasekar*

"A Mechanophotonic Approach towards an Organic, Flexible Crystal Optical Interferometer"

Adv. Opt. Mater. (2023), 11, 2201009.  DOI:10.1002/adom.202201009.

110. J. Ravi, T. Feiler, A. Mondal, A. A. L. Michalchuk, C. M. Reddy, B. Bhattacharya,* F. Emmerling,* R. Chandrasekar*

Plastically Bendable Organic Crystals for Monolithic and Hybrid Micro-Optical Circuits

Adv. Opt. Mater. (2023), 11, 2201518. DOI: adom.202201518R1



109. A. Vinod Kumar, M. Godumala, J. Ravi, and R. Chandrasekar*

“A Broadband, Multiplexed-Visible-Light-Transport in Composite Flexible-Organic-Crystal Waveguide”

Angew. Chem. Int. Ed. (2022), 134,  e202212382.  [VERY IMPORTANT PAPER]

108. D. Barman, M. Annadhasan, R. Chandrasekar* and P. Iyer*

"Hot-Excitons Harvesting via Through-Space Single-Molecule Based White-Light Emission and Optical Waveguides

Chem. Sci. (2022), 13, 9004-9015.

107. R. Chinnasamy, J. Ravi, V. Vinay Pradeep, D. Manoharan, F. Emmerling, B. Bhattacharya*, S. Ghosh* and R. Chandrasekar*

"Adaptable optical microwaveguides from mechanically flexible crystalline materials"

Chem. Eur. J (2022), 28, e202200905.

106. V. Vinay Pradeep, and R. Chandrasekar*

"Micromanufacturing of geometrically- and dimensionally-precise molecular single-crystal photonic micro-resonators via focused ion beam milling"

arXiv:2203.14218v1 [physics.optics], Adv. Opt. Mater. (2022), 10, 2201150.


Indian Patent Application, Filed, TEMP/E-1/18625/2022-CHE.

104. M. Rohullah, V. Vinay Pradeep, J. Ravi, A. Vinod Kumar and R. Chandrasekar*

"Micromechanically-Powered Rolling Locomotion of Twisted-Crystal Optical-Waveguide-Cavity as a Mobile Light Polarization Rotor"

Angew. Chem. Int. Ed. (2022), 61, e202202114. DOI: 10.1002/anie.202202114. [HOT ARTICLE]

103.  R. Chandrasekar*

"Mechanophotonics - A guide to integrating microcrystals toward monolithic and hybrid all-organic photonic circuits"

Chem. Commun. (2022), 58, 3415-3428. [Invited Feature Article].

102. J. Ravi, A. Vinod Kumar, M. Annadhasan, R. Chandrasekar*

"Realization of Mechanically Maneuverable Circuit Ports in Organic Hybrid Photonic Chip for 360° Steering of Bandwidth Engineered Signals"

Adv. Opt. Mater. (2022), 10, 2102545.

101. M. Annadhasan, V. Vinay Pradeep, A. Vinod Kumar, J. Ravi, R. Chandrasekar*

"Integrating Triply- and Singly-Bent Highly Flexible Crystal Optical Waveguides for Organic Photonic Circuit with a Long-Pass-Filter Effect"

Small Structures (2022), 3, 2100163.


100. M. Godumala, A. Vinod Kumar, R. Chandrasekar*

"Room temperature phosphorescent organic materials for optical waveguides"

J. Mater. Chem. C  (2021), 9, 14115-14132 [Invited Review]

99. C. Tardío, V. Vinay Pradeep,* R. Martín, A. M. Rodríguez,  A. de la Hoz,   R. Jada,  M. Annadhasan,  P. Prieto*, R. Chandrasekar*

"Polarised optical emission from organic anisotropic microoptical waveguides grown by ambient pressure vapour-deposition"

Chem - An Asian J, (2021), 16, 3476-3480. [VIP Article]

98. J. Ravi, A. Vinod Kumar, D. Prasad Karothu, M. Annadhasan, P. Naumov,* R. Chandrasekar*

"Geometrically-Reconfigurable, Two Dimensional, All-Organic Photonic Integrated Circuits Made from Two Mechanically and Optically Dissimilar Crystals"

Adv. Funct. Mater. (2021), 31, 2105415.


97. A. Vinod Kumar, M. Rohullah, J. Ravi, M. Godumala, M. Annadhasan, R. Chandrasekar*

"Mechanophotonic aspects of a room temperature phosphorescent flexible organic microcrystal"

Crys. Engg. Comm. (2021), 23, 5774 - 5779. [Invited Article for a themed Issue on Mechanically Responsive Crystals]

96. J. Ravi, R. Chandrasekar*

"Micromechanical Fabrication of Resonator-Waveguides Integrated 4-Port Photonic Circuit from Flexible Organic Single-Crystals"

Adv. Optical. Mater. (2021), 9, 2100550.

