Connecting Science and Technology for a brighter tomorrow

Name :

Dr. Sandeep Kumar Dey

Designation : Scientist
Qualification : M.Sc. (NEHU Shillong), PhD (IIT Guwahati)
Contact Details : Coal and Energy Division, CSIR-North East Institute of Science & Technology, Jorhat-785006, Assam, India
Email id :

Research Interest
  • Department of Science and Technology (DST) New Delhisponsored Project: Urea and Thiourea post-modified Fluorogenic Covalent Organic Frameworks for Anion adsorption and Hydrogen Bond DonorCatalysis (2017−2022).

Awards and Fellowships
  • INSPIRE Faculty Fellowship from Department of Science and Technology (DST), India (2017).
  • Alexander-von-Humboldt (AvH) Postdoctoral Research Fellowship, Germany (2014).
  • RSC Advances best poster award in “Third Asian Conference on Coordination Chemistry ACCC-III, New Delhi (2011).
  • CSIR-UGC National Eligibility Test (NET) for Junior Research Fellowship (JRF) in Chemical Science (2007).
  • Graduate Aptitude Test in Engineering (GATE) in Chemistry (2007). 
List of Publications (Most Recent Ten)
  • Anamika Gogoi, Dipjyoti Dutta, Beatriz Gil-Hernández and Sandeep Kumar Dey,* Anion-exchange facilitated selective extraction of sulfate and phosphate by overcoming the Hofmeister bias, RSC Advances, 2023,13, 16185-16195.
    2. Sandeep Kumar Dey,* Beatriz Gil-Hernández, Vivekanand V. Gobre, Dennis Woschko, Sarvesh S. Harmalkar, Firdaus Rahaman Gayen, Biswajit Saha, Rajib Lochan Goswamee and Christoph Janiak,Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media, Dalton Transactions, 2022,51, 15239-15245.
    3. Sandeep Kumar Dey,*Sarvesh S. Harmalkar, Rahul K H O Yadav, Prem Lama,* and Gopal Das; Structure directing roles of weak noncovalent interactions and charge-assisted hydrogen bonds in the self-assembly of solvated podands: Example of an anion-assisted dimeric water capsule, Crystal Engineering Communications, 2022,24, 4063-4073.
    4. Sandeep Kumar Dey,* Sonam Kumari, Sonal Mandrekar, Shashank N. Mhaldar, Sarvesh S. Harmalkar and Christoph Janiak;Revisiting salicylidene-based anion receptors, RSC Advances, 2021,11, 36850-36858.
    5.Sandeep Kumar Dey,*Archana, Sybil Pereira, Sarvesh S. Harmalkar, Shashank N. Mhaldar, Vivekanand V. Gobre and Christoph Janiak; Selective encapsulation and extraction of hydrogenphosphate by a hydrogen bond donor tripodal receptor,Crystal Engineering Communications, 2020, 22, 6152-6160.
    6. Sandeep Kumar Dey,*and Christoph Janiak*; The curious case of salicylidene-based fluoride sensors: chemosensors or chemodosimeters or none of them,RSC Advances, 2020,10, 14689-14693.
    7. Sandeep Kumar Dey,* Beatriz Gil Hernández, Milagrina D’Souza, Shashank N. Mhaldar,Vivekanand V. Gobre, and Sunder N. Dhuri; Anion selective disruption of strong intramolecular –NH⋅⋅⋅O=C hydrogen bonds in a nonchromogenic tripodal benzoylthiourea receptor to display colorimetric response, Chemistry Select, 2019, 4, 4068-4073.
    8. Sandeep Kumar Dey,* Mohammad Al Kobaisi and Sheshanath V. Bhosale*;Functionalized Quinoxaline for Chromogenic and Fluorogenic Anion Sensing, Chemistry Open, 2018, 7, 934-952.    
    9. Sandeep Kumar Dey, Dennis Dietrich, Susann Wegner, Beatriz Gil-Hernandez, Sarvesh Shyam Harmalkar, Nader de Sousa Amadeu and Christoph Janiak*; Palladium-nanoparticle immobilized porous polyurethane material for quick and efficient heterogeneous catalysis of Suzuki-Miyaura cross-coupling reaction at room temperature, Chemistry Select 2018, 3, 1365 – 1370.
    10. Hassan M. A. Hassan, Reda F. M. Elshaarawy, Sandeep Kumar Dey, Ilka Simon, Christoph Janiak*; Microwave-assisted Hydrothermal Fabrication of Magnetic Amino-grafted Graphene Oxide Nanocomposite as a Heterogeneous Knoevenagel Catalyst, Catalysis Letter, 2017, 147, 1998-2005.
    11. Sandeep Kumar Dey, Nader de Sousa Amadeu and Christoph Janiak*; Microporous polyurethane material for size selective heterogeneous catalysis of the Knoevenagel reaction, Chemical Communication, 2016, 52, 7834–7837.
