|
Эта публикация цитируется в 1 научной статье (всего в 1 статье)
Нанофотоника
IR luminescence of polyfunctional associates of indocianine green and Ag$_{2}$S quantum dots
T. S. Kondratenko, M. S. Smirnov, O. V. Ovchinnikov, I. G. Grevtseva, A. N. Latyshev Voronezh State University
Аннотация:
In this work, manifestations of IR luminescence sensitization of Indocyanine Green during conjugation with colloidal Ag$_{2}$S quantum dots with an average size of 2.2 and 3.7 nm, passivated with thioglycolic acid molecules (Ag$_{2}$S/TGA QDs) are studied using absorption and luminescence techniques. The possibility of enhancing luminescence in the dye monomer band (820 nm) under excitation at 660 nm by a factor of 6 in the presence of Ag$_{2}$S/TGA QDs (2.2 nm) due to a decrease in the polymethine dye chain movement via coordination interaction with QDs was demonstrated. The way to switch-over from the first therapeutic window of biological tissue transparency (NIR-I, 700–950 nm) to the second (NIR-II, 1000–1700 nm), based on sensitization of IR luminescence of Ag$_{2}$S/TGA QDs with an average size of 3.7 nm in the region of 1040 nm due to of resonance non-radiative transfer of excitation energy from Ag$_{2}$S/TGA (2.2 nm) QDs at 900 nm to Ag$_{2}$S/TGA QDs (3.7 nm) via the J-aggregate of ICG dye, which acts as an exciton bridge.
Ключевые слова:
J-aggregate, non-radiative decay, exciton absorption.
Поступила в редакцию: 18.01.2020 Исправленный вариант: 18.01.2020 Принята в печать: 20.04.2020
Образец цитирования:
T. S. Kondratenko, M. S. Smirnov, O. V. Ovchinnikov, I. G. Grevtseva, A. N. Latyshev, “IR luminescence of polyfunctional associates of indocianine green and Ag$_{2}$S quantum dots”, Оптика и спектроскопия, 128:8 (2020), 1200; Optics and Spectroscopy, 128:8 (2020), 1278–1285
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/os353 https://www.mathnet.ru/rus/os/v128/i8/p1200
|
Статистика просмотров: |
Страница аннотации: | 33 | PDF полного текста: | 9 |
|