95. R. Chandrasekar*

"Mechanophotonics – Mechanical Micromanipulation of Single-Crystals towards Organic Photonic Integrated Circuits (OPICs)"

Small (2021), 17, 2100277. [Invited Perspective]

94. J. Ravi, M. Annadhasan, A. Vinod Kumar, R. Chandrasekar* 

"Mechanically Reconfigurable Organic Photonic Integrated Circuits Made from Two Electronically Different Flexible Microcrystals"

Adv. Funct. Mater. (2021), 31, 2100642.

93. A. Vinod Kumar, M. Annadhasan, V. V. Pradeep, M. Jyothi, K. V. J. Jose,* R. Chandrasekar*

"Spatio-Temporal Growth Anomalies in Photo-Isomerisable Cyanostilbene-Based Crystals Triggered by Light"                                          J. Phys. Chem. C (2021), 125, 4909-4916.


92.  M. Annadhasan,  A. Vinod Kumar,  E. A. Mamonov, T. Murzina, R. Chandrasekar*

"Magnetic Field-Assisted Manipulation of Polymer Optical Microcavities"

Adv. Photonics Res. (2021), 2, 2000146. [Invited Article]

91. V. V. Pradeep, C. Tardío, I. T. -Moya, A. M. Rodrígue, A. Vinod Kumar, M. Annadhasan, A. de la Hoz,  P. Prieto,* R. Chandrasekar*

"Mechanical Processing of Naturally Bent Organic Crystalline Microoptical Waveguides and Junctions"                           

Small (2021), 17, 2006795. 



90. M. Annadhasan, A. Vinod Kumar, D. Venkatakrishnarao, E. A. Mamonov,  R. Chandrasekar*

"Mechanophotonics: Precise-Selection, assembly and disassembly of polymer optical microcavities via mechanical manipulation for spectral engineering" 

Nanoscale Advances (2020), 2, 5584-5590, (HOT Article)

[A novel "PHOTON MOLECULAR REACTIONS" concept has been introduced in this paper]


89.  M. Annadhasan, S. Basak, N. Chandrasekhar, R. Chandrasekar* 

"Next-Generation Organic Photonics: The Emergence of Flexible Crystal Optical Waveguides"

Adv. Opt. Mater. (2020), 8, 2000959. [INVITED REVIEW FOR HALL OF FAME]

88. M. Popov, N. Mitetelo, K. Zhdanova, J. Ravi, R. Chandrasekar, T. Murzina

"Laser Intensity-Dependent Nonlinear-Optical Effects in Organic WGM Cavity Microstructures" 

Opt. Lett, (2020), 45, 4622-4625.

87. M. Annadhasan, A. Agrawal, S. Bhunia, V. V. Pradeep, S. S. Zade,* C. M. Reddy,* R. Chandrasekar*

" Mechanophotonics: Flexible Single-Crystal Organic Waveguides and Circuits"

Angew. Chem. Int. Ed. (2020), 59, 13852-13858. [HOT ARTICLE; TOP 10%]

Chemistryviews news:

86. M. Annadhasan, D. P. Karothu, R. Chinnasamy, L. Catalano, E. Ahmed, S. Ghosh,* P.  Naumov,* R. Chandrasekar*

"Micromanipulation of Mechanically Compliant Organic Single-Crystal Optical Microwaveguides"

Angew. Chem. Int. Ed. (2020), 59, 13821-13830. 

85. V. Radhika, M. Annadhasan, J. Ravi, M. D. Durga Prasad, N. Mitetelo, K. Zhdanova, E. Mamonov,  K. Muellen,* T. V. Murzina,*  R. Chandrasekar*

"Multifunctional Chiral pi -Conjugated Polymer Microspheres: Production and Confinement of NLO signal, Detection of Circularly Polarized Light and Display of Laser-Triggered NLO Emission Shifts"

Adv. Opt. Mater. (2020), 8, 2000431. [Open Access]

84. R. Samanta, D. Kitagawa, A. Modal, M. Bhattacharya, M. Annadhasan,   S. Modal,  R. Chandrasekar, S. Kobatake,* C. M. Reddy*

"Mechanical actuation and Patterning of Rewritable Crystalline Monomer-polymer Heterostructures via Topochemical Polymerization in a  Dual Responsive Photochromic Organic Material"

ACS Appl. Mater. & Interfaces (2020), 12, 16856-16863.

83. M. Jyothi, M. Annadhasan,  V. V. Pradeep,  R. Chandrasekar*

Direct micro-scale monitoring of aggregation, its growth and diffusion via aggregation-induced emission.

Soft Matter (2020), 16, 2664-2668.

82. N. V Mitetelo,* M. E. Popov, E. A. Mamonov, A. I. Maydykovskiy, D. Venkatakrishnarao, J. Ravi, R. Chandrasekar and T. V. Murzina

"Chirality driven effects in multiphoton excited whispering gallery mode microresonators prepared by a self-assembly technique"

Laser Phys. Lett. (2020), 17, 036201.

