A highly selective "turn-on" fluorescent chemosensor based on hydroxy pyrene-hydrazone derivative for Zn2+

被引：100

作者：

Choi, Ji Young ^{[2
]}

Kim, Dabin ^{[1
]}

Yoon, Juyoung ^{[1
,2
]}

机构：

[1] Ewha Womans Univ, Dept Chem & Nano Sci, Seoul 120750, South Korea

[2] Ewha Womans Univ, Dept Bioinspired Sci WCU, Seoul 120750, South Korea

来源：

DYES AND PIGMENTS | 2013年 / 96卷 / 01期

关键词：

Zinc ion sensor; Fluorescent sensor; Pyrene; Internal charge transfer; Fluorescent probe; Off-On sensor; ZINC IONS; METAL-IONS; AQUEOUS-SOLUTION; CHARGE-TRANSFER; RECENT PROGRESS; SENSOR; DESIGN; FLUOROPHORE; BIOSENSORS; SWITCHES;

D O I：

10.1016/j.dyepig.2012.08.009

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new hydroxypyrene-based sensor 1 was designed and synthesized as a Zn2+ selective colorimetric and fluorescent chemosensor. This chemosensor showed a new UV-vis absorption peak (lambda(max) = 498 nm) with Zn2+, which can be attributed to an internal charge transfer (ICT) mechanism. In addition, Zn2+ induced a highly selective "turn-on" fluorescence enhancement at long wavelength (lambda(max) = 588 nm) in a buffered system. A significant fluorescence enhancement was observed upon the addition of Zn2+. The combination of two phenol groups on the pyrene and phenyl moieties as well as a conjugated hydrazone group can generate a binding pocket for Zn2+. These results also demonstrate that 1-hydroxypyrene-2-carboaldehyde can be a unique platform to introduce various ligands for the colorimetric and fluorescent recognition of metal ions. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：176 / 179

页数：4

共 39 条

[1] A sensitive and selective ratiometric near IR fluorescent probe for zinc ions based on the distyryl-bodipy fluorophore [J].