30.  S. Biswas, K. Mondal, J. Wang, D. Paul and R. I. Kaiser*, Photochemistry of Singly Levitated Benzene Ice Crystals and Implications to Titan’s Atmospheric Hydrocarbon Cycle, Under review.

29.  S. Biswas, S. Arias, S. J. Goettl, N. Dias, S. F. Wnuk, M. Ahmed*, A. M. Mebel* and R. I. Kaiser*, Indenyl-Benzyl Radical Recombination Leads to the Formation of Fluoranthene, a Non-Alternant Polycyclic Aromatic Hydrocarbon, Under review.

28.  S. Biswas, S. J. Goettl, V. S. Krasnoukhov, N. Dias, V. N. Azyazov, S. Arias, S. F. Wnuk, M. Ahmed*, A. M. Mebel* and R. I. Kaiser*, Circumstellar Origin of Chrysene (C18H12) via Self-Recombination of Resonantly-Stabilized 1-Indenyl Radicals and Implication to the Aromaticity of the Carbonaceous Asteroid Ryugu, Angew. Chem. Int. Ed., 2026, 65, ee8986387. DOI: 10.1002/anie.8986387. 

27.  S. Biswas, A. Isakov, N. Dias, M. T. Finn, J. Cokas, A. Ephsteyn*, A. N. Alexandrova*, M. Ahmed* and R. I. Kaiser*, Low Temperature Non-Oxidative Coupling of Methane on Atomically Dispersed Titanium-Aluminum-Boron Nanopowder, J. Am. Chem. Soc., 2026, 148, 10205-10215. DOI: 10.1021/jacs.6c01503. 

26.  F. Liang, S. Biswas, N. Melbourne, K. Mondal, R. Sun* and R. I. Kaiser*, Investigation of Freezing-Induced Anionic Interplay in Acoustically Levitated Artificial Seawater Droplets, J. Phys. Chem. A, 2026, 130, 229-241, DOI: 10.1021/acs.jpca.5c06239.

25. K. Mondal, M. McAnally, S. Biswas, N. Melbourne, R. Sun* and R. I. Kaiser*, Refractive Indices and Infrared Band Strengths of Amorphous Ices of Key Fluorinated Refrigerants 1,1,1,2-Tetrafluoroethane, 2,3,3,3–Tetrafluoropropene, and 3,3,3–Trifluoropropene, Chem. Phys. Chem., 27, e70330. DOI: 10.1002/cphc.202500680. (Cover Article) 

24. D. Paul, S. Biswas, N. Dias, M. T. Finn, A. S. Lipton, A. Epshteyn*, M. Ahmed* and R. I. Kaiser*, A Synchrotron-Based Vacuum Ultraviolet Photoionization Mass Spectrometer-Coupled Microreactor to Probe Thermocatalysis, Anal. Chem., 2025,97, 22846-22857, DOI: 10.1021/acs.analchem.5c04691. 

23.  S. Biswas, D. Paul, K. Mondal and R. I. Kaiser*, Reply to Buttersack et al.: Challenges in contactless temperature determination of supercooled aqueous droplets, PNAS, 2025, 122, e2518363122, DOI: 10.1073/pnas.2518363122.

22.  S. Biswas, J. Cokas, W. Gee, D. Paul, N. Dias, H. W. T. Morgan, M. T. Finn, B. M. Hudak, P.M. Godbold, C. A. Klug, A. Ephsteyn*, A. N. Alexandrova*, M. Ahmed* and R. I. Kaiser*, Unconventional Low Temperature Decomposition of Saturated Hydrocarbons over an Atomically-Dispersed Titanium-Aluminum-Boron Catalyst, Nat. Commun., 2025, 16, 6793, DOI: 10.1038/s41467-025-62112-2.

21.    K. Mondal, S. Biswas, N. Melbourne, R. Sun* and R. I. Kaiser*, Probing the Freezing Chemistry of Singly Levitated Aqueous Trifluoroacetic Acid Droplets in a Cryogenically Cooled Simulation Chamber Relevant to Earth’s Upper Troposphere, Chem. Sci., 2025, 16, 11039-11048, DOI: 10.1039/D5SC01698C. 

