A Turn-on Fluorescent Sensor for Pyrophosphate Based on the Disassembly of Cu2+-Mediated Perylene Diimide Aggregates

被引：149

作者：

Feng, Xueling ^{[1
]}

An, Yuxiu ^{[1
]}

Yao, Zhiyi ^{[1
]}

Li, Chun ^{[1
]}

Shi, Gaoquan ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2012年 / 4卷 / 02期

基金：

中国国家自然科学基金;

关键词：

pyrophosphate; perylene diimide; fluorescence; biosensor; aggregation; ANION RECOGNITION; CONJUGATED POLYELECTROLYTE; INORGANIC PYROPHOSPHATE; WATER; COORDINATION; CHEMOSENSORS; LUMINESCENT; SELECTIVITY; RECEPTOR; PROBE;

D O I：

10.1021/am201616r

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A complex between an anionic perylene diimide derivative (PDI-GlyAsp) and cupric ion has been prepared and applied to be turn-on fluorescent probe for the detection of pyrophosphate (PPi) in 100% aqueous solution. The complex formation process and PPi detection have been studied by absorption and emission spectroscopy. It was confirmed that the introduction of cupric ion into PDI-GlyAsp solution resulted in the assembly of PDI-GlyAsp into PDI-GlyAsp/Cu2+ aggregates, leading to the fluorescence quenching of PDI-GlyAsp. Upon addition of PPi into the above solution led to the disassembly of the aggregates due to the competitive binding of PPi with Cu2+ in the PDI-GlyAsp/Cu2+ complex, and a recovery of PDI-GlyAsp emission was observed. Therefore, the PDI-GlyAsp/Cu2+ complex can be applied as a turn on fluorescent probe for detecting PPi with high selectivity and sensitivity.

引用

页码：614 / 618

页数：5

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