81. V. V. Pradeep, N. Mitetelo, M. Annadhasan, M. Popov,  E. Mamonov,  T. V. Murzina*,  R. Chandrasekar*

"Ambient Pressure Sublimation Technique Provides Polymorph-Selective Perylene Non-Linear Optical Micro-Cavities" 

Adv. Opt. Mater. (2020), 8, 1901317.


80. V. V. Pradeep, M. Annadhasan, R. Chandrasekar*

"Vapour-Phase Epitaxial Growth of Dual-Colour-Emitting DCM/Perylene

Micro-Heterostructure Optical Waveguides" 

Chem. Asian. J. (2019), 14, 4577–4581. [Invited for CRSI Special Issue]

79. N. Mitetelo, D. Venkatakrishnarao, J. Ravi, M. Popov, E. Mamonov,   T. V. Murzina* and R. Chandrasekar*

"Chirality-Controlled Multi-Photon Luminescence and Second Harmonic Generation from Enantiomeric Organic Micro-Optical Waveguides"

Adv. Opt. Mater. (2019), 7, 1801775.

78. M. Annadhasan, U. Venkataramudu, N. V. Mitetelo, E. A. Mamonov,  C. Sahoo, S. R. Gopal Naraharisetty, T. V. Murzina, R. Chandrasekar* High Optical Energy Storage and Two-Photon Luminescence from Solution-Processed Perovskite-polystyrene Composite Microresonators

ACS Applied Energy Mater.  (2019), 2, 428-435.


77. I. A. Kolmychek, N.V. Mitetelo, K.D. Zhdanova, V.B. Novikov, E.A. Mamonov, M. Jyothi, D. Venkatakrishnarao, R. Chandrasekar and T.V. Murzina*. 

"Whispering gallery modes in the two-photon luminescence of organic microsphere"

 J of Phys.: Conference Series (2018), 1092 (1), 012059.

76. U. Venkataramudu, C. Sahoo, S. Leelashree, M. Venkatesh, D. Ganesh, S. R. G. Naraharisetty, A. Kumar Chaudhary, S. Srinath, R. Chandrasekar*

Terahertz Radiation and Second-Harmonic-Generation from a Single-Component Polar Organic Ferroelectric Crystal" 

J. Mater. Chem. C (2018), 6, 9330-9335. PDF

75. J. Ravi, D. Venkatakrishnarao, C. Sahoo, S. R. G. Naraharisetty, N. Mitetelo, A. A. Ezhov, E. Mamonov, T. Murzina,* and R. Chandrasekar*

"A Two-Photon Pumped Supramolecular Up-conversion Microresonator"

Chem. Nano. Mat. (2018), DOI: 10. 1002/cnma.201800196. [Invited for a Special Issue]

74. V. Radhika, D. Venkatakrishnarao, C. Sahoo, S. R. G. Naraharisetty, D. Narayana Rao, K. Muellen,* and R. Chandrasekar*

"Photonic Microresonators from Charge-Transfer in Polymer Particles - toward Enhanced and Tunable Two-Photon Emission"

ACS Appl. Mater. & Interfaces (2018), 10, 16723-16730.


73. D. Venkatakrishnarao, E. A. Mamonov, T. V. Murzina, R. Chandrasekar,*

"Advanced Organic and Polymer Whispering-Gallery-Mode Micro-Resonators for Enhanced Non-Linear Optical Light" 
Adv. Opt. Mater. (2018), 0, 0000. [Invited Progress  Report ].

72. U. Venkataramudu, S. Basak, M. A. Mohiddon, R. Chandrasekar*

"Hierarchical lithographic patterning of two abrupt spin cross-over Fe(II) complexes into micro-cross-stripes"

J. Chem. Sci. (2018),  Accepted. [Invited PAPER - MTIC special Issue]


71. E. A. Mamonov∗, A. I. Maydykovskiy1 , N. V. Mitetelo1 , D. Venkatakrishnarao, R. Chandrasekar, T. V. Murzina

"Whispering gallery modes in two-photon fluorescence from spherical DCM dye microresonators"

Laser Phys. Lett. (2018), 15, 035401.


70. D.Venkatakrishnarao, C. Sahoo, E. A. Mamonov, I. A. Kolmychek, A. I. Maydykovskiy, N. V. Mitetelo, V. B. Novikov, Sri Ram G. Naraharisetty, T. V. Murzina,*and R. Chandrasekar*

"Chiral organic photonics: self-assembled micro-resonators for enhanced circular dichroism effect in the non-linear optical signal"

J. Mater. Chem. C (2017),  5, 12349-12353.[ORIGINAL PAPER]


69. V. Mitetelo,  EA Mamonov, KD Zhaanova, VB Novikov, IA. Kolmychek, ME Popov, D. Venkatakrishnarao, YSLV Narayana, R. Chandrasekar,  and T V Murzina

"Quadrartic and cubic nonlinear-optical response of organic micro-structures"

AIP Conference Proceedings (2017), 1874, 040018.