20.  S. Biswas, M. McAnally, S. D. Chambreau, S. Schneider, R. Sun and R. I. Kaiser*, Atmospheric Ignition Chemistry of Green Hypergolic Bipropellant 1-Ethyl-3-Methylimidazolium Cyanoborohydride – Hydrogen Peroxide in an Acoustic Levitator: Exploring a Potent Universal Propellant, Chem. Eur. J., 2025, 31, e202500593, DOI: 10.1002/chem.202500593.

19.  S. Biswas, D. Paul, K. Mondal and R. I. Kaiser*, Simulating Atmospheric Freezing of Single Aqueous Droplets to Ice in a Cryogenically Cooled Ultrasonic Levitator, PNAS, 2025, 122, e2425543122, DOI: 10.1073/pnas.2425543122. 

[Highlighted in: EurekAlert (AAAS)- https://www.eurekalert.org/news-releases/1072519

Phys.org- https://phys.org/news/2025-02-discovery-droplet-bridges-atmospheric-science.html

ScienceDaily- https://www.sciencedaily.com/releases/2025/02/250204003620.htm

ScienMag-https://scienmag.com/revealing-the-freezing-process-of-water-droplets-advancements-in-atmospheric-science-and-climate-solutions]

18.  S. Biswas, K. Fujioka, D. Paul, M. Mcanally, S. D. Chambreau, S. Schneider, R. Sun* and R. I. Kaiser*, Hydrogen Peroxide-Driven Ignition of a Hypergolic Cyanoborohydride Ionic Liquid: A Greener Chemical Bipropellant Pair, J. Phys. Chem. Lett., 2025, 16, 1831-1839, DOI: 10.1021/acs.jpclett.4c03624. 

17. G. L. Rizzo, S. Biswas, D. Ka, X. Zheng* and R. I. Kaiser*, Untangling the Efficient Boron-initialized Hydroxyl-terminated Polybutadiene (HTPB) Combustion for High Energetic Solid Propulsion Systems, J. Phys. Chem. A, 2025, 129, 288−300, DOI: 10.1021/acs.jpca.4c06979.

16. D. Paul, S. Biswas, H. Yeom, K. Na* and R. I. Kaiser*, Unraveling the Nanosheet Zeolite-Catalyzed Combustion of Aluminum Nanoparticles-Doped exo-Tetrahydrodicyclopentadiene (JP-10) Energetic Fuel, ACS Appl. Mater. Interfaces., 2024, 16, 53938-53949, DOI: 10.1021/acsami.4c12078.

15.  S. Biswas, D. Paul, N. Dias, K. Kunzler, M. Ahmed*, M. L. Pantoya* and R. I. Kaiser*, Stress-Alteration Enhancement of the Reactivity of Aluminum Nanoparticles in the Catalytic Decomposition of exo-Tetrahydrodicyclopentadiene (JP-10), J. Phys. Chem. A, 2024, 128, 3613−3624, DOI: 10.1021/acs.jpca.4c02023.

14.  G. L. Rizzo, S. Biswas, M. L. Pantoya* and R. I. Kaiser*, Unraveling the Ignition Chemistry of Singly Levitated Aluminum Iodate Hexahydrate (AIH) Particles, Chem. Phys. Lett., 2024, 842, 141212, DOI: 10.1016/j.cplett.2024.141212.

13  S. Biswas, D. Paul, N. Dias, W. Lu, M. Ahmed*, M. L. Pantoya* and R. I. Kaiser*, Efficient Oxidative Decomposition of Jet-Fuel exo-Tetrahydrodicyclopentadiene (JP-10) by Aluminum Nanoparticles in a Catalytic Microreactor: An Online Vacuum Ultraviolet Photoionization Study, J. Phys. Chem. A, 2024, 128, 1665−1684, DOI: 10.1021/acs.jpca.3c08125.

