NISER

PhD in 2007 from University of Hyderabad, India

Physical Chemistry

Membership award from RSC

Membership award from ACS

1. Assessing the Suitability of a Dicationic Ionic Liquid as a Stabilizing Material for the Storage of DNA in Aqueous Medium. Amita Mahapatra, Sahadev Barik, Lakkoji Satish, Manjari Chakraborty, and Moloy Sarkar* 0 Langmuir XXXX, XXX, XXX−XXX. https://doi.org/10.1021/acs.langmuir.2c02530 
2. "Temperature-dependent Ultrafast Solvation Dynamics of Choline Chloride-based Deep Eutectic Solvent (DES) and Hydroxyl Functionalized Room Temperature Ionic Liquids (RTILs): Exploring the Difference in Solvent Response Between DES and RTILs."Sahadev Barik, Naupada Preeyanka, Manjari Chakraborty, Amita Mahapatra, Moloy Sarkar. .Journal of Molecular Liquids, vol. 367, Elsevier BV, Dec. 2022, p. 120545. Crossref, https://doi.org/10.1016/j.molliq.2022.120545.
3. "Defect-Mediated Charge Carrier Recombination of Zinc–Silver–Indium Sulfide QDs in the Presence of Naphthoquinone Derivatives: An Insight Into the Interfacial Surface Dynamics." Naupada Preeyanka, Tanmay Goswami, Ramchandra Saha, Amit Akhuli, Asish K. Dehury and Moloy Sarkar. . The Journal of Physical Chemistry C, vol. 126, no. 37, American Chemical Society (ACS), Sept. 2022, pp. 15838–48. Crossref, https://doi.org/10.1021/acs.jpcc.2c05369.
4. "Realization of a Model-Free Pathway for Quantum Dot–Protein Interaction Beyond Classical Protein Corona or Protein Complex." Naupada Preeyanka, Amit Akhuli, Himani Dey, Debabrata Chakraborty, Abdur Rahaman, Moloy Sarkar. . Langmuir, vol. 38, no. 34, American Chemical Society (ACS), Aug. 2022, pp. 10704–15. Crossref, https://doi.org/10.1021/acs.langmuir.2c01789.
5. "Understanding the Interaction Between Inorganic and Organic Excitonic Components of an Inorganic‐Organic Nanohybrid Associate." Somnath Banerjee, Debabrata Chakraborty, Naupada Preeyanka,  Moloy Sarkar. . ChemNanoMat, vol. 8, no. 8, Wiley, June 2022. Crossref, https://doi.org/10.1002/cnma.202200117.
6. "Turn-Off Detection of Reactive Oxidative Species and Turn-On Detection of Antioxidants Using Fluorescent Copper Nanoclusters." Amit Akhuli, Naupada Preeyanka,  Debabrata Chakraborty,  Moloy Sarkar. . ACS Applied Nano Materials, vol. 5, no. 4, American Chemical Society (ACS), Mar. 2022, pp. 5826–37. Crossref, https://doi.org/10.1021/acsanm.2c01005.
7. "Choline Chloride and Ethylene Glycol Based Deep Eutectic Solvent (DES) Versus Hydroxyl Functionalized Room Temperature Ionic Liquids (RTILs): Assessing the Differences in Microscopic Behaviour Between the DES and RTILs." Sahadev Barik, Manjari Chakraborty, Amita Mahapatra, Moloy Sarkar. . Physical Chemistry Chemical Physics, vol. 24, no. 11, Royal Society of Chemistry (RSC), 2022, pp. 7093–106. Crossref, https://doi.org/10.1039/d1cp05010a.
8. "Effect of Lithium-Ion on the Structural Organization of Monocationic and Dicationic Ionic Liquids." Manjari Chakraborty,  Sahadev Barik, Amita Mahapatra, Moloy Sarkar. . The Journal of Physical Chemistry B, vol. 125, no. 47, American Chemical Society (ACS), Nov. 2021, pp. 13015–26. Crossref, https://doi.org/10.1021/acs.jpcb.1c07442.
