Dr. Palas Roy
Department : Basic Sciences
Professional Summary
2023 Faculty Advisor (MSc Chemistry, ITEP Chemistry and BTech), IITBBS
2023 School Exam Coordinator (School of Basic Sciences) for Spring end-semester BTech exam, IITBBS
2023 Liaison Officer for Hon’ble MP Shri Biplab Kumar Deb during IIT Council Meeting 2023 at IITBBS
2023 Faculty Coordinator for G20-Open Day Exhibition at IITBBS
2023 Faculty Trainer for improving presentation skill of final year PhD students at IIT Bhubaneswar
2016-Till date Reviewed research papers from different international Physical Chemistry journals
2016 Involved in organising the international conference on ‘Optics within Life sciences 2016’ at TIFR
2013-17 Demonstrated basic science experiments using femtosecond laser systems to school students during the annual science outreach programme ‘Frontiers of Sciences’ at TIFR-Mumbai
Publications
1Palas Roy, Andy S. Sardjan, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; “Excited State Dynamics in Unidirectional Photochemical Molecular Motors” J. Am. Chem. Soc. (2024) (Just Accepted)
2Palas Roy, ≠ Andy S. Sardjan,≠ Wojciech Danowski, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; “Control of Photoconversion Yield in Unidirectional Photomolecular Motors by Push-Pull Substituents” J. Am. Chem. Soc. X. xxxx (2023) DOI: 10.1021/jacs.3c06070 (≠equal contribution)
3Pragya Verma, Mariusz Tasior, Palas Roy, Stephen R. Meech@, Daniel T. Gryko, and Eric Vauthey@; “Excited-state Symmetry Breaking in Quadrupolar Pull-push-pull Molecules: Dicyanovinyl vs. Cyanophenyl Acceptors” Phys. Chem. Chem. Phys. (2023 Advance Article)
4Palas Roy, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; ‘Ultrafast motion in a third generation photomolecular motor’ Nature Communications 14. 1253 (2023) DOI: 10.1038/s41467-023-36777-6 (Editors’ Highlight)
5Kiri Addison, Palas Roy, Giovanni Bressan, Karolina Skudaite, Josh Robb, Philip B. C. Page, Eleanor K. Ashworth, James N. Bull and Stephen R. Meech@; “Photophysics of the Red-form Kaede Chromophore†Chemical Science, (2023, Just Accepted) DOI: 10.1039/D3SC00368J
6Palas Roy, Faisal Al-Kahtani, Andrew N. Cammidge, and Stephen R. Meech@; “Solvent Tuning Excited State Structural Dynamics in a Novel Bianthrylâ€, J. Phys. Chem. Lett. X, XX (2023) DOI: 10.1021/acs.jpclett.2c03469
7Palas Roy, Gokul T. Anandan, Nagaraj Nayak, Anil Kumar, and Jyotishman Dasgupta@; “Raman Snapshots of Side-Chain Dependent Polaron Dynamics in PolyThiophene Films†J. Phys. Chem. B X, XX (2023). DOI: 10.1021/acs.jpcb.2c06185
8Giovanni Bressan, Michael Jirasek, Palas Roy, Harry Anderson, Stephen R. Meech@ and Ismael Heisler@;“Population and Coherence Dynamics in Large Conjugated Porphyrin Nanoringsâ€, Chem. Sci. 13, 9624 (2022). DOI: 10.1039/D2SC01971J
9Palas Roy, Andy S. Sardjan, Arjen Cnossen, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; “Excited State Structure Correlates with Efficient Photoconversion in Unidirectional Motors†J. Phys. Chem. Lett. 12, 3367 (2021). DOI: 10.1021/acs.jpclett.1c00710
10Palas Roy, Giovanni Bressan, Jacob Gretton, Andrew N. Cammidge, and Stephen R. Meech@; “Ultrafast Excimer Formation and Solvent Controlled Symmetry Breaking Charge Separation in the Excitonically Coupled Subphthalocyanine Dimer†Angew. Chem. Int. Ed. 60, 10568 (2021). DOI: 10.1002/anie.202101572
11Palas Roy, Andy S. Sardjan, Wojciech Danowski, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; “Photophysics of First-Generation Photomolecular Motors: Resolving Roles of Temperature, Friction, and Medium Polarity†J. Phys. Chem. A. 125, 1711 (2021). DOI: 10.1021/acs.jpca.0c11050
12Palas Roy@ “Hot-carriers in Organic Photovoltaics†Pure Appl. Chem. 93, 223 (2021). DOI: 10.1515/pac-2020-1001 (Invited article)
13Dale Green, Palas Roy, Christopher R. Hall, James N. Iuliano, Garth A. Jones, Andras Lukacs, Peter J. Tonge and Stephen R. Meech@; “Excited State Resonance Raman of Flavin Mononucleotide: Comparison of Theory and Experiment†J. Phys. Chem. A. 125, 6171 (2021). DOI: 10.1021/acs.jpca.1c04063
14Palas Roy@, and Jyotishman Dasgupta; “Temporal Probing of Excitons in Organic Semiconductors†Pure Appl. Chem. 92, 707 (2020). DOI:10.1515/pac-2018-1230 (Invited article)
