Novel Fluorescent Chemosensors Based on Tryptophan Unit for Cu2+ and Fe3+ in Aqueous Solution

doi:10.1007/s40242-013-3002-1

Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (4): 642-646.doi: 10.1007/s40242-013-3002-1

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Novel Fluorescent Chemosensors Based on Tryptophan Unit for Cu²⁺ and Fe³⁺ in Aqueous Solution

CHENG Peng-fei^1,2, XU Kuo-xi^1,2, YAO Wen-yong¹, KONG Hua-jie¹, KOU Li¹, MA Xiao-dan¹, WANG Chao-jie^1,2

1. Institute of Fine Chemistry and Chemical Engineering, College of Chemistry and Chemical Engineering, Kaifeng 475004, P. R. China;
2. Key Laboratory of Natural Medicinal and Immunal Engineering of Henan Province, Henan University, Kaifeng 475004, P. R. China

Received:2013-01-05 Revised:2013-04-17 Online:2013-08-01 Published:2013-07-15
Contact: XU Kuo-xi E-mail:xukx@henu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21172053, 90913001).

Abstract

Abstract:

We reported four fluorescent chemosensors containing tryptophan units. The fluorescence spectrum titration experiments suggest that chemosensors 1, 2, 3 and 4 are highly selective for Cu²⁺ and Fe³⁺over Li⁺, Na⁺, K⁺, Co²⁺, Zn²⁺, Ni²⁺, Hg²⁺ and Cr³⁺ via forming complexes with Cu²⁺ or Fe³⁺, which is confirmed by dramatical quench of fluoreseence in aqueous solution at pH 7.4, thus making all the chemosensors suitable for Cu²⁺ and Fe³⁺ fluorescent sensors.

Key words: Fluorescent, Chemosensor, Cu²⁺, Fe³⁺

CHENG Peng-fei, XU Kuo-xi, YAO Wen-yong, KONG Hua-jie, KOU Li, MA Xiao-dan, WANG Chao-jie. Novel Fluorescent Chemosensors Based on Tryptophan Unit for Cu²⁺ and Fe³⁺ in Aqueous Solution[J]. Chemical Research in Chinese Universities, 2013, 29(4): 642-646.

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Novel Fluorescent Chemosensors Based on Tryptophan Unit for Cu²⁺ and Fe³⁺ in Aqueous Solution

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