9. Comparison Between Pyrrolidinium-based and Imidazolium-based Dicationic Ionic Liquids: Intermolecular Interaction, Structural Organization, and Solute Dynamics." Amita Mahapatra,  Manjari Chakraborty, Sahadev Barik, Moloy Sarkar. .  Physical Chemistry Chemical Physics, vol. 23, no. 37, Royal Society of Chemistry (RSC), 2021, pp. 21029–41. Crossref, https://doi.org/10.1039/d1cp02790e.
10. "Understanding the Microscopic Structural Organization of Neat Ammonium Based Ionic Liquids Through Resonance Energy Transfer (RET) Studies." Debashis majhi, Manjari Chakraborty, Sahadev Barik, Amita Mahapatra, Moloy Sarkar. .  Chemical Physics Impact, vol. 3, Elsevier BV, Dec. 2021, p. 100034. Crossref, https://doi.org/10.1016/j.chphi.2021.100034.
11. "Binary Mixtures of Ionic Liquids: Ideal, Non-ideal, or Quasi-ideal?" Manjari Chakraborty, Sahadev Barik, Amita Mahapatra, Moloy Sarkar. .  The Journal of Chemical Physics, vol. 154, no. 22, AIP Publishing, June 2021, p. 224507. Crossref, https://doi.org/10.1063/5.0051417.
12. "Probing How Various Metal Ions Interact With the Surface of QDs: Implication of the Interaction Event on the Photophysics of QDs." Naupada Preeyanka, Moloy Sarkar. .  Langmuir, vol. 37, no. 23, American Chemical Society (ACS), May 2021, pp. 6995–7007. Crossref, https://doi.org/10.1021/acs.langmuir.1c00548.
13. "An Imine Linked Fluorescent Covalent Organic Cage: The Sensing of Chloroform Vapour and Metal Ions, and the Detection of Nitroaromatics." Ramesh Kumar Gajula, Subhrajit mohanty, Manjari Chakraborty, Moloy Sarkar, M.Jaya Prakash. . New Journal of Chemistry, vol. 45, no. 10, Royal Society of Chemistry (RSC), 2021, pp. 4810–22. Crossref, https://doi.org/10.1039/d1nj00434d.
14. Probing the Interaction of Bovine Serum Albumin with Copper Nanoclusters: Realization of Binding Pathway Different from Protein Corona Amit Akhuli, Debabrata Chakraborty, Aman Kumar Agrawal, Moloy Sarkar.. Langmuir 2021, 37, 5, 1823–1837. 
15. "Highly Efficient Energy Transfer From a Water Soluble Zinc Silver Indium Sulphide Quantum Dot to Organic J-aggregates." Naupada Preeyanka, Himani Dey, Sudipta Seth, Abdur Rahaman, Moloy Sarkar. .  Physical Chemistry Chemical Physics, vol. 22, no. 22, Royal Society of Chemistry (RSC), 2020, pp. 12772–84. Crossref, https://doi.org/10.1039/d0cp01845g.
16. "How Does Addition of Lithium Salt Influence the Structure and Dynamics of Choline Chloride-Based Deep Eutectic Solvents?" Sahadev Barik, Manjari Chakraborty, Moloy Sarkar. .  The Journal of Physical Chemistry B, vol. 124, no. 14, American Chemical Society (ACS), Mar. 2020, pp. 2864–78. Crossref, https://doi.org/10.1021/acs.jpcb.9b11947.
17. "Highly Efficient Energy Transfer From Fluorescent Gold Nanoclusters to Organic J-Aggregates."  Somnath Banerjee, Naupada Preeyanka,  Himani Dey, Sudipta Seth,  Abdur Rahaman, Moloy Sarkar. . The Journal of Physical Chemistry C, vol. 124, no. 9, American Chemical Society (ACS), Feb. 2020, pp. 5009–20. Crossref, https://doi.org/10.1021/acs.jpcc.9b10347.
