Photocatalytic reagentless sensor surface based on phtalocyanines and plasmonic structures

Afonyushkina, E.Y.; Shiryaeva, O.A.; Zvyagina, A.I.; Kapitanova, O.O.; Veselova, I.A.; Kalinina, M.A.

Авторы: Afonyushkina E.Yu, Shiryaeva O.A., Zvyagina A.I., Kapitanova O.O., Veselova I.A., Kalinina M.A.
Сборник: XXII Mendeleev Congress on General and Applied Chemistry, October 7-12,2024, Federal Territory “Sirius”, Russia. Book of abstracts in 7 volumes
Серия: -
Том: 5
Тезисы
Год издания: 2024
Место издания: Admiral Print Moscow
Первая страница: 76
Последняя страница: 76
Аннотация: One of the promising directions of modern bioanalytical chemistry is the reagentless optical sensor elements (no reagents need to be added externally except for analytes) development based on enzymes mimetics for the determination of a wide range of biologically active substances. Surface enhanced Raman spectroscopy (SERS) is attracting great interest in the field of bioanalysis due to its high sensitivity, accuracy, ease of sample preparation and non-destructive nature. In the present work, we have developed an ultrathin reagentless photocatalytic SERS-sensor system based on the sodium salt of zinc salt of phthalocyanine, which was immobilized on a graphene oxide modified surface, and silver nanoparticles. The photocatalytic activity of zinc phthalocyaninate in reactions of oxidation of and TMB under visible light and the possibility of detection of oxidized forms of these biocatalytic indicators by SERS method were demonstrated.
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