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Dr. Soumyajit Ghosh

M.Sc., Ph.D

Research Assistant Professor

Dr. Soumyajit Ghosh is working as Research Assistant Professor in Department of Chemistry since October 2016. He did his MSc in chemistry from IIT Delhi in year 2006 and PhD in organic crystal engineering from IISER Kolkata in year 2013 under the supervision of Professor C. Malla Reddy. Title of his PhD thesis was “Mechanical and some other Physico-Chemical Properties of Pharmaceutical Co-crystals: A Crystal Engineering Approach”. After that he pursued his postdoctoral career as DST Young Scientist under Professor Gautam Desiraju, IISc Bangalore. Before joining SRM university he worked as Assistant Manager, Mylan Laboratories Hyderabad. His current research interests are organic crystal engineering, structure-property correlation in molecular crystals, mechanically responsive molecular crystals, pharmaceutical co-crystals and their physico-chemical properties.

Indian Institute of Science Education and Research Kolkata as a PhD student 

  • Structure-property correlation in a series of pharmaceutical co-crystals
  • Co-crystals were designed by crystal engineering approach and characterized by NMR, IR, single crystal XRD, powder XRD, Raman spectroscopy etc.
  • Study of flexible organic crystals. Reported first elastic bendable caffeine co-crystals.
  • Polymorphism was also investigated in few co-crystals and phase transition was explained in the light of theoretical and nanoindentation study.
  •  A series of co-crystals of sulfamethazine and fenamic acids were synthesized in order to achieve better solubility and dissolution properties.

Indian Institute of Science, Bangalore as DST Young Scientist 

  • Designing elastic organic crystals: Highly flexible polyhalogenated N-benzylidineanilines.
  • Design of pharmaceutical co-crystals and study of its physico-chemical properties.
  • Study of structure-property correlation in thermosalient and photosalient organic crystals.

Mylan Laboratories R&D Center, Bollaram, Hyderabad as Assistant Manager 

Understanding the scope and strategy of polymorph screening project, study of literature such as patents, research articles etc.

Determination of solubility, design of various screening methodologies and execution of crystallization experiments on High-Throughput Screening (HTS) platform. Reproducing novel polymorphs manually.

Identifying various crystallization processes for novel forms. 

