Novel coumarin-based containing denrons selective fluorescent chemosesor for sequential recognition of Cu2+ and PPi

被引：26

作者：

Zhao, Chongyang ^{[1
]}

Chen, Jian ^{[1
]}

Cao, Duanlin ^{[1
]}

Wang, Jianlong ^{[1
]}

Ma, Wenbing ^{[1
]}

机构：

[1] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Shanxi, Peoples R China

来源：

TETRAHEDRON | 2019年 / 75卷 / 13期

关键词：

Fluorescent probe; Coumarin; Dendrons; Cu2+; PPi; On-off-on sensor; ON-OFF-ON; SENSITIVE DETECTION; LIVE CELLS; PROBE; COPPER; SENSOR; IONS; DESIGN; PYROPHOSPHATE; DENDRONS;

D O I：

10.1016/j.tet.2019.02.024

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

In this study, we have successfully synthesized a novel coumarin-based dendrons derivative CD and its chemical structure was characterized by H-1 NMR, C-13 NMR and ESI-HR-MS. The sensor CD showed an obvious "on-off' fluorescence quenching response toward Cu2+ with a maximum quenching efficiency of 99.8%. The CD-Cu2+ complex showed an "off-on" fluorescence enhancement response toward PPi over many competitive anions. The detection limit of the sensor CD was 0.29 x 10(-6) M to Cu2+ and 239 x 10-9M to PPi. In addition, the sensor CD showed a 1:1 binding stoichiometry to Cu2+ and the sensor CD-Cu2+ showed a 2:1 binding stoichiometry to PPi in CH3CN/HEPES buffer medium (9:1 v/v, pH = 7.2). The stable pH range of sensor CD to Cu2+ and CD-Cu2+ to PPi was from 3 to 8. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：1997 / 2003

页数：7

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