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Dr. Debraj Gangopadhyay, PhD

Dr. Debraj Gangopadhyay, PhD

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

Vybrané publikace

Aggregation-aided SERS: Selective detection of arsenic by surface-enhanced Raman spectroscopy facilitated by colloid cross-linking
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)
Arsenic of natural or industrial origin often occurs in water and makes it impotable. Due to its high toxicity, very sensitive detection is required. In the present study an ultra-sensitive arsenite (As3+) sensing is reported, based on aggregation-aided surface-enhanced Raman scattering (AA-SERS) of modified silver colloids. SERS intensity of mercapto-compounds attached to the colloidal silver nanoparticles surface is greatly increased in the presence of arsenic. Colloid aggregation is facilitated by cross-linking; a meshwork consisting of arsenic atoms and glutathione bridges is formed, as indicated by UV–Vis absorption spectroscopy, TEM and Raman imaging. The best 2-mercaptopyridine reporter molecule makes it possible to directly detect As3+ at concentrations as low as 0.5 ppb, which is better than achieved by the SERS technique so far.
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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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Nejnovější publikace

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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Studies of temperature dependent Raman spectroscopy of two nematic liquid crystalline compounds of homologous series
J. Basumatary D. Gangopadhyay A. Nath K. D. Thingujam
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 300: 122898 (2023)
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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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