Papers Presented in Conferences and Schools

  • Poster: Soumyajit Ghosh, AbhisekBasu, Goutam Dev Mukherjee and C. Malla Reddy, “Study of Deformed Organic Crystals by Raman Spectroscopy” at 2nd Inter IISER Chemistry Meet held at IISER Kolkata, 30-31st December, 2009.
  • Poster: Soumyajit Ghosh, AbhisekBasu, Goutam Dev Mukherjee and C. Malla Reddy, “Study of Deformed Organic Crystals by Raman Spectroscopy” at 1st Gordon Research Conference on Crystal Engineering 6-11th June, 2010 NH, USA.
  • Poster: Soumyajit Ghosh, ParthaPratim Bag and C. Malla Reddy, “Co-crystals of Sulfamethazine with some Carboxylic Acids and Amides: Co-Former Assisted Tautomerism in API and Hydrogen Bond Competition Study” at XX International Conference on the Chemistry of the Organic Solid State held at IISc Bangalore 26-30th June 2011.
  • Talk: Soumyajit Ghosh, “Bending Molecular Crystals:Raman and HRTEM study” 1st DCS in-house Symposium held at IISER Kolkata 30-31st December 2010.
  • Poster: Soumyajit Ghosh, ParthaPratim Bag and C. Malla Reddy, “Co-crystals of Sulfamethazine with some Carboxylic Acids and Amides: Co-Former Assisted Tautomerism in API and Hydrogen Bond Competition Study” at Indo-US Bilateral Meeting on The evolving role of solid state Chemistry in Pharmaceutical Science held at Heritage Village Resort & Spa, Manesar (near Gurgaon) 2-4th February 2012.
  • Poster: Soumyajit Ghosh and C. Malla Reddy, “Flexible and Elastically Bendable Caffeine Co-crystals” at Current Trends in Chemistry (Tenth Symposium of CRSI Kolkata Chapter) held at IISER Kolkata 8th August 2012.
  • Poster: Soumyajit Ghosh, Arobendo Mandal, M. S. R. N. Kiran, U. Ramamurty and C. Malla Reddy, “The Role of Weak Interactions in the Phase Transition and Distinct Mechanical Behavior of Two Structurally Similar Caffeine Co-crystal Polymorphs Studied by Nanoindentation” at 2nd Department Day 2013, Department of Chemical Sciences held at IISER Kolkata 11th December, 2013.
  • Attended Mini Symposium on “Designer Molecular Crystals: Mechanical and Functional Properties” at SSCU,IISc Bangalore, 14th November, 2014.
  • Attended International Conference on Structural Chemistry of Molecules and Materials (SCOMM) at Center for Research in Nanoscience & Nanotechnology (CRNN) Kolkata, 30th November-2nd December, 2014.
  • Attended 3rd China-India-singapore (CIS) Conference on Crystal Engineering at SSCU,IISc Bangalore, 8th-10th December 2014.
  • Poster: Design of elastically bendable molecular crystals: Implications for smart hybrid actuators ICRAMC 2017, SRMIST, Kattankulathur.
  • Talk: Design of elastically bendable molecular crystals: Implications for smart actuators.IUCr 2017, Hyderabad, 21st-28th August, 2017.
  • Talk: Molecular Crystals in Motion: Implications for Smart Actuators. Discussion Meeting on Mechanical Properties of Molecular Crystals, Coorg, 26th-29th November, 2017.
  • Attended ICRAMC 2018, SRMIST, Kattankulathur.
  • Attended ICRAMC 2019, SRMIST, Kattankulathur.
  •  Invited Talk: “Design of Elastically Bendable Molecular Crystals: Implications for Smart Actuators” Workshop on “Emerging Trends in Main Group Chemistry” Leibniz Workshop Department of Chemistry, IIT Madras 26th August 2019.
  • Attended 2nd International Conference on Crystal Engineering: From Molecule to Crystal, a Virtual Meeting, 19 – 20 June 2020.

Awards and Fellowships 

  • Qualified All India Joint admission Test to MSc, IIT JAM 2004 (All India Rank 99).
  • Awarded Senior Research Fellowship by CSIR, Government of India. (July 2011-December 2013).
  • Awarded Junior Research Fellowship by CSIR, Government of India. (July 2009-June 2011).
  • Qualified Graduate Aptitude Test in Engineering (GATE) 2009, 99.03 percentile (All India Rank 63).
  • Best Oral Presentation award at 1st DCS in-house Symposium held at IISER Kolkata 30-31st December 2010.  
  • Recipient of International Travel Grant from Dept. Of Science & Technology (DST), Govt. Of India for attending 1st Gordon Research Conference on Crystal Engineering 6-11th June, 2010 NH, USA.  
  • DST Young Scientist Award 2014.
  • DS Kothari Postdoctoral Fellowship 2014.
  • DST Bursary Support to attend IUCr 2017 held in Hyderabad. 21st-28th August.
  • Travel Support from SRMIST to attend IUCr 2017 held in Hyderabad. 21st-28th August.
  • Early Career Research Award, Project funded by DST-SERB.



  • Design of mechanically flexible organic crystals
  • Design of thermosalient, photosalient crystals and other mechanically responsive crystals
  • Understanding of mechanical anisotropy and phase change by nanoindentation probe
  • Design of ternary co-crystals
  • Growing single crystals by halogen bonding
  • Development of pharmaceutical co-crystals and understanding various physico-chemical properties.