18. Probing the Interactions of 1-alkyl-3-methylimidazolium Tetrafluoroborate (Alkyl = Octyl, Hexyl, Butyl and Ethyl) Ionic Liquids with Bovine Serum Albumin: An Alkyl Chain Length Dependent Study. Mullah Muhaiminul Islam, Sahadev Barik, and Moloy Sarkar. . J. Phys. Chem. B, 2019, DOI: 10.1021/acs.jpcb.8b10795
19. Electrostatically Driven FÓ§rster Resonance Energy Transfer between a Fluorescent Metal Nanoparticle and J-Aggregate in an Inorganic-Organic Nanohybrid Material. A. K. Agrawal, P. K. Sahu, S. Seth and Moloy Sarkar. J. Phys. Chem. C, 2019. doi: 10.1021/acs.jpcc.8b10274.
20. Understanding the Behavior of Monocationic and Dicationic Room-Temperature Ionic Liquids Through Resonance Energy-Transfer Studies."Manjari Chakraborty, Tasnim Ahmed, Moloy Sarkar. .  Langmuir, vol. 35, no. 49, American Chemical Society (ACS), Nov. 2019, pp. 16172–84. Crossref, https://doi.org/10.1021/acs.langmuir.9b02776
21. Understanding the Microscopic Behaviour of Binary Mixtursof Ionic Liquids through Various Spectroscopic Techniques. M. Chakraborty, T. Ahmed, R. S. Dhale, D. Majhi and Moloy Sarkar. J. Phys. Chem. B, 2018, 122,12114-12130.
22. Striking Similarities in the Fluorescence Behavior Between Carbon Dots and Ionic Liquids: Towards Understanding the Fluorescence Behavior of Carbon Dots. S. Roy, N. Preeyanka, D. Majhi, S. Seth and Moloy Sarkar, J. Phys. Chem. C, 2018, 122, 12384-12394.
23. Evidence of Homo-FRET in Quantum Dot-Dye Hetrostructured Assembly. S. Saha, D. Majhi, K. Bhattacharyya, N. Preeyanka, A. Datta and Moloy Sarkar, Phys. Chem. Chem. Phys., 2018, 20, 9523-9535.
24. Difference in the Behavior of Dicationic and Monocationic Ionic Liquids as Revealed by Time Resolved-Fluorescence, NMR and Fluorescence Correlation Spectroscopy (FCS) Study. D. Majhi, S. Seth and Moloy Sarkar, Phys. Chem. Chem. Phys., 2018, 20,7844-7856.
25. "Weak Donor-/Strong Acceptor-Linked Anthracenyl π-Conjugates as Solvato(Fluoro)Chromophore and AEEgens: Contrast between Nitro and Cyano Functionality." Moghal Zubair Khalid Baig, Banchhanidhi Prusti, Durba Roy, Prabhat Kumar Sahu, Moloy Sarkar, Aayushi Sharma, and Manab Chakravarty. ACS Omega 3, no. 8 (August 15, 2018): 9114–25. https://doi.org/10.1021/acsomega.8b01258
26. "Free-Radical Sensing by Using Naphthalimide Based Mesoporous Silica (MCM-41) Nanoparticles: A Combined Fluorescence and Cellular Imaging Study." Gaurav Jha, Subhasis Roy, Prabhat Kumar Sahu, Somnath Banerjee, N. Anoop, Abdur Rahaman, and Moloy Sarkar. Chemical Physics Letters 692 (January 2018): 324–32. https://doi.org/10.1016/j.cplett.2017.12.068.
27.  
28. "Haloarene-Linked Unsymmetrically Substituted Triarylethenes: Small AIEgens To Detect Nitroaromatics and Volatile Organic Compounds." Moghal Zubair Khalid Baig, M. Zubair, Prabhat Kumar Sahu, Moloy Sarkar, and Manab Chakravarty. The Journal of Organic Chemistry 82, no. 24 (December 5, 2017): 13359–67. https://doi.org/10.1021/acs.joc.7b02438.