12.  S. Biswas, K. Fujioka, I. Antonov, G. L. Rizzo, S. D. Chambreau, S. Schneider, R. Sun* and R. I. Kaiser*, Hypergolic Ionic Liquids: To Be or Not to Be? Chem. Sci., 2024, 15, 1480−1487, DOI: 10.1039/d3sc05096c.

11.  S. Biswas, D. Paul, C. He, N. Dias, M. Ahmed*, M. L. Pantoya* and R. I. Kaiser*, Counterintuitive Catalytic Reactivity of the Aluminum Oxide “Passivation” Shell of Aluminum Nanoparticles Facilitating the Thermal Decomposition of exo-Tetrahydrodicyclopentadiene (JP-10), J. Phys. Chem. Lett., 2023, 14, 9341-9350, DOI: 10.1021/acs.jpclett.3c02532.

10.  G. L. Rizzo, S. Biswas, I. Antonov, K. K. Miller, M. L. Pantoya* and R. I. Kaiser*, Exotic Inverse Kinetic Isotopic Effect in the Thermal Decomposition of Levitated Aluminum Iodate Hexahydrate Particles, J. Phys. Chem. Lett., 2023, 14, 2722-2730, DOI: 10.1021/acs.jpclett.3c00273.

9.  S. Biswas, I. Antonov, K. Fujioka, G. L. Rizzo, S. D. Chambreau, S. Schneider, R. Sun* and R. I. Kaiser*,  Unraveling the Initial Steps of the Ignition Chemistry of the Hypergolic Ionic Liquid 1-ethyl-3-methylimidazolium cyanoborohydride ([EMIM][CBH]) with Nitric Acid (HNO3) Exploiting Chirped Pulse Triggered Droplet Merging, Phys. Chem. Chem. Phys., 2023, 25, 6602-6625, DOI: 10.1039/D2CP05943F. (Cover Article)

8.  K. Mondal, S. Biswas, A. Chattopadhyay, P. Chatterjee, and T. Chakraborty*, Gas-phase Oxidation of NO2 to HNO3 by Phenol: Atmospheric Implications, ACS Earth Space Chem., 2021, 5, 2131-2141, DOI: 10.1021/acsearthspacechem.1c00167.

7.   S. Biswas, S. Mandal, P. Biswas and T. Chakraborty*, Probing the Endo/Exo Isomeric Variants of a Binary Complex of Cyclopropylamine with p-Fluorophenol by LIF Spectroscopy: A Comparative Study with Ammonia Complex, J. Phys. Chem. A, 2020, 124, 5896-5906, DOI: 10.1021/acs.jpca.0c04289.

6.  I. Bhattacharya, J. Sadhukhan, S. Biswas and T. Chakraborty*, Medium Dependent Cross-over from the Red to Blue Shift of the Donor’s Stretching Fundamental in the Binary H-Bonded Complexes of CDCl3 with Ethers and Ketones, J. Phys. Chem. A, 2020, 124, 7259-7270, DOI: 10.1021/acs.jpca.0c03946.

5.  P. Chatterjee, S. Biswas and T. Chakraborty*, Hydrogen Bonding Effects on Vibrational Dynamics and Photochemistry in Selected Binary Molecular Complexes, J. Indian Inst. Sci., 2020, 100, 155-165, DOI: 10.1007/s41745-019-00158-0.

4.  S. Biswas, I. Bhattacharya and T. Chakraborty*, Identification of an Emitting Metastable State of p-Fluorophenol-Ammonia 1:2 Complex by Laser-Induced Fluorescence Spectroscopy, J. Phys. Chem. A, 2019, 123, 10563-10570, DOI: 10.1021/acs.jpca.9b07958.

3.  DP Mukhopadhyay, S. Biswas, A. Chattopadhyay and T. Chakraborty*, Conformational Preference Determined by C–H···π Interaction of an O–H···O Hydrogen-Bonded Binary Complex of p-Fluorophenol with 2,5-Dihydrofuran: A Laser-Induced Fluorescence Spectroscopy Study, J. Phys. Chem. A, 2018, 122, 3787-3797, DOI: 10.1021/acs.jpca.8b01384.