Some of current research results:


Flexible optoelectronic systems which are based on conversion of energy into mechanical motion require fast response times. Materials which show mechanical motion under the influence of different external stimuli such as pressure, heat or light hold promise as self-actuating devices. There are limitations in the response times of polymer based actuating materials and the search for quick response organic materials is gaining momentum. Here, an elastic organic crystal, 2,6-dichlorobenzylidine-4-fluoro-3 nitroaniline (DFNA), which also shows thermosalientbehavior, is studied. The presence of these two distinct properties in the same crystal is unprecedented. The two properties, namely elastic bending and crystal splitting (thermosalient) are attributed to the inherent crystal packing while the mechanisms for bending and thermosalience are quite independent of one another (J. Am. Chem. Soc., 2015, 137, 9912-9921). 



Crystalline materials are notoriously brittle, and this is particularly true for organic crystals. Although metal–organic frameworks, which are held together by coordination bonds, can display structural flexibility — such as a 'breathing' behaviour that allows for their lattices expansion and compression — organic crystals rely on weaker non-covalent interactions and are easily broken. Only a handful of flexible organic crystals have been described and in those cases, the irreversible bending arises from the concerted movements of molecular sheets.Herein we report a remarkablyflexible, elastically bendable cocrystal solvate formed fromcaffeine (CAF), 4-chloro-3-nitrobenzoic acid (CNB), and methanol in a 1:1:<1 ratio. The cocrystal solvate1 retains a high internal order through an efficient stressdissipation mechanism, and hence is important in the context of crystal engineering and for the design of flexible organicmaterials (Angew. Chem. Int. Ed., 2012, 51, 10319-10323).




Elastic organic crystals may be designed by selecting molecules that are likely to adopt isotropic packing with weak and only moderately polar interactions. The restorative ability of halogen bonds upon application of stress is particularly relevant in this context and is used in this family of Schiff bases (Angew. Chem. Int. Ed., 2015, 54, 2674-2678).






The exceptional mechanical flexibility observed with certain organic crystals defies the common perception of single crystals as brittle objects. Here, we describe the morphostructural consequences of plastic deformation in crystals of hexachlorobenzene that can be bent mechanically at multiple locations to 360° with retention of macroscopic integrity. This extraordinary plasticity proceeds by segregation of the bent section into flexible layers that slide on top of each other, thereby generating domains with slightly different lattice orientations. Microscopic, spectroscopic and diffraction analyses of the bent crystal showed that the preservation of crystal integrity when stress is applied on the (001) face requires sliding of layers by breaking and re-formation of halogen–halogen interactions. Application of stress on the (100) face, in the direction where π···π interactions dominate the packing, leads to immediate crystal disintegration. Within a broader perspective, this study highlights the yet unrecognized extraordinary malleability of molecular crystals withstrongly anisotropic supramolecular interactions (Nature Chemistry, 2015,7(1), 65-72).




Main P.I.

  • Dr. Soumyajit Ghosh

Group Members

  • Ms. C. Ragaverthini (PhD Student)
  • Ms. A. Amutha (PhD Student)
  • Mr.  Nipun P  (PhD Student)
  • Ms. Madhumathi R. L. (PhD Student)
  • Mr. Deepak (MSc Student)


