Adsorption kinetics of a fluorescent dye in a long chain fatty acid matrix

被引：19

作者：

Hussain, Syed Arshad ^{[1
]}

Banik, Soma ^{[1
,2
]}

Chakraborty, S. ^{[1
]}

Bhattacharjee, D. ^{[1
]}

机构：

[1] Tripura Univ, Dept Phys, Suryamaninagar 799130, Tripura, India

[2] Womens Coll, Dept Phys, Agartala 799001, Tripura, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 79卷 / 05期

关键词：

Langmuir monolayer; Pressure-area isotherm; Reaction kinetics; FIM; Rhodamine; LANGMUIR-BLODGETT-FILMS; RHODAMINE-B; MONOLAYERS; WATER; EVOLUTION;

D O I：

10.1016/j.saa.2011.05.025

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

This work reports the adsorption kinetics of a highly fluorescent laser dye rhodamine B (RhB) in a preformed stearic acid (SA) Langmuir monolayer. The reaction kinetics was studied by surface pressure-time (pi-t) curve at constant area and in situ fluorescence imaging microscopy (FIM). Increase in surface pressure (at constant area) with time as well as increase in surface coverage of monolayer film at air-water interface provide direct evidence for the interaction. ATR-FTIR spectra also supported the interaction and consequent complexation in the complex films. UV-vis absorption and Fluorescence spectra of the complex Langmuir-Blodgett (LB) films confirm the presence of RhB molecules in the complex films transferred onto solid substrates. The outcome of this work clearly shows successful incorporation of RhB molecules into SA matrix without changing the photophysical characteristics of the dye, thus making the dye material as LB compatible. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1642 / 1647

页数：6

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