Chilla Malla Reddy


  • Department of Chemical Science
  • Indian Institute of Science Education
  • and Research Kolkata
  • EMAIL:cmreddy@iiserkol.ac.in
  • Phone: +91-33-25873119

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."

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, Goverment of India.

Research Areas: • Crystal Engineering & Supramolecular Chemistry • Design of Flexible Organic Functional Materials • Solid-State Pharmaceutical Chemistry (Tabletability) • Structure-Mechanical Property Relationship

Research Interests
The focus of our research group is to design the properties of organic materials by establish a reliable structure-property correlationship. Our current major projects include (i) the understanding of structure-mechanical property relationship in flexible organic crystals (ii) design of new solid forms of active pharmaceutical ingredients (APIs) with improved mechanical behaviour and tabletability, (iii) establishing design principles for efficient mechanochromic luminescent solid state fluorophores. The general characterization techniques we use include nanoindentation, hot-stage microscopy, Raman spectroscopy, powder and single crystal x-ray diffraction, TGA, DSC, SEM, TEM etc.

Awards and Honors:

  • 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)
  • Performance Based Incentive Award for 2014-2015 by IISER Kolkata.
  • Advisory Board Member for CrystEngComm journal published by Royal Society of Chemistry.
  • Associate Editor, RSC Advances (2015-2016).

Some Selected Publications:

  1. 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, Accepted article, doi: 10.1021/jacs.0c11122
  2. 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
  3. 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
  4. 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;
    Angewandte Chemie 2020, 59,2–9 Hot Article
  5. 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;
    Angewandte Chemie. 2020, 59, 2-12
  6. S Dey* ,S Das, S Bhunia, R Chowdhury, A Mondal, B Bhattacharya, R Devarapalli, N Yasuda, T Moriwaki, K Mandal, G D Mukherjee, C. Malla Reddy*;Mechanically interlocked architecture aids an ultrastiff and ultra-hard elastically bendable cocrystal;
    Nat Commun. 2019, 3711(10).
  7. 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.
  8. 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)
  9. 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.
  10. 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.
  11. GR Krishna, MSRN Kiran, CL Fraser, U Ramamurty, CM Reddy; The Relationship of Solid-State Plasticity to Mechanochromic Luminescence in Difluoroboron Avobenzone Polymorphs;
    Advanced Functional Materials (2013) 23 (11), 1422-1430. (Front Cover Illustration)
  12. S Ghosh, CM Reddy; Elastic and Bendable Caffeine Cocrystals: Implications for the Design of Flexible Organic Materials;
    Angewandte Chemie (2012) 124 (41), 10465-10469.
    for more..

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