29. "Spin-Lattice Relaxation Studies on Deep Eutectic Solvent/Choliniumtetrachloroferrate Mixtures: Suitability of DES-Based Systems towards Magnetic Resonance Imaging Studies." Abhilash Chandra, Prabhat Kumar Sahu, Subhayan Chakraborty, Arindam Ghosh, and Moloy Sarkar. Magnetic Resonance in Chemistry 56, no. 2 (October 17, 2017): 120–26. https://doi.org/10.1002/mrc.4668.
30.  "Probing the Microscopic Structural Organization of Neat Ionic Liquids (ILs) and Ionic Liquid-Based Gels through Resonance Energy Transfer (RET) Studies." Debashis Majhi, and Moloy Sarkar. Physical Chemistry Chemical Physics 19, no. 34 (2017): 23194–203. https://doi.org/10.1039/c7cp04728b.
31. "Understanding the Microscopic Behavior of the Mixture of Ionic Liquid/Ethylene Glycol/Lithium Salt through Time-Resolved Fluorescence, Nuclear Magnetic Resonance (NMR), and Electron Paramagnetic Resonance (EPR) Studies." Ranu Satish Dhale, Prabhat Kumar Sahu, and Moloy Sarkar. The Journal of Physical Chemistry B 121, no. 33 (August 15, 2017): 7934–45. https://doi.org/10.1021/acs.jpcb.7b04585.
32. "Synthesis, Photophysical Studies on Some Anthracene–Based Ionic Liquids and Their Application as Biofilm Formation Inhibitor."Gaurav Jha, Prabhat Kumar Sahu, Sasmita Panda, Durg V. Singh, Shashank Patole, Harapriya Mohapatra, and Moloy Sarkar. ChemistrySelect 2, no. 8 (March 13, 2017): 2426–32. https://doi.org/10.1002/slct.201601964.
33. "Easy Access to New Anthracenyl π-Conjugates: Generation of Distinct AIE-Active Materials." Moghal Zubair Khalid Baig, M., Debashis Majhi, R. N. Prasad Tulichala, Moloy Sarkar, and Manab Chakravarty. Journal of Materials Chemistry C 5, no. 9 (2017): 2380–87. https://doi.org/10.1039/c6tc05671g.
34. Probing the Microscopic Structural Organization of Neat Ionic Liquids (ILs) and Ionic Liquid-Based Gels through Resonance Energy Transfer (RET) Studies. D. Majhi and Moloy Sarkar, Phys. Chem. Chem. Phys., 2017, 19, 23194-23203.
35. Understanding the Microscopic Behavior of the Mixture of Ionic Liquid/Ethylene Glycol/Lithium Salt through Time-Resolved Fluorescence, Nuclear Magnetic Resonance (NMR), and Electron Paramagnetic Resonance (EPR) Studies. R. S. Dhale, P. K. Sahu and Moloy Sarkar, J. Phys. Chem. B, 2017, 121, 7934-7945.
36. Probing interactions of structurally similar but chemically distinguishable organic solutes with 1-ethyl-3-methylimidazolium alkylsulfate(alkyl = ethyl, hexyl and octyl) ionic liquids through fluorescence, NMR and fluorescence correlation spectroscopy (FCS) study. D. Majhi, P. K. Sahu, S. Seth and Moloy Sarkar, Phys. Chem. Chem. Phys., 2016, 18, 22343-22354.
