Mutual modification of silver-nanoparticle plasmon resonances and the absorptive properties of polymethine-dye molecular layers on a sapphire surface

被引：11

作者：

Toropov, N. A. ^{[1
]}

Kaliteevskaya, E. N. ^{[1
]}

Leonov, N. B. ^{[1
]}

Vartanyan, T. A. ^{[1
]}

机构：

[1] St Petersburg Natl Res Univ Informat Technol Mech, St Petersburg 197101, Russia

来源：

OPTICS AND SPECTROSCOPY | 2012年 / 113卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

METAL NANOPARTICLES; PARTICLES;

D O I：

10.1134/S0030400X12120090

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Extinction spectra of a hybrid material comprised of molecular layers of polymethine dyes and granulated silver films preliminarily deposited onto sapphire substrates are studied experimentally. Specific features of the dye layer composition and broadening of plasmon absorption bands are discussed. In hybrid samples, both an increase and a decrease in the silver-nanoparticle plasmon resonance frequency upon spreading of dyes have been observed, as well as a considerable increase in the dye molecule absorption. Possible mechanisms of the phenomena are discussed. DOI: 10.1134/S0030400X12120090

引用

页码：616 / 620

页数：5

共 12 条

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