68. D. Venkatakrishnarao, C. Sahoo, V. Radhika, M. Annadhasan, Sri Ram G. Naraharisetty and R. Chandrasekar*

"2D Arrangement of Polymer Micro-Sphere Photonic Cavities Doped with Novel N-Rich Carbon Quantum Dots Display ­­­­­Enhanced One- and Two-Photon Luminescence Driven by Optical Resonances" 

Adv. Opt. Mater. (2017), 5, 1700695.


67. U. Venkataramudu, M. Annadhasan, H. Maddali and R. Chandrasekar*

"Polymorphism and microcrystal shape dependent luminescence, optical waveguiding and resonator properties of coumarin – 153"

J. Mater. Chem. C (2017), 5, 7262-7269.


66. V. B. Novikov, E. A. Mamonov, I. A. Kolmychek, D. A. Kopylov, N. V. Mitetelo, D. Venkatakrishnarao, YSLV Narayana, R. Chandrasekar, and T. V. Murzina

"Nonlinear optical effects in organic microstructures"

Proc. SPIE 10228, Nonlinear Optics and Applications, (2017), 10228J. DOI. 10.1117/12.2265806.


65. E. A. Mamonov,  V. B. Novikov, N. V. Mitetelo, I. A. Kolmychek, A. I. Maydykovskiy, . Venkatakrishnarao,Y. S. L. V. Narayana, M. A. Mohaiddon, R. Chandrasekar, T. V. Murzina,*

Enhanced nonlinear optical effects in organic frustum-shaped microresonators*, (2017), 

Laser Phys. Lett. (2017), 14, 035403.


64. M. V. Rasna, U. V. Ramudu, R. Chandrasekar and S. Dhara* 

"Propelling and spinning of microsheets in nematic liquid crystals driven by ac electric field" 

Phys. Rev. E (2017), 95, 012710. 


63. D. Venkatakrishnarao,Y. S. L. V. Narayana, M. A. Mohaiddon,  E. A. Mamonov, I. A. Kolmychek, A. I. Maydykovskiy, N. V. Mitetelo, V. B. Novikov, T. V. Murzina,* and  R. Chandrasekar* 

"Two-Photon Luminescence and Second-Harmonic Generation in Organic Non-Linear Surface Comprised of Self-Assembled Frustum Shaped Organic Micro-Lasers"

Adv. Mater. (2017), 29, 1605260. [ORIGINAL PAPER] PDF


62. D. Venkatakrishnarao, M. A. Mohiddon and R. Chandrasekar* 

"The Photonic Side of Curcumin: Self-Assembly of Curcumin Derivatives into Microsphere Resonators Emitting Visible/Near-Infrared Light"

Adv. Opt. Mater. (2017), 5, 1600613-1600619. PDF Free Download



61. M. V. Rasna, K. P. Zuhail, U. Ramudu, R. Chandrasekar and Surajit Dhara,*

"Dynamics of electroorientation of birefringent microsheets in isotropic and nematic liquid crystals" 

Phys. Rev. E (2016), 94, 032701. PDF


60. R. Vattikunta, D. Venkatakrishnarao, M. A. Mohiddon and R. Chandrasekar*

"Self-assembly of push-pull type dye molecules into organic single crystalline flexible micro-ribbons and rigid micro-rods for Vis-NIR-range photonic cavity applications"

Chem.Phys.Chem. (2016). 17, 3435-3441. PDF

59. U. Venkataramudu, D. Venkatakrishnarao, N. Chandrasekhar, M. A. Mohiddon, and R. Chandrasekar*,

"Single-particle to single-particle transformation of an active type organic microtubular homo-structure photonic resonator into a passive type hetero-structure resonator"

Phys. Chem. Chem. Phys. (2016), 18, 15528-15533. [ORIGINAL PAPER]  PDF

58. YSLV Narayana, D. Venkatakrishnarao, M. A. Mohiddon, A. Biswas, N. Viswanathan and R. Chandrasekar* 

"Visible-Near Infrared Range Whispering-Gallery-Resonance from Photonic micro-Sphere Cavities Self-Assembled from a Blend of Polystyrene and Poly[4,7-bis(3-octylthiophene-2-yl)benzothiadiazole-co-2,6-bis(pyrazolyl)pyridine] Coordinated to Tb(acac)3."

