A highly sensitive, single selective, real-time and "turn-on'' fluorescent sensor for Al3+ detection in aqueous media

被引：113
作者：
Shi, Xiaoyan [1 ]
Wang, Huan [1 ]
Han, Tianyu [1 ]
Feng, Xiao [1 ]
Tong, Bin [1 ]
Shi, Jianbing [1 ]
Zhi, Junge [2 ]
Dong, Yuping [1 ]
机构：
[1] Beijing Inst Technol, Coll Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Coll Chem, Beijing 100081, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 36期
基金：
高等学校博士学科点专项科研基金;
关键词：
AGGREGATION-INDUCED EMISSION; ALZHEIMERS-DISEASE; CONJUGATED POLYELECTROLYTES; DEVELOPMENTAL ALTERATIONS; ALUMINUM ACCUMULATION; LIGHT-EMISSION; CAFFEIC ACID; IRON; COPPER; PROBE;
D O I：
10.1039/c2jm33393g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A "turn-on'' fluorescent sensor, sodium 4,4',4 ''-(1H-pyrrole-1,2,5-triyl)tri-benzoate (Py(PhCOO-Na)(3)), has been prepared for the detection of Al3+ in aqueous solution. The detection mechanism, as well the mechanism specific to Al3+, was studied by fluorescence spectroscopy, UV-vis spectroscopy and dynamic light scattering (DLS) measurement. Py(PhCOONa)(3) exhibited an aggregation-induced emission (AIE) characteristic and was found to show a specific affinity to Al3+, as indicated by the enhanced and bathochromically shifted emission of the AIE fluorogen. Upon binding Al3+, a significant fluorescence enhancement with a turn-on ratio of over 10-fold was triggered by the AIE process. Moreover, this sensor is highly selective for Al3+ over other metal ions with a detection limit of 5 mu M and a quantitative detection range of 5-120 mu M, and is able to be used in the determination of Al3+ in drinking water. The time-response investigation indicates that the emission intensity of (Py(PhCOO-)(3)) can be quickly boosted to reach the maximum intensity in less than 10 s upon titration of Al3+.
引用
收藏
页码：19296 / 19302
页数：7
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