Study of the interaction of β-carbolines with gold nanoparticles and its application to turn-on fluorescence detection of silver ion

被引：6

作者：

Amjadi, Mohammad ^{[1
]}

Farzampour, Leila ^{[1
]}

Manzoori, Jamshid L. ^{[1
]}

机构：

[1] Univ Tabriz, Fac Chem, Dept Analyt Chem, Tabriz 5166616471, Iran

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2014年 / 286卷

关键词：

Fluorescence resonance energy transfer; Gold nanoparticles; Quenching; Harmine; Harmane; RESONANCE ENERGY-TRANSFER; SULFIDE QUANTUM DOTS; ACID-BASE KINETICS; EXCITED-STATE; SIZE; EQUILIBRIA; ALKALOIDS; CHEMISTRY; CONSTANTS; CATALYSIS;

D O I：

10.1016/j.jphotochem.2014.04.011

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 interaction of harmine and harmane, two important members of beta-carboline alkaloids, with gold nanoparticles (Au NPs) was investigated by fluorescence spectroscopy. Au NPs strongly quench the intrinsic fluorescence of these alkaloids as a result of resonance energy transfer. The Stern-Volmer plots were evaluated and corresponding Stern-Volmer quenching constants were found to be 5.3 x 10(9) and 6.4 x 10(9) M-1 for harmine and harmane, respectively. The analytical applicability of beta-carboline-Au NP systems was explored and found that they can be used for turn-on fluorescence detection of silver ions at ultra-trace levels. Using harmine-Au NP system, the calibration graph for silver ion was linear in the range of 9.0-470 mu g L-1 with a limit of detection of 5.0 mu g L-1. The developed method was applied to the determination of silver in real water samples. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：16 / 21

页数：6

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