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Vyhledávání

Dr. Debraj Gangopadhyay, PhD

mail debraj.gangopadhyayinvalid-email-name@invalid-email-domainuochb.cas.cz
mobile +420 775 383 959
telefon +420 220 183 272
Postdoktorand
Skupina Petra Bouře
Biomolekulární spektroskopie
Všechny publikace

Vybrané publikace

Bisignate Surface-Enhanced Raman Optical Activity with Analyte-Capped Colloids
M. Das D. Gangopadhyay V. Andrushchenko J. Kapitán P. Bouř
ACS Nano 19 (10): 10412–10420 (2025)
Spectroscopic detection of chiral compounds is often hampered by a low sensitivity. For Raman optical activity (ROA), the signal can be dramatically increased in surface-enhanced experiments. So far, however, reproducible surface-enhanced ROA (SEROA) spectra were obtained for a reporter molecule only via induced chirality, and the intensities were just proportional to the Raman scattering. In the present study, we show that the signal can be substantially increased if colloidal silver nanoparticles are prepared already in the presence of a chiral analyte. In this case, both the analyte’s and reporter’s bands are visible. In addition, some experiments provided bisignate SEROA patterns, thus significantly enhancing information about the molecular structure provided by this spectroscopic method. Increased electronic circular dichroism (ECD) of the capped aggregated colloids suggests that ECD and polarized Raman scattering (ECD–Raman) contribute to the monosignate SEROA intensities, while…
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Chirality Revealed by Raman Optical Activity: Principles, Applications, Recent Developments and Future Prospects
M. Das A. Kurochka P. Bouř D. Gangopadhyay
Raman Spectroscopy: Advances and Applications (D. K. Singh, A. K. Mishra, A. Materny, Eds.), Springer Series in Optical Sciences (SSOS, volume 248) , 145–166, Springer (2024)
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Chiral detection by induced surface-enhanced Raman optical activity
M. Das D. Gangopadhyay J. Šebestík L. Habartová P. Michal J. Kapitán P. Bouř
Chemical Communications 57 (52): 6388-6391 (2021)
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Aggregation-aided SERS: Selective detection of arsenic by surface-enhanced Raman spectroscopy facilitated by colloid cross-linking
M. Das D. Gangopadhyay R. Pelc R. Hadravová J. Šebestík P. Bouř
Talanta 253: 123940 (2023)
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Nejnovější publikace

A Chiroptical Switch Owing to Mercury-Crosslinked Ribonucleosides
V. Sychrovský M. Buděšínský I. Rosenberg K. Kertisová I. Kóšiová J. Fukal Y. Tanaka D. Gangopadhyay P. Bouř
Analytical Chemistry 98 (36): 26575–26582 (2026)
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Bisignate Surface-Enhanced Raman Optical Activity with Analyte-Capped Colloids
M. Das D. Gangopadhyay V. Andrushchenko J. Kapitán P. Bouř
ACS Nano 19 (10): 10412–10420 (2025)
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Chirality Revealed by Raman Optical Activity: Principles, Applications, Recent Developments and Future Prospects
M. Das A. Kurochka P. Bouř D. Gangopadhyay
Raman Spectroscopy: Advances and Applications (D. K. Singh, A. K. Mishra, A. Materny, Eds.), Springer Series in Optical Sciences (SSOS, volume 248) , 145–166, Springer (2024)
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Monitoring Conformation and Protonation States of Glutathione by Raman Optical Activity and Molecular Dynamics
M. Das D. Gangopadhyay J. Hudecová J. Kessler J. Kapitán P. Bouř
ChemPlusChem 88 (11): e202300219 (2023)
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