Linear Schiff-base fluorescence probe with aggregation-induced emission characteristics for Al3+ detection and its application in live cell imaging

被引:62
作者
Wen, Xiaoye [1 ]
Fan, Zhefeng [1 ]
机构
[1] Shanxi Normal Univ, Dept Chem, Linfen 041004, Peoples R China
关键词
Fluorescent probe; Aggregation-induced emission; Al3+; Schiff base; Live cell imaging; AIE ACTIVE PROBE; TURN-ON; SELECTIVE DETECTION; SENSITIVE DETECTION; AQUEOUS-SOLUTION; METAL-IONS; CHEMOSENSOR; ALUMINUM; SENSOR; HG2+;
D O I
10.1016/j.aca.2016.09.036
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A simple Schiff-base derivative with salicylaldehyde moieties as fluorescent probe 1 was reported by aggregation-induced emission (AIE) characterization for the detection of metal ions. Spectral analysis revealed that probe 1 was highly selective and sensitive to Al3+. The probe 1 was also subject to minimal interference from other common competitive metal ions. The detection limit of Al3+ was 0.4 mu M, which is considerably lower than the World Health Organization standard (7.41 mu M), and the acceptable level of Al3+ (1.85 mu M) in drinking water. The Job's plot and the results of H-1-NMR and FT-IR analyses indicated that the binding stoichiometry ratio of probe 1 to Al3+ was 1:2. Probe 1 demonstrated a fluorescence-enhanced response upon binding with Al3+ based on AIE characterization. This response was due to the restricted molecular rotation and increased rigidity of the molecular assembly. Probe 1 exhibited good biocompatibility, and Al3+ was detected in live cells. Therefore, probe 1 is a promising fluorescence probe for Al3+ detection in the environment. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:75 / 84
页数:10
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