Characterization of a newly synthesized fluorescent benzofuran derivative and usage as a selective fiber optic sensor for Fe(III)

被引：131
作者：
Oter, Ozlem
Ertekin, Kadriye [1 ]
Kirilmis, Cumhur
Koca, Murat
Ahmedzade, Misir
机构：
[1] Dokuz Eylul Univ, Fac Arts & Sci, Dept Chem, TR-35160 Izmir, Turkey
[2] Firat Univ, Fac Arts & Sci, Dept Chem, TR-23169 Elazig, Turkey
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 122卷 / 02期
关键词：
benzofuran derivative; iron sensor; Fe3+; fluorescence spectroscopy;
D O I：
10.1016/j.snb.2006.06.010
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this work photoluminescent properties of Fe3+ selective organic fluoroionophore, benzofuran derivative bis(7-methoxybenzofuran-2-il)ketoxime (BFK) was investigated in different solvents (dichloromethane, tetrabydrofuran, toluene and ethanol) and in polymer matrices of polyvinylchloride (PVC) and ethyl cellulose (EC) by absorption and emission spectrometry. The photophysical constants such as quantum yield, Stock's shift and molar extinction coefficient of the BFK dye were declared. The immobilized dye was found to exhibit a selective response for Fe3+ in direction of decrease in fluorescence intensity. The response to Fe3+ ions was evaluated in terms of the effect of pH and cross sensitivity to Fe2+ and other cations. The response time, reversibility, limit of detection, linear concentration range for the metal ion and repeatability characteristics of the sensing reagent also have been studied. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：450 / 456
页数：7
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