15Andy S. Sardjan, Palas Roy, Giovanni Bressan, Laura Comprido, Wesley R. Browne, Ben. L. Feringa@ and Stephen R. Meech@; “Ultrafast Excited State Dynamics in a First Generation Photomolecular Motor†ChemPhysChem 21, 594 (2020). DOI: 10.1002/cphc.201901179 (Journal Cover Feature)
16Shawn Irgen-Gioro, Palas Roy, Suyog Padgaonkar, and Elad Harel@; “Low Energy Excited State Vibrations Revealed in Conjugated Co-Polymer PCDTBT†J. Chem. Phys. 152, 044201 (2020). DOI:10.1063/1.5132299
17KC Krishnapriya≠, Palas Roy≠, Ulrike Salzner, Jyotishman Dasgupta@ and Satish Patil@; “Spin Density Encodes Intramolecular Singlet Fission in Pentacene Dimers†Nat. Commun. 10, 1 (2019). DOI: 10.1038/s41467-018-07736-3 (≠equal contribution)
18Palas Roy, Shreetama Karmakar, and Jyotishman Dasgupta@; “Femtosecond Stimulated Raman Spectroscopy†Book Chapter-9 in “Molecular and Laser Spectroscopy: Advances and Applications†by Prof. V. P. Gupta, Elsevier 193-215 (2018). DOI:10.1016/B978-0-12-849883-5.00009-7
19Palas Roy, Ajay Jha, Vineeth B. Yasarapudi, Thulasi Ram, Boregowda Puttaraju, Satish Patil and Jyotishman Dasgupta@; “Ultrafast bridge planarization in donor-π-acceptor copolymers drives intramolecular charge transfer†Nat. Commun. 8, 1 (2017). DOI: 10.1038/s41467-017-01928-z
20Melby Johny, K. Vijayalakshmi, Ankita Das, Palas Roy, Aseem Mishra and Jyotishman Dasgupta@; “Modulating Phe-Phe dipeptide aggregation landscape by covalent attachment of an Azobenzene photoswitch†Chem. Commun. 53, 9348 (2017). DOI: 10.1039/C7CC04106C
21Tushita Mukhopadhyay, Boregowda Puttaraju, Palas Roy, Jyotishman Dasgupta, Andreas Meyer, Alexander Rudnick, Steffen Tscheuschner, Frank-Julian Kahle, Anna Köhler, and Satish Patil@; “Facile Synthesis and Chain-length Dependent Optical and Structural Properties of Diketopyrrolopyrrole-based Oligomers†Chem. Eur. J. 23, 13718 (2017). DOI: 10.1002/chem.201702131
22Palas Roy, Ajay Jha, and Jyotishman Dasgupta@; “Photoinduced Charge Generation Rates in Soluble P3HT:PCBM Nano-aggregates Predict the Solvent-dependent Film Morphology†Nanoscale 8, 2768 (2016). DOI: 10.1039/C5NR06445G
12023 Time-resolved Vibrational Spectroscopy; Invited Talk on ‘Molecular Movies: Ultrafast Raman Snapshots of Unidirectional Motors?’
22019 IUPAC World Chemistry Congress, Paris; Posters presentation “Probing the Fate of Exciton in Organic Semiconductorsâ€.
32016 International Conference on Hybrid and Organic Photovoltaics-2016, Swansea, UK; Oral presentation “Tracking Exciton Dynamics in Low-Bandgap Conjugated Polymers using Femtosecond Stimulated Raman Spectroscopyâ€.
42016 International Conference on Optics Within Life Sciences, TIFR/IITB, India
52014 Advances in Spectroscopy and Ultrafast Dynamics-2014 symposium, IACS, Kolkata, India; Poster presentation “Capturing Photoinduced Charge Transfer States of P3HT:PCBM Mixtures in Solutionâ€.
62012 Workshop at 23rd International Conference on Raman Spectroscopy, IISC-Bangalore, India
12023 Kaleidoscope: A Discussion Meeting in Chemistry; Invited Talk on ‘Can Ultrafast Science Help Optimise Unidirectional Motor Performance?’
22022 Chemistry Research Day, UEA; Oral presentation ‘Ultrafast Charge Separation in Covalently Linked Anthracene Dimer’
32021 Chemistry Research Day, UEA; Oral presentation “Ultrafast Raman Snapshot of Unidirectional Motors in Motionâ€.
42021 Chemistry Seminar Series, UEA; Oral presentation “Ultrafast photophysics of molecular dimersâ€.
52020 Chemistry Research Day, UEA; Oral presentation “Excited state structural correlation for efficient photoconversion in artificial motorsâ€.
62016 TIFR-DCS annual talks, India; Posters presentations “Ultrafast Exciton and Charge Dynamics in Organic Semiconductors†and “Tracking Singlet Fission in Semiconducting Organic Nanoparticlesâ€.
72016 National Conference on Recent Advances in Optical Sciences-II, Hyderabad, India; Oral presentation “Photoinduced Charge Generation Rates in Soluble P3HT:PCBM Nano-aggregates Predict the Solvent Dependent Film Morphologyâ€.
82016 National Workshop on Fluorescence and Raman Techniques, TIFR, India
92016 Modern Trends in Electron Transfer Chemistry: From Molecular Electronics to Devices, ICTS, Bangalore, India; Poster presentation “Tracking Exciton Dynamics in Low Band-gap Conjugated Polymers using Femtosecond Stimulated Raman Spectroscopyâ€.
102013 FCS Satellite Confocal Workshop-2013, IISC-Bangalore, India