37. Probing the aggregation behavior of neat imidazolium-based alkyl Sulfate (alkyl= ethyl, butyl, hexyl and octyl) ionic liquids through time resolved fluorescence anisotropy, NMR and fluorescence correlation spectroscopy (FCS) study. D. Majhi, A. Pabbathi and Moloy Sarkar, J. Phys. Chem. B, 2016, 120, 193–205
38. Sudhir Kumar Das, Debashis Majhi, Prabhat Kumar Sahu, and Moloy Sarkar. "Linking Diffusion-Viscosity Decoupling and Jump Dynamics in a Hydroxyl-Functionalized Ionic Liquid: Realization of Microheterogeneous Nature of the Medium." ChemPhysChem 18, no. 2 (December 2, 2016): 198–207. https://doi.org/10.1002/cphc.201600983.
39. "Nuclear Magnetic Resonance, Fluorescence Correlation Spectroscopy and Time-Resolved Fluorescence Anisotropy Studies of Intermolecular Interactions in Bis(1-Methyl-1H-Imidazol-3-Ium-3-Yl)Dihydroborate Bis(Trifluoromethylsulfonyl)Amide and Its Mixtures with Various Cosolvents." Prabhat Kumar Sahu, Raju Nanda, Sudipta Seth, Arindam Ghosh, and Moloy Sarkar. Chemical Physics Letters 661 (September 2016): 100–106. https://doi.org/10.1016/j.cplett.2016.08.040.
40. "Probing the Interactions of Structurally Similar but Chemically Distinguishable Organic Solutes with 1-Ethyl-3-Methylimidazolium Alkyl Sulfate (Alkyl = Ethyl, Hexyl and Octyl) Ionic Liquids through Fluorescence, NMR and Fluorescence Correlation Spectroscopy (FCS) Studies." Debashis Majhi, Prabhat Kumar Sahu, Sudipta Seth, and Moloy Sarkar. Physical Chemistry Chemical Physics 18, no. 32 (2016): 22343–54. https://doi.org/10.1039/c6cp03006h.
41. "Studies on the Mechanism of Fluorescence Quenching of CdS Quantum Dots by 2-Amino-7-Nitrofluorene and 2-(N,N-Dimethylamino)-7-Nitrofluorene."Shiba Sundar Dandpat, Prabhat Kumar Sahu, and Moloy Sarkar. ChemistrySelect 1, no. 10 (July 1, 2016): 2290–98. https://doi.org/10.1002/slct.201600076.
42. "Reorientational Dynamics of Charged and Neutral Solutes in 1-Alkyl-3-Methylimidazoilum Bis(Trifluoromethylsulfonyl)Imide Ionic Liquids: Realization of Ionic Component of Hydrogen Bond." Prabhat Kumar Sahu, and Moloy Sarkar. Chemical Physics Letters 652 (May 2016): 177–83. https://doi.org/10.1016/j.cplett.2016.04.022.
43. "Studies on Intramolecular Electron Transfer Reaction in Donor–Spacer–Acceptor Systems in Room-Temperature Ionic Liquids." Prabhat Kumar Sahu, Sudhir Kumar Das, and Moloy Sarkar. Journal of Molecular Liquids 214 (February 2016): 24–31. https://doi.org/10.1016/j.molliq.2015.11.027.
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45. "Probing the Aggregation Behavior of Neat Imidazolium-Based Alkyl Sulfate (Alkyl = Ethyl, Butyl, Hexyl, and Octyl) Ionic Liquids through Time Resolved Florescence Anisotropy and NMR and Fluorescence Correlation Spectroscopy Study." Debashis Majhi, Ashok Pabbathi, and Moloy Sarkar. The Journal of Physical Chemistry B 120, no. 1 (December 23, 2015): 193–205. https://doi.org/10.1021/acs.jpcb.5b10137.
46.  "Understanding Structure–Property Correlation in Monocationic and Dicationic Ionic Liquids through Combined Fluorescence and Pulsed-Field Gradient (PFG) and Relaxation NMR Experiments." Prabhat Kumar Sahu, Arindam Ghosh, and Moloy Sarkar. The Journal of Physical Chemistry B 119, no. 44 (October 20, 2015): 14221–35. https://doi.org/10.1021/acs.jpcb.5b07357.