ACS Appl. Mater. & Interfaces (2016), 8, 952-958. PDF

57. D. Venkatakrishnarao and  R. Chandrasekar* 

"Engineering the Self-assembly of DCM dye into Whispering-Gallery-Mode micro-Hemispheres and Fabry-Pèrot Type micro-Rods for Vis-NIR (600-875 nm) Range micro-Optical Cavities"

Adv. Opt. Mater. (2016), 4, 112-119. PDF    Free Download



56. M. V. Rasna, K. P. Zuhail, U. V. Ramudu, R. Chandrasekar, D. Jayashri and Surajit Dhara∗

"Orientation, interaction and laser assisted self-assembly of organic single-crystal micro-sheets in nematic liquid crystal"

Soft Mater (2015), 11, 7674-7679. PDF

55.  YSLV Narayana, M. Baumgarten, K. Muellen, and R. Chandrasekar*

 "Tuning the Solid State Emission of Thin Films/Micro-Spheres Obtained From Alternating Oligo(3-octylthiophenes) and 2,6-Bis(pyrazole)pyridine Copolymers  by Varying Conjugation Length and Eu+3/Tb+3 Metal Coordination.

Macromolecules (2015). 48, 4801-4812. PDF

54.   D. Venkatakrishnarao, M. A. Mohiddon, N. Chandrasekhar, and  R. Chandrasekar* 

Photonic Micro-Rods Composed of Photo-Switchable Molecules: Erasable Hetero structure Wave Guides for Tunable Optical Modulation"

Adv. Opt. Mater. (2015), 3, 1035-1040. PDF  Cover Story Free download


53.    S. Basak, A. M. Mohiddon,  M. Baumgarten, K. Muellen, and R. Chandrasekar*

"Hierarchical Multicolor Nano-Pixel Matrices Formed by Coordinating Luminescent Metal Ions to a Conjugated Poly(4'-Octyl-2',6'-Bispyrazoyl Pyridine) Film via Contact Printing"

Scientific Reports (NPG) (2015), 5, 8406; PDF. [ORIGINAL PAPER]

52.   U. Ramudu, N. Chandrasekhar, S. Basak, M. D. Prasad and R. Chandrasekar*

" Fabrication of High  Resolution 4,82-Type Archimedean Nano-Lattice Composed of Solution Processable Spin Cross-Over Fe(II) Metallo-Supramolecular Polymer"

Macromol. Rapid Commun. (2015), 36, 647-653. PDF


51. R. Chandrasekar*

Functional (photonic and magnetic) nano/micro scale polymer solids.

Abstracts of Papers of the American Chemical Society. (2014), 248. 1155

50.   A. K. Botcha, S. Basak, and R. Chandrasekar*

Lithographically oriented 1D nano-tape arrays composed of solution processable above room temperature spin cross-over iron(II) coordination polymers" 

RSC Advances, (2014), 4, 34760. PDF

49.   A. K. Botcha, B. Dulla, E. R. Reddy, K. S. Chennubhotla, P. Kulkarni, R. Chandrasekar* and M. S. Rajadurai*,

Organic  Nano-Vesicular Cargoes for Sustained Drug Delivery: Synthesis, Vesicle Formation, Controlling “Pearling” States and  Terfenadine Loading/Release Studies" 

 J. of Nanotechnolgy, (2014), 2014, ID 369139. PDF


48.  R. Chandrasekar*

"Organic Photonics: Prospective synthetic nano/micro scale passive organic optical wave 

guides from conjugated molecules"       

Phys. Chem. Chem. Phys. (2014), 16, 7173-7183. [Invited Perspective Article] PDF


47.   N. Chandrasekhar, R. Reddy, M. D. Prasad, M. S. Rajadurai*, R. Chandrasekar* 

" Passive optical wave guiding nano/micro scale tubular pharmaceutical solids and Raman spectroscopy/mapping of defects"   PDF    

Cryst. Eng. Comm. (2014), 16, 4696-4700. [Invited Article- India Themed Issue- International Year of Crystallography] [ORIGINAL PAPER]


In the RSC News: Organic waveguide materials made from caffeine              


46.    N. Chandrasekhar, S. Basak, M. A. Mohiddon,and R. Chandrasekar*

 "Planar Active Organic Waveguide and Wavelength Filter: Self-Assembled meso-tetratolylporphyrin Hexagonal Nano-Sheet"  

ACS Appl. Mater. & Interfaces (2014), 6, pp 1488–1494. PDF


45.    S. Basak and R. Chandrasekar*

"Passive optical wave guiding organic rectangular tubes: Tube cutting, controlling       light propagation distance and multiple optical out-puts"       

J. Mater. Chem. C (2014), 2, 1404-1408. [ORIGINAL PAPER] PDF



44.    S. Basak, A. K. Botcha, Md. T. Ansari, and R. Chandrasekar*

"Optical Waveguiding Organic Nano-Rods Coated with Reversibly Switchable Fe(II) Spin Transition Nanoparticles"       

Indian J Mater. Science. (2013), vol. 2013, Article ID 136178..



