The formation and luminescent properties of hybrid associates of colloidal Ag2S quantum dots with J-aggregates of trimethinecyanine dye

被引：2

作者：

Kondratenko T.S. ^{[1
]}

Ovchinnikov O.V. ^{[1
]}

Grevtseva I.G. ^{[1
]}

Smirnov M.S. ^{[1
]}

机构：

[1] Voronezh State University, Universitetskaya pl. 1, Voronezh

来源：

Nanotechnologies in Russia | 2016年 / 11卷 / 1-2期

关键词：

Gelatin; Luminescent Property; Optical Absorption Spectrum; Gelatin Film; Electronic Excitation Energy;

D O I：

10.1134/S1995078016010080

中图分类号：

学科分类号：

摘要：

Spectral patterns of hybrid association in the mixture of colloidal Ag2S quantum dots (QDs) with an average size of 2.5 to 0.3 nm with J-aggregates of a pyridinium salt of 3,3’-di(γ-sulphopropyl)-9-ethyl-4,5,4’,5-dibenzothiacarbocyanine betaine (Dye), prepared by the sol-gel method in gelatin, are investigated. A conclusion about the preferential formation of cis-J-aggregates in the hybrid associates of Dye with Ag2S QDs is made. The effect of photosensitization of IR luminescence (1000–1300 nm) of colloidal Ag2S QDs by J-aggregates of Dye is revealed. On the basis of the results, a photosensitization scheme implying the resonance nonradiative transfer of the electronic excitation energy from cis-J-aggregates to the recombination luminescence centers of Ag2S QDs is suggested. © 2016, Pleiades Publishing, Ltd.

引用

页码：85 / 91

页数：6

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