47. "Combined Photophysical, NMR and Theoretical (DFT) Study on the Interaction of a Multi Component System in the Absence and Presence of Different Biologically and Environmentally Important Ions." Abhas Kumar Bhoi, Prabhat Kumar Sahu, Gaurav Jha, and Moloy Sarkar. RSC Advances 5, no. 75 (2015): 61258–69. https://doi.org/10.1039/c5ra10414a.
48. "Investigating the Molecular and Aggregated States of a Drug Molecule Rutaecarpine Using Spectroscopy, Microscopy, Crystallography and Computational Studies." Shiba Sundar Dandpat, and Moloy Sarkar. Physical Chemistry Chemical Physics 17, no. 21 (2015): 13992–2. https://doi.org/10.1039/c5cp01980j.
49. "Investigation of the Influence of Alkyl Side Chain Length on the Fluorescence Response of C153 in a Series of Room Temperature Ionic Liquids."Sudhir Kumar Das, Debashis Majhi, Prabhat Kumar Sahu, and Moloy Sarkar. RSC Advances 5, no. 52 (2015): 41585–94. https://doi.org/10.1039/c4ra16864j.
50. "Fluoride Ion Sensing in Aqueous Medium by Employing Nitrobenzoxadiazole-Postgrafted Mesoporous Silica Nanoparticles (MCM-41)." Gaurav Jha, Anoop N., Abdur Rahaman, and Moloy Sarkar. Physical Chemistry Chemical Physics 17, no. 5 (2015): 3525–33. https://doi.org/10.1039/c4cp05350h.
51.  
52. Studies on Electronic Energy Transfer (EET) on a Series of Room Temperature Ionic Liquids (RTILs): Can the EET Studies on RTILs Be Exploited to Predict Their Structural Organization?" Sudhir Kumar Das, Prabhat Kumar Sahu, and Moloy Sarkar. RSC Advances 4, no. 74 (August 20, 2014): 39184. https://doi.org/10.1039/c4ra05582a.
53. "Analyte Interactions with a New Ditopic Dansylamide–Nitrobenzoxadiazole Dyad: A Combined Photophysical, NMR, and Theoretical (DFT) Study." Abhas Kumar Bhoi, Sudhir Kumar Das, Debashis Majhi, Prabhat Kumar Sahu, A. Nijamudheen, Anoop N., Abdur Rahaman, and Moloy Sarkar. The Journal of Physical Chemistry B 118, no. 33 (August 12, 2014): 9926–37. https://doi.org/10.1021/jp504631n.
54. "Probing the Aggregation Behavior of 4-Aminophthalimide and 4-(N,N-Dimethyl) Amino-N-Methylphthalimide: A Combined Photophysical, Crystallographic, Microscopic and Theoretical (DFT) Study." Debashis Majhi, Sudhir Kumar Das, Prabhat Kumar Sahu, Saied Md Pratik, Arun Kumar, and Moloy Sarkar. Physical Chemistry Chemical Physics 16, no. 34 (July 14, 2014): 18349. https://doi.org/10.1039/c4cp01912a.

Tool: Fluorescence Spectroscopy

Systems: Nano-materials, Perovskite nanocrystals,  Quantum dots, Metal nanoclusters, Ionic liquids, Deep Eutectic Solvents, Bio-Macromolecules

Methods: Single molecule fluorescence  study, Femtosecond upconversion, Fluorescence anisotropic, Photochemical Processes (Excited state energy transfer, Electron/hole transfer etc.), Solvation dynamics,  Physicochemical Analysis,

Instrumentations:  Time-Correlated Single Photon Counting (TCSPC) setup, Fluorescence correlation spectroscopy (FCS), Femtosecond upconversion setup, NMR, UV−VIS absorption spectroscopy, Fluorescence Spectroscopy, FTIR, Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), Circular Dichroism (CD) spectroscopy, isothermal titration calorimeter (ITC), Cyclic voltammetry (CV), Zetasizer