2.  DP Mukhopadhyay, S. Biswas and T. Chakraborty*, Intermolecular vibrations and vibrational dynamics of a phenol…methanol binary complex studied by LIF spectroscopy, Chem. Phys. Lett., 2017, 674, 71–76, DOI: 10.1016/j.cplett.2017.02.059.

1.  DP Mukhopadhyay, S. Biswas and T. Chakraborty*, LIF Spectroscopy of p-Fluorophenol···Water Complex: Hydrogen Bond Vibrations, Fermi Resonance, and Vibrational Relaxation in the Excited State, J. Phys. Chem. A, 2016, 120, 9159−9169, DOI: 10.1021/acs.jpca.6b08988.

2. Systems and methods for low-temperature hydrocarbon cracking via atomically-dispersed titanium-aluminum-boron nanocatalysts (U.S. Patent Application No.: PCT/US25/43994, Date of Filing: 28/08/2025), R. I. Kaiser, S. Biswas, P. M. Godbold, A. Epshteyn, M. T. Finn and T. N. Loegel. 

1. Development of a laser assisted long-path liquid-core optical guide (LLOG) for ultra-sensitive absorbance measurements (Patent number (IN): 497136, Date of Grant: 10/01/2024), T. Chakraborty and S. Biswas.

10. Oral presentations at The International Chemical Congress of Pacific Basin Societies, Pacifichem 2025 (December 15-20), Honolulu, Hawaii, USA. “Untangling the Fundamental Steps of Single Water Droplet Freezing in a Cryogenically Cooled Simulation Chamber Bridges Atmospheric Science and Climate Solutions”

9. Poster presented at The International Chemical Congress of Pacific Basin Societies, Pacifichem 2025 (December 15-20), Honolulu, Hawaii, USA. “Singly Levitated Water Droplet Freezing in a Simulated Planetary Atmosphere”

8. Poster presented at Gordon Research Conference on Chemistry and Physics of Liquids 2025 (August 3-8) held at Holderness School in Holderness, New Hampshire, USA. “Chemistry of Levitated Droplets in Extreme Conditions: Applications Ranging from Fuel Combustion to Atmospheric Freezing”

7. Poster presented at EARTH Annual Team Meeting 2025 (March 13-14) at the University of Kansas, Lawerence, Kansas, USA. “Simulating Atmospheric Freezing of Single Aqueous Droplets to Ice in a Cryogenically Cooled Ultrasonic Levitator”

6. Oral presentations at ACS Spring 2024, (March 17-21) New Orleans, Louisiana, USA. “Unraveling the Hypergolicity and Reactivity of Ionic Liquids Exploiting the Chirped-Pulse Droplet Merging Manipulation in an Ultrasonic Levitator”

5. Oral presentations at 74th meeting on International Symposium on Molecular Spectroscopy-2019 (June 17-21) at University of Illinois, Urbana Champaign, USA.

       (a) “LIF Study for the Vibronic Structure of para-Fluorophenol...Ammonia Binary Complex”

       (b) “Dimerization Effect on HF Elimination from the Photoionized Fluorophenols”

4. Poster presented at 13thNational Symposium on Radiation and Photochemistry-2019 (February 6-9) at Visva Bharati, Santiniketan. “A Comparative LIF Study of the Vibrational Structures of OH•••O and OH•••N H-Bonded Binary Clusters of p-Fluorophenol”

3. Oral presentation at School of Chemical Sciences Symposium (February 11-12, 2019), IACS. “Laser-induced Fluorescence Spectroscopy of Cold Binary Molecular Complexes”

2. Oral presentation at One Day Discussion Meeting on Atmospheric Chemistry, November 24, 2018, organized by Indian Society for Radiation and Photochemical Sciences and IACS. “Measurement of Atmospheric Nitrous Acid Level in a Pocket of South Kolkata by a Laser-Assisted Long-path Optical Guide Apparatus”

1. Poster presented at Perspective in Teaching & Research in Physical Chemistry-2015 (August 18-22, 2015), organized by Calcutta University and IACS. “Electronic Spectra of 4-Fluorophenol Dimer: A Laser Induced Fluorescence Study”