FleXtal Lab

"One should be able to relate every physical property of a crystal to its underlying structure, if the structure-property correlation is established by carefully investigating each and every small structural factor,
i.e. strength, spatial distribution and nature of interactions. The FleXtal Lab's motivation is to make mechanical behavior of organic single crystals predictable and designable by using Crystal Engineering approach."

Image of CMReddy

Chilla Malla Reddy

Professor, Department of Chemical Sciences
Indian Institute of Science Education and Research Kolkata
E-mail: cmreddy@iiserkol.ac.in
E-mail: cmallareddy@gmail.com
Dr. C Malla Reddy did his Ph.D. in Supramolecular Chemistry & Crystal engineering from the University of Hyderabad in 2006. There after he continued his research as a post-doctoral fellow at Karlsruhe Institute of Technology, Germany, 2007-2008. Immediately he moved to Indian Institute of Science Education and Research (IISER) Kolkata as an assistant professor in department of chemical sciences. In 2014 he has been promoted to associate professor. Then In 2019 he has been promoted to professor. For the Year 2014-2015, he has been awarded with prestigious Swarna Jayanti fellowship by Department of science and technology, Government of India.
Research Areas: Crystal Engineering & Supramolecular Chemistry, Self-healing Crystals, Flexible Functional Materials, Solid-State Pharmaceutical Chemistry (Tabletability), Structure-Mechanical Property Relationship.


  • Associate Editor, CrystEngComm. (link)
  • Prestigious Swarna Jayanti Fellowship Award for the 2014-2015 by Department of science and technology, India.
  • " The Distinguished Lectureship Award " by the Chemical Society of Japan, March 2017.
  • Co-editor for Acta Crystallographica Section B. (link)
  • Advisory Board Member for CrystEngComm journal published by Royal Society of Chemistry.
  • Associate Editor, RSC Advances (2015-2016).

Latest Work: Actuation in self-healing crystals

selected publications

  • S. Bhunia, S. Chandel, S. K. Karan, S. Dey, A. Tiwari, S. Das, N. Kumar, R. Chowdhury, S. Mondal, I. Ghosh, A. Mondal, B. B. Khatua, N. Ghosh*, C. M. Reddy* ; Autonomous self-repair in piezoelectric molecular crystals; Science, 2021: Vol. 373, Issue 6552.
  • K. Dey, S. Bhunia, H. Sashmal, C. M. Reddy*, R Banerjee* ;Self-assembly Driven Nano-mechanics in Porous Covalent Organic Framework Thin Films;
    J. Am. Chem. Soc. 2021, 143 (2), 955-963
  • S Das, A. Mondal, C. M. Reddy*;Harnessing molecular rotations in plastic crystals:a holistic view for crystal engineering of adaptive soft materials; Chem. Soc. Rev. 2020, DOI: 10.1039/d0cs00475h
  • B. Bhattachary, D. Roy , S. Dey, A. Puthuv akkal, S. Bhunia, S. Mondal, R. Chowdhury , Dr. M. Bhattachary a, M. Mandal, Dr. K. Manoj* P. K. Mandal* and C. M. Reddy*; ; Mechanical bending induced fluorescence enhancement in plastically flexible crystals of a GFP chromophore analogue;
    Angew. Chem. Int. Ed. 2020, 59, 1 – 7
  • M Annadhasan, A R. Agrawal, S Bhunia, V V Pradeep, S S. Zade*, C M Reddy* and R Chandrasekar*; ; Mechanophotonics: Flexible Single-Crystal Organic Waveguides and Circuits; Angew. Chem. Int. Ed. 2020, 59,2–9 Hot Article
  • A Mondal, B Bhattacharya, S Das, S Bhunia, R Chowdhury, S Dey, C. Malla Reddy*; Metal‐like ductility in organic plastic crystals: Role of molecular shape and dihydrogen bonding interactions in aminoboranes; Angew. Chem. Int. Ed. 2020, 59, 2-12
  • R Samanta, S Ghosh, R Devarapalli, CM Reddy*; Visible Light Mediated Photopolymerization in Single Crystals: Photomechanical Bending and Thermomechanical Unbending; Chem. Mater., 2018, 30 (3), 577–581.
  • Krishna, G. R., Devarapalli, R., Lal, G., Reddy, C. M. Reddy,* Mechanically Flexible Organic Crystals Achieved by Introducing Weak Interactions in Structure: Supramolecular Shape Synthons; J. Am. Chem. Soc., 2016, 138, 13561–13567. (Front Cover Illustration)
  • Panda, M. K., Ghosh, S., Yasuda, N., Moriwaki, T., Mukherjee, G. D., Reddy, C. M.,* Naumov, P.,*; Spatially resolved analysis of short-range structure perturbations in a plastically bent molecular crystal; Nature Chem. 2015, 7, 65-72.
  • Sahoo, S. C., Sinha, S. B., Kiran, M. S. R. N., Ramamurty, U., Dericioglu, A. F., Reddy, C. M.,* Naumov, P.* Kinematic and Mechanical Profile of the Self-actuation of Thermosalient Crystal Twins of 1,2,4,5-tetrabromobenzene: A Molecular Crystalline Analogue of a Bimetallic Strip;
    J. Am. Chem. Soc. 2013, 135, 13843-13850.
  • GR Krishna, MSRN Kiran, CL Fraser, U Ramamurty, CM Reddy; The Relationship of Solid-State Plasticity to Mechanochromic Luminescence in Difluoroboron Avobenzone Polymorphs; Adv. Funct. Mater. 2013, 23 (11), 1422-1430. (Front Cover Illustration)
  • S Ghosh, CM Reddy; Elastic and Bendable Caffeine Cocrystals: Implications for the Design of Flexible Organic Materials;
    Angew. Chem. Int. Ed. 2012, 124 (41), 10465-10469.
  • --------------------------for more--------------------------

our team


contact us

Department of Chemical Sciences, TRC-326
Teaching and Research Complex, IISER Kolkata Main Building, Mohanpur 741246 Nadia, WB, India.
E-mail: cmreddy@iiserkol.ac.in
E-mail: cmallareddy@gmail.com