43.    S. Basak, P. Hui, and R. Chandrasekar*

 Flexible and Optically Transparent Nano/Micro Scale Spin Cross-Over Fe(II) Complex Patterns/Arrays"

Chem. Mater. (2013), 25, 3408-3413. PDF

42.   YSLV Narayana, S. Basak, M. Baumgarten, K. Muellen, and R. Chandrasekar*

 "White - Emitting  Polymer/Inorganic  Hybrid Spheres: Phenylethynyl and 2,6-Bis(pyrazolyl)pyridine Copolymer Coordinated to  Eu(tta)3" 

Adv. Funct. Mater. (2013), 23, 5875-5880.  PDF [ORIGINAL PAPER]

41.   N. Chandrasekhar, M. A. Mohiddon and R. Chandrasekar*

 Organic Submicro Tubular Wave Guides: Self- Assembly, Diverse Geometries, Efficiency and Remote Sensing Properties"  

Adv. Opt. Mater. (2013),1, 305-311. PDF   [ORIGINAL PAPER]  Free Download

40.    P. Hui and R. Chandrasekar*

"Light Propagation in High-Spin Organic Microtubes Self-Assembled from Shape Persistant Macrocycles Carrying Oxo-Verdazyl Biradicals"

 Adv. Mater. (2013), 25, 2963. PDF  [ORIGINAL PAPER]

39.    S. Basak, YSLV Narayana, M. Baumgarten, K. Muellen, and R. Chandrasekar*

 "White Light Emitting Films from Eu(III) Complexed Copolymers of alternating Fluorene and Bispyrazolylpyridine derivatives"

Macromolecules. (2013), 46, 362-369. PDF [ORIGINAL PAPER]


38.    P. Hui, and R. Chandrasekar*

 "Shape-Defined and Shape-Shifting Paramagnetic Organic Nano-/Micro-Structures Derived from Doublet State Nitronyl Nitroxide Radical"

 Chem. Plus. Chem. (2012), 12, 1051. PDF COVER PICTURE ARTICLE

37.   S. Basak, P. Hui, S. Boodida and R. Chandrasekar*

 "Micro-Patterning of Metallo-Polymers: Syntheses of Back-to-back Coupled Octylated 2,6-Bis(pyrazolyl)pyridines Ligands and their Solution Processable Coordination Polymers"

J. Org. Chem., (2012), 77, 3620-3626. [ORIGINAL PAPER]  PDF  


36.    P. Hui, Khaja. Md. Arif, and R. Chandrasekar*

 "Syntheses, Optical and Intramolecular Magnetic Properties of Mono- and Di-Radicals Based on Nitronyl Nitroxide and Oxoverdazyl Groups Appended to 2,6-Bispyrazolylpyridine Core"

Org. Biomol. Chem. (2012), 10, 2439-2446. (Invited) PDF

35.    N. Chandrasekhar and R. Chandrasekar*

"Reversibly Shape-Switching Organic Optical Wave Guides: Formation of  Nano-Rings, Nano-Tubes, and Nano-Sheets"

Angew. Chem. Int. Ed. (2012), 51, 3556-3561. PDF   FRONTISPIECE COVER COMMN.


34.   YSLV. Narayana and R. Chandrasekar*

 "Triple-emission from organic/inorganic hybrid nanovesicles in a single excitation"

 Chem.Phys.Chem. (2011),12, 2391-2396.PDF

33.   S. Basak and R. Chandrasekar*

“Multi-Luminescent Organic/Inorganic Hybrid Nanotubes: One-Pot Fabrication of Tricolor (Blue-Red-Purple) Luminescent Rectangular Organic Nanotubes Grafted with Eu(III) Complexes"

 Adv. Funct. Mater. (2011), 21, 667-673.  PDF  


32.    N. Chandrasekhar and R. Chandrasekar*

“Super hybrid tridentate ligand derivatives” : (4-substituted-2-(1-butyl-1H-1,2,3-triazol-4-yl)-6-(1H-pyrazol-1-yl)pyridine) coordinated to Fe(II) ions display above room temperature  spin transitions"

Dalton Trans., (2010), 39, 9872-9878. PDF 

31.   N. Chandrasekhar and R. Chandrasekar*

“Click-Fluors”: Synthesis of a Family of p-Conjugated Fluorescent back-to-back Coupled 2,6-Bis(triazol-1-yl) pyridines and their Self-Assembly Studies,

 J. Org. Chem., (2010), 75, 4852-4855. PDF

30.   N. Chandrasekhar and R. Chandrasekar*

"Engineering Self-Assembled Fluorescent Organic Nanotapes and Submicrotubes from Pi-Conjugated Molecules" 

 Chem. Commun., (2010), 46, 2915-2917. PDF  

 TOP 10 MOST ACCESSED ARTICLE IN APRIL 2010"  Ranked No. 3.     

 **Highlighted in Nachrichten aus der Chemie (Trends in Chemistry), 2011, 59(3), 254.

 DOI: 10.1002/nadc.201176371   as one of the inspiring work and recent trends in organic chemistry. 