    12. Sandeep Kumar Dey, Arghya Basu, Romen Chutia and Gopal Das*; Anion Coordinated Capsules and Pseudocapsules of Tripodal Amide, Urea and Thiourea Scaffolds, RSC Advances, 2016, 6, 26568-26589.
    13. Romen Chutia, Sandeep Kumar Dey and Gopal Das*; Self-assembly of a tris(urea) receptor as tetrahedral cage for the encapsulation of a discrete tetrameric mixed phosphate cluster (H2PO4−•HPO42−)2, Crystal Growth &Design, 2015, 15, 4993−5001.
    14. Romen Chutia, Sandeep Kumar Dey and Gopal Das*; A supramolecular dual-host based ion-pair induced formation of 1D coordination polymer, Crystal Engineering Communications, 2013, 15, 9641–9647.
    15. Arghya Basu, Sandeep Kumar Dey and Gopal Das*; Amidothiourea based colorimetric receptors for basic anions: evidence of anion induced deprotonation of amide –NH proton and hydroxide induced anion---π interaction with the deprotonated receptors, RSC Advances, 2013, 3, 6596–6605.
    16. Romen Chutia, Sandeep Kumar Dey and Gopal Das*, Positional isomeric effect in nitrophenyl functionalized tripodal urea receptors toward binding and encapsulation of anions, Crystal Growth &Design, 2013, 13, 883–892.
    17. Sandeep Kumar Dey, Barun Kumar Dutta and Gopal Das*; Binding discrepancy of fluoride in quaternary ammonium and alkali salts by a tris(amide) receptor in solid and solution-states, Crystal Engineering Communications, 2012, 14, 5305–5314.
    18. Sandeep Kumar Dey and Gopal Das*; Selective inclusion of PO43− within persistent dimeric capsules of a tris(thiourea) receptor and evidence of cation/solvent sealed unimolecular capsules, Dalton Transactions, 2012, 41, 8960–8972.
    19. Sandeep Kumar Dey, Romen Chutia and Gopal Das*; Oxyanion-encapsulated caged supramolecular frameworks of a tris(urea) receptor: Evidences of hydroxide- and fluoride-ion-induced fixation of atmospheric CO2 as a trapped CO32− anion, Inorganic Chemistry, 2012, 51, 1727–1738.
    20. Sandeep Kumar Dey and Gopal Das*; Encapsulation of trivalent phosphate anion within a rigidified π-stacked dimeric capsular assembly of tripodal receptor, Dalton Transactions, 2011, 40, 12048–12051.
    21. Sandeep Kumar Dey and Gopal Das*; Fluoride selectivity induced transformation of charged anion complexes into unimolecular capsule of a π-acidic triamide receptor stabilized by strong N-H∙∙∙F− and C-H∙∙∙F− hydrogen bonds, Crystal Growth &Design, 2011, 11, 4463–4473.
    22. Ballav Moni Borah, Sandeep Kumar Dey and Gopal Das*; Crystal to Calcite: Fabrication of pure calcium carbonate polymorphs in the solid-state, Crystal Growth &Design, 2011, 11, 2773–2779.
    23. Sandeep Kumar Dey and Gopal Das*; A selective fluoride encapsulated neutral tripodal receptor capsule: solvatochromism and solvatomorphism, Chemical Communications, 2011, 47, 4983–4985.
    24. Chirantan Kar, Sandeep Kumar Dey and Gopal Das*; Excited-state intermolecular proton transfer induced “TURN ON” fluorescent chemosensor for selective detection of PO43- anion, SensorLetters, 2011, 9, 1430–1434.
    25. Sandeep Kumar Dey and Gopal Das*; Binding of HgCl2 by a nitro functionalized tripodal receptor and its decomplexation controlled by anion complexation, European Journal of Inorganic Chemistry, 2011, 3, 429–438.
    26. Sandeep Kumar Dey, Avijit Pramanik and Gopal Das*; Anion specificity induced conformational changes in cresol-based tripodal podands controlled by weak interactions: structural and Hirshfeld surface analysis, Crystal Engineering Communications, 2011, 13, 1664–1675.
    27. Sandeep Kumar Dey, Bimlesh Ojha and Gopal Das*; A subtle interplay of C–H hydrogen bonds in complexation of anions of varied dimensionality by a nitro functionalized tripodal podand, Crystal Engineering Communications, 2011, 13, 269–278.
    28. Sandeep Kumar Dey and Gopal Das*; Conformational polymorphism of a simple tripodal podand bearing nitro functionality, Crystal Growth &Design, 2010, 10, 754–760.
    29. Ballav Moni Borah, Bedabrata Saha, Sandeep Kumar Dey and Gopal Das*; Surface-modification-directed controlled adsorption of serum albumin onto magnetite nanocuboids synthesized in a gel-diffusion technique, J.Colloid Interface Sci., 2010, 349, 114–121.