  1. Investigation on visible light assisted gas sensing ability of multi-walled carbon nanotubes coated with pyrene based organic molecules Manoharan Elakia, Marappan Gobinatha, Yuvaraj Sivalingam, Elumalai Palani, Soumyajit Ghosh, Venkatramaiah Nutalapati, Velappa Jayaraman Surya* Physica E Low Dimens. Syst. Nanostruct. 2020, 124, 114232.
  2. Combining Optical Properties with Flexibility in Halogen-Substituted Benzothiazole Crystals Nipun P. Thekkeppat, Madhumathi Lakshmipathi, Almaz S. Jalilov, Priyadip Das, Abdul Malik P. Peedikakkal*, and Soumyajit Ghosh* Cryst. Growth & Des. 2020, 20(6), 3937-3943. (IF:4.153)
  3. Micromanipulation of Mechanically Compliant Organic Single‐Crystal Optical Microwaveguides Mari Annadhasan,  Durga Prasad Karothu,  Ragaverthini Chinnasamy, Luca Catalano,  Ejaz Ahmed,  Soumyajit Ghosh,* Pance Naumov,* Rajadurai Chandrasekar* Angew. Chem. Int. Ed., 2020, 59(33), 13821-13830. (IF: 12.257) (Nature Indexed Journal)
  4. The design and development of short peptide-based novel smart materials to prevent fouling by the formation of non-toxic and biocompatible coatings Amutha Arul, Subramaniyam Sivagnanam, Ananta Dey, Oindrilla Mukherjee, Soumyajit Ghosh* and Priyadip Das* RSC Advances, 2020, 10, 13420-13429.
  5. Structure Property Correlation of a Series of Halogenated Schiff Base Crystals and Understanding of the Molecular Basis Through Nanoindentation, Ragaverthini Chinnasamy, Amutha Arul, Ammar AlMousa, Mangalampalli S. R. N. Kiran, Priyadip Das, Almaz S. Jalilov, Abdul Malik P. Peedikakkal*, Soumyajit Ghosh* Cryst. Growth & Des., 2019, 19 (11), 6698-6707. (IF:4.153)
  6. Screening, crystal structures and solubility studies of a series of multidrug salt hydrates and cocrystals of fenamic acids with trimethoprim and sulfamethazine B. Bhattacharya, S. Das, G. Lal, S. R. Soni, A. Ghosh, C. M. Reddy, S. Ghosh*Journal of Molecular Structure 2020, 1199, 127028. I.F 2.12
  7. Concentration-dependent fabrication of short-peptide-based different self-assembled nanostructures with various morphologies  and intracellular delivery property. Sivagnanam, S.; Arul, A.; Ghosh, S.; Dey, A.; Ghorai, S.; Das, P.  Mater. Chem. Front.; 2019, 3, 2110-2119.
  8. Understanding Structural Variations in Elastic Organic Crystals by in situ High pressure FTIR Spectroscopy and Nanoindentation Study, Somnath Ganguly, Ragaverthini Chinnasamy, Shyamal Parikh, Mangalampalli  S R N Kiran, U. Ramamurty, Himal Bhatt, M. N. Deo, Soumyajit Ghosh* and Pallavi Ghalsasi* Cryst. Growth & Des.201919(4), 2114-2122, IF: 4.2
  9. Elastic flexibility tuning via interaction factor modulation in molecular crystals, Manish Kumar Mishra, Sourabh B. Kadambi, Upadrasta Ramamurty* and Soumyajit Ghosh* Chemical Communications 2018, 54, 9047. IF: 6.3
  10. Tuning mechanical behaviour by controlling structure of a series of theophylline co-crystals, Shubhangi Kakkar, Biswajit Bhattacharya, C. Malla Reddy* and Soumyajit Ghosh* CrystEngComm, 2018, 20, 1101.  IF: 3.474
  11. In situ high pressure study of an elastic crystal by FTIR spectroscopy, Manish Kumar Mishra,* Pallavi Ghalsasi, M. N. Deo, Himal Bhatt, Himangshu K. Poswal, Soumyajit Ghosh* and Somnath Ganguly* CrystEngComm, 2017, 19, 7083 - 7087. IF: 3.474
  12. Dual Stress and Thermally Driven Mechanical Properties of the Same Organic Crystal: 2,6-Dichlorobenzylidene-4-fluoro-3-nitroaniline, Soumyajit Ghosh, Manish Kumar Mishra, SomnathGanguly and Gautam R. Desiraju (J. Am. Chem. Soc., 2015, 137, 9912-9921) IF: 13.858
  13. Designing elastic organic crystals: Highly flexible polyhalogenated N-benzylidineanilines Soumyajit Ghosh, Manish Kumar Mishra, Sourabh B. Kadambi, UpadrastaRamamurty and Gautam R. Desiraju Angew. Chem. Int. Ed., 2015, 54, 2674-2678.ISSN:1433-7851, IF: 11.336