 29.  S. Basak, P. Hui and R. Chandrasekar*

“Regio-Selective Synthesis of Brominated and Iodinated 2’,6’-Bispyrazolyl  Pyridine  Units”

 Synthesis, (2009), 23, 4042-4028.




Other Publications & Patents (PhD and Post-Doc) :


28.  D. Hötger, P. Carro, R. Gutzler, . Wurster, R. Chandrasekar, S. Klyatskaya, M. Ruben, R. C Salvarezza, K. Kern, D. Grumelli,

Phys,. Chem. Chem. Phys. (2018), 20, 15960.


27.  L Zhang, A Bagrets, D Xenioti, R Korytar, M Schackert, T Miyamachi, F Schramm, O Fuhr, R Chandrasekar, M Alouani, M Ruben, W Wulfhekel, F Evers, "Kondo effect in binuclear metal-organic complexes with weakly interacting spins"

Phys. Rev. B, (2015). PDF



26.  S. Wagner, F. Kisslinger, S. Ballmann, F. Schramm, R. Chandrasekar, T. Bodenstein, O. Fuhr, D. Secker, K. Fink, M. Ruben, and H. B. Weber,  Switching of a Coupled Spin Pair in Single-Molecule Junctions,

Nature Nanotechnology, (2013), 3, 575-579. PDF 



25.  A. Langner, S. L. Tait*, N. Lin, R. Chandrasekar, V. Meded, K. Fink, M. Ruben*, and K. Kern*
"Selective Coordination Read-out in Surface-confined Metallo-supramolecular Systems," 
Angew. Chem. Int. Ed. (2012), 51, 4327-4331.PDF 


24.    R. Gonzalez-Prieto, B. Fleury, F. Schramm, G. Zoppellaro, R. Chandrasekar, O.Fuhr, S.Lebedkin, M. Kappes and Mario Ruben* "Tuning the spin-transition properties of pyrene-decorated 2,6-bispyrazolylpyridine based Fe(II)  complexes" 

 Dalton Trans., (2011), 40, 7564-7570.PDF 


23.   V. Meded, A. Bagrets, K. Fink, R. Chandrasekhar, M. Ruben, F. Evers,"Electrical control over the Fe(II) spin cross-over in a single molecule: Theory and Experiment "        

 Phys. Rev. B. (2011), 83, 245415.PDF 


22.    I. Salitros, J. Pavlik, R. Boca, O. Fuhr, R. Chandrasekar and M. Ruben, "Supramolecular lattice-solvent   control of iron(II) spin transition parameters"

Cryst.Eng.Commun. (2010), 12, 2361-2368.

 [Themed Special Issue entitled "New Talent"] PDF


21.   Langner, S. L. Tait, N. Lin, R. Chandrasekar, M. Ruben, K. Kern, "Two- to One-Dimensional Structural Transformation of Self-Assembled Coordination Networks at Surface by Ligand Addition"

 Chem. Commun. (2009), 2502-2504.PDF


20. F. Schramm, R. Chandrasekar, T. Zevaco, M. Rudoph, H. Gorls, W. Poppitz, M. Ruben*, "Polypyridyl)ruthenium(II) Complexes Based on a Back-to-Back Bis(pyrazolylpyridine) Bridging Ligand"  

 Eur. J. Inorg. Chem., (2009), 53-63. PDF


19. Chandrasekar Rajadurai, Mario Ruben, Danuta Kruk, - "The Use of Iron(II) Containing Spin Crossover Complex as a MRI Contrast Agent ” – 

 International Patent Application, WO2009/080138A2. Published on : 02/07/2009


18.   Chandrasekar Rajadurai, Mario Ruben - "Preparation of 2' , 6' -di-pyrazolyl-pyridine containing a reactiv group R in 4' position ” 

 European Patent ApplicationEP 2 053 049 B1, Granted. on 21.12.2011.


17. Chandrasekar Rajadurai, Mario Ruben, Danuta Kruk, - "The Use of Iron(II) Containing Spin CrossoverComplex as a MRI Contrast Agent ”

 European Patent ApplicationEP 207206 2,  Granted.


16. S. L. Tait, A. Langner, N. Lin, R. Chandrasekar, M. Ruben, K. Kern, “Assembling Isostructural Metal-Organic Coordination Architectures On Cu (100), Ag(100) and Ag(111) Substrates,”  

 Chem.Phys.Chem. (2008), 9, 2495-2499. **Cover Picture  Article  PDF



15.    M. Cavallini, I. Bergenti, S. Milita, G. Ruani, Z. R. Qu, R. Chandrasekar, M. Ruben, "Micro- and Nanopatterning of a SpinTransition Compound into Logical Structures"** 

