Synergistic fluorescence enhancement of Tb with aromatic monocarboxylic acids and TOPO-Triton X-100: role of Triton X-100 in synergism

被引：57

作者：

Panigrahi, BS ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Reactor Operat Div, Kalpakkam 603102, Tamil Nadu, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2000年 / 56卷 / 07期

关键词：

fluorescence enhancement; terbium substituted benzoic acids; Triton X-100; micelle;

D O I：

10.1016/S1386-1425(99)00257-7

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Fluorescence enhancement of Tb3+ has been studied, using substituted benzoic acids as ligands. These ligands enhance the fluorescence of Tb3+ by about three orders of magnitude. The enhancement is observed due to ligand sensitized fluorescence. The fluorescence of Tb3+ in these complexes is synergistically enhanced by the addition of trioctylphosphine oxide (TOPO) in Triton X-100. The synergism displayed by TOPO was observed only when Triton X-100 micellar medium was used. TOPO dissolved in SDS/DTAB micellar medium did not result in synergistic fluorescence enhancement of Tb3+. These observations are discussed in detail and the synergism displayed by TOPO is rationalized on the basis of the structure of the surfactants. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：1337 / 1344

页数：8

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