  14. Spatially resolved analysis of short-range structure perturbations in a plastically bent molecular crystal Manas K. Panda,ǂSoumyajit Ghosh,ǂNobuhiro Yasuda, Taro Moriwaki, Goutam Dev Mukherjee, C. Malla Reddy and PančeNaumov Nature Chemistry, 2015,7(1), 65-72.  ISSN: 1755-4330, Citing References: 20, IF: 25.325. ǂ These authors contributed equally to this work.Highlighted in Nature India, http://www.natureasia.com/en/nindia/article/10.1038/nindia.2015.15
  15. Drug–drug salt forms of ciprofloxacin with diflunisal and indoprofen ParthaPratim Bag, Soumyajit Ghosh, Hamza Khan, Ramesh Devarapalli and C. Malla ReddyCrystEngComm, 2014, 16, 7393-7396.    ISSN: 1466-8033, IF: 3.858
  16. Molecular mechanics of elastic and bendable caffeine co-crystals Chun-Teh Chen, Soumyajit Ghosh, C. Malla Reddy and Markus J. Buehler Phys. Chem. Chem. Phys.,2014, 16, 13165-13171.   ISSN: 1463-9076, IF: 4.198
  17. The Role of Weak Interactions in the Phase Transition and Distinct Mechanical Behavior of Two Structurally Similar Caffeine Co-crystal Polymorphs Studied by Nanoindentation Soumyajit Ghosh, Arobendo Mandal, M. S. R. N. Kiran, U. Ramamurty and C. Malla Reddy Cryst. Growth & Des., 2013, 13(10), 4435-4441. ISSN:1528-7483, Citing References: 34, IF: 4.689
  18. Elastically Bendable Caffeine Co-crystals: Implications for Flexible Organic Materials Design Soumyajit Ghosh and C. Malla Reddy Angew. Chem. Int. Ed., 2012, 51, 10319-10323. Highlighted in Nature Chemistry, 2012, 4, 866.Highlighted in Nature India, October 2012. Highlighted in Magazine, ChemistryWorld(UK) September issue of 2012Caffeine Crystals with an elastic bent http://www.rsc.org/chemistryworld/2012/09/caffeine-crystals-needles-elastic.ISSN:1433-7851, Citing References: 49, IF: 11.336
  19. Polymorphs, Salts, and Cocrystals: What’s in a Name? SrinivasuluAitipamula, Rahul Banerjee, Arvind K. Bansal, Kumar Biradha, Miranda L. Cheney, Angshuman Roy Choudhury, Gautam R. Desiraju, Amol G. Dikundwar, Ritesh Dubey, NagakiranDuggirala, Preetam P. Ghogale, Soumyajit Ghosh, Pramod Kumar Goswami, N. Rajesh Goud, Ram R. K. R. Jetti, Piotr Karpinski, Poonam Kaushik, Dinesh Kumar, Vineet Kumar, Brian Moulton, Arijit Mukherjee, Gargi Mukherjee, Allan S. Myerson, VibhaPuri, ArunachalamRamanan, T. Rajamannar, C. Malla Reddy, Nair Rodriguez-Hornedo, Robin D. Rogers, T. N. Guru Row, Palash Sanphui, Ning Shan, Ganesh Shete, Amit Singh, Changquan C. Sun, Jennifer A. Swift, Ram Thaimattam, Tejender S. Thakur, Rajesh Kumar Thaper, Sajesh P. Thomas, SrinuTothadi, Venu R. Vangala, Narayan Variankaval, PeddyVishweshwar, David R. Weyna, and Michael J. ZaworotkoCryst. Growth & Des., 2012, 12 (5), 2147-2152. ISSN:1528-7483, Citing References: 163, IF: 4.689
  20. Co-crystals of caffeine with substituted nitroanilines and nitrobenzoic acids: Structure-mechanical property and thermal studies Soumyajit Ghosh and C. Malla Reddy, CrystEngComm, 2012, 14, 2444-2453. (Featured among Top ten most accessed articles in February 2012) ISSN:1466-8033, Citing References: 9, IF: 3.879
  21. Co-Crystals of Sulfamethazine with Some Carboxylic Acids and Amides: Co-Former Assisted Tautomerism in an Active Pharmaceutical Ingredient and Hydrogen Bond Competition Study Soumyajit Ghosh, ParthaPratim Bag and C. Malla Reddy, Cryst. Growth & Des., 2011, 11 (8), 3489–3503.ISSN:1528-7483, Citing References: 56, IF: 4.689
  22. Mechanical Properties of Molecular Crystals—Applications to Crystal Engineering C. Malla Reddy, G. Rama Krishna, and Soumyajit Ghosh CrystEngComm,2010, 12, 2296-2314. Highlight From themed issue New Talent).ISSN:1466-8033, Citing References: 70, IF: 3.858 
  23. Cross Linking of Gold Nanoparticles with Hexa-peri-hexabenzocoronene Derivatives SivamuruganVajiravelu, Soumyajit Ghosh, and Suresh ValiyaveettilJ. Nanosci. Nanotechnol., 2009, 9, 6587. ISSN:1533-4880, IF: 1.1