 Angew.Chem. Int. Edn. (2008), 47, 8596-8600.  **HOT Article PDF


14.    A. Langner, S. L. Tait, N. Lin, R. Chandrasekar, M. Ruben, K.  Kern,"Ordering and Stabilization of Metal-Organic Coordination Chains by Cooperative Assembly with a Hydrogen Bonding Species at a Surface"**    

Angew. Chem. Int. Edn. (2008),47, 8835-8838.  **Cover Picture  Article PDF


13.     R. Chandrasekar, F. Shramm, O. Fuhr, M. Ruben,* "An Iron(II) Spin Transition Compound with Thiol Anchoring Groups"** 

Eur. J. Inorg. Chem., (2008), 4860- 4862.   **Cover Picture Article*  PDF



12.    A. Langner, S. L. Tait,* Chandrasekar Rajadurai, N. Lin, M. Ruben,* K. Kern, “Self-Recognition and Self- Selection in Multi-Component Supramolecular Coordination Networks on Surfaces”

 Proc. Natl. Acad. Sci. U.S.A. (2007), 104, 17927–17930.

 *News: “Evolution in the Nanoworld” – PNAS USA work was highlighted by the Max-Planck Society Press  Release, October 30, 2007. PDF


11.    N. Lin,* A. Langner, S. L. Tait, Chandrasekar Rajadurai, M. Ruben, K. Kern,* “Template-directed  supramolecular self-assembly of coordination dumbbells at surfaces”

Chem. Commun. (2007), 4860–4862.  PDF   


10. Steven L. Tait,* Alexander Langner, Nian Lin, Sebastian Stepanow, Chandrasekar Rajadurai, Mario Ruben,*Klaus Kern, “One-Dimensional Self-Assembled Molecular Chains on Cu(100): Interplay between surface-assisted coordination chemistry and substrate commensurability”, 

 J. Phys. Chem. C, (2007), 111, 10982–10987.  PDF


09.Chandrasekar Rajadurai, Z. Qu, O. Fuhr, B. Gopalan, R. Kruk, M. Ghafari, M. Ruben*, “Lattice-SolventControlled Spin Transitions in Iron(II) Complexes”

 Dalton Trans. (2007), 3531–3537. PDF


08.   Chandrasekar Rajadurai, Olaf Fuhr, Robert Kruk, Mohammed Ghafari, Horst Hahn, Mario Ruben*,“Above Room Temperature Spin Transition in a Metallo-supramolecular Coordination Oligomer/Polymer”,

 Chem. Commun. (2007), 2636–2638. PDF


07. Chandrasekar Rajadurai, Volker Enkelmann, Giorgio Zoppellaro, Martin Baumgarten*,“Magnetic Interactionsin Supramolecular(-C≡CH···O-) Type H-Bonded Nitronylnitroxide Radical Polymer Chains”,

 J. Phys. Chem. B, (2007), 111, 4327–4334.PDF


06 Chandrasekar Rajadurai,* Olaf Fuhr, Volker Enkelmann, Martin Baumgarten*, “A Supramolecular Network of 2-(4,4,5,5-tetramethyl-3-oxylimidazoline-1-oxide)-5-bromopyridine Built through π-π Stacking and H bonding Interactions“,

 J. Phys. Org. Chem. (2006), 19, 257–262.   PDF


05. Chandrasekar Rajadurai, V. Enkelmann, V. Ikorskii, V. Ovcharenko*, M. Baumgarten*, “Metal-Biradical Clusters in a Single Chain  from a High-Spin Ligand and Bis(hexafluroacetylacetonato)copper(II)”,

 Inorg. Chem. (2006), 45, 9664–9669. PDF


04.   Chandrasekar Rajadurai, Frank Schramm, Susan Brink, Olaf Fuhr, Robert Kruk, Mohammed Ghafari, Mario Ruben*, “Spin Transition in a Chainlike Supramolecular Iron(II) Complex”,

Inorg. Chem. (2006), 45, 10019–10021. 


03. Chandrasekar Rajadurai,* K. Falk, S. Ostrovsky, V. Enkelmann, W. Haase, M. Baumgarten*, “1- D Coordination chains of Cu(hfac)2 and Mn(hfac)2 bridged by phenyl nitronyl nitroxide derivatives”,

 Inorg. Chim. Acta., (2005), 358, 3391–3397.


02.   Chandrasekar Rajadurai,* S. Ostrovsky, K. Falk, V. Enkelmann, W. Haase, M. Baumgarten,* “Synthesis,crystal structure and magnetism of centrosymmetric trinuclear copper(II) complex of  pyridine nitronyl nitroxide  derivative”,

Inorg. Chim.  Acta., (2004), 357, 581–587.


01.  Chandrasekar Rajadurai, A. Ivanova, V. Enkelmann, M. Baumgarten,* “Study On the Heteroatom Influence in Pyridine -Based Nitronyl Nitroxides Biradicals with Phenylethynyl Spacers on the Molecular Ground State”,

J. Org. Chem., (2003), 68, 9907–9915.  

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