Fluorescence quenching of sulforhodamine B in novel greener solvent by metallic gold nanoparticles

被引：2

作者：

AL-Aqmar, Dalal M. ^{[1
,2
,3
]}

Othman, Hosam A. ^{[3
]}

El-Gohary, Zenat H. ^{[3
]}

Abou Kana, Maram T. H. ^{[2
]}

机构：

[1] Ibb Univ, Phys Dept, PO 70270, Ibb, Yemen

[2] Cairo Univ, Natl Inst Laser Enhanced Sci, Laser Sci & Interact Dept, PO 12613, Giza, Egypt

[3] Menoufia Univ, Fac Sci, Phys Dept, PO 32511, Shibin Al Kawm, Egypt

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2019年 / 293卷

关键词：

Fluorescence quenching; Ionic liquid; Gold nanoparticles; Cations; Anions; Sulforhodamine B; IONIC LIQUIDS; DYE; ABSORPTION; DEPENDENCE; EMISSION; SIZES;

D O I：

10.1016/j.molliq.2019.111483

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The current study deals with the studying of surface enhancing/quenching fluorescence of Sulforhodamine B (SRB) dissolved in greener ionic liquid [1-ethyl-3-methyl imidazolium acetate] (EMIM Ac) and methanol as reference by hybrid with regular spherical shape of gold nanoparticles (Au NPs). Absorption spectra and fluorescence spectra of SRB without and with Au NPs were exhibited. The fluorescence quenching of complex is explained by evaluating the scattering and absorbing efficiencies of the prepared spherical Au NPs of radius 23 nm. Theoretically, Mie theory was applied to characterize the prepared Au NPs. The molar concentration of Au NPs is (C = 2.99 x 10(-10) mol/L). Interaction of ionic liquid (EMIM Ac) with metal nanoparticles (Au NPs) produced novel featured properties and quenching of fluorescence of (SRB) laser dye. Finally, the photo-degradation of pure laser dye samples has higher values compared to laser dye complex samples with Au-NPs in both media cases EMIM Ac and MeOH. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：6

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