  1. Patents Published:

    1. (US20190055224) NOVEL FORMS OF LUMACAFTOR AND PROCESSES FOR THE PREPARATION THEREOF Publication Date: 21.02.2019 Applicant: Mylan Laboratories Ltd., Hyderabad
    2. (US20180282351) Amorphous Ixazomib Citrate Publication Date: 04.10.2018 Applicant: Mylan Laboratories Ltd., Hyderabad
    3. (IN5209/CHE/2015) POLYMOPHS OF LUMACAFTOR Publication Date: 01.12.2017, Applicant: Mylan Laboratories Ltd., Hyderabad
    4. (IN5942/CHE/2015) AN AMORPHOUS NINTEDANIB ESYLATE AND SOLID DISPERSION THEREOF Publication Date: 23.06.2017, Applicant: Mylan Laboratories Ltd., Hyderabad

    Patents Filed:

    1. WO/2016/125190 ―Novel Crystalline Forms Of Vortioxetine, Premixes,And Processes For The Preparation Thereof
    2. WO/2017/046815 ―Polymorphs of Ixazomib Citrate and Processes For the Preparation Thereof

        Courses Taught at SRMIST, Kattankulathur

  • BSc Chemistry: Organic Reagents and Reaction Mechanisms (UCY14601) Even Semester 2016-2017, Even Semester 2018-2019, Even Semester 2019-2020.
  • BTech: Principles of Environmental Science (15CY102) Even Semester 2016-2017, Odd Semester 2017-2018, Even Semester 2017-2018 (Two batches A1 and A2)
  • BTech: Engineering Chemistry (15CY101) Odd Semester 2017-2018
  • MSc Physics: Chemistry of Biomolecules (17PCY3NA) Odd Semester 2018-2019 (Open Elective Course), Chemistry of Biomolecules (18PCY3NA) Odd Semester 2019-2020



Postdoctoral Positions
Interested candidates can directly contact Dr. Soumyajit Ghosh. Prospective candidated can apply for NPDF Fellowship under DST-SERB.


Interested candidates please send his/her CV to - Dr. Soumyajit Ghosh. Candidates who qualified CSIR NET Examination will be given priority.

(Email  ID: soumyajs@srmist.edu.in)

(Alt Email ID: soumyajitghosh89@gmail.com)

Dr. Soumyajit Ghosh
Research Assistant Professor
Office 709A, 7th Floor, University Main Building
Department of Chemistry, Kattankulathur Campus, SRM Institute of Science and Technology (formerly known as SRM University)
Chennai – 603203
Mobile No. 9908236087
Email: soumyajs@srmist.edu.in