A squaraine based fl uorescent probe for mercury ion <i>via</i> coordination induced deaggregation signaling

Citation: Shuang-Yong Lin, Hui-Jun Zhu, Wen-Jian Xu, Gui-Mei Wang, Nan-Yan Fu. A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling[J]. Chinese Chemical Letters, 2014, 25(9): 1291-1295. doi: 10.1016/j.cclet.2014.04.027 shu

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

通讯作者: Nan-Yan Fu,

基金项目:
This work was financially supported by the National Science Foundation for Fostering Talents in Basic Research of the National Natural Science Foundation of China (No. J1103303) (No. J1103303)

the National Natural Science Foundation of China (No. 20702005) (No. 20702005)

Technology, China (No. 2013Y0062) (No. 2013Y0062)

Funding (Type A) from Fujian Education Department, PR China (Nos. JA12038 (Type A)

Technology Development Fund of Fuzhou University, China (No. 600902). (No. 600902)

摘要: Due to the high affinity between dithiocarbamate (DTC) and Hg²⁺, a fluorescent probe based on squaraine chromophore with DTC side arm for Hg²⁺ via coordination induced deaggregation signaling has been designed and synthesized. Squaraine has a high tendency to aggregate in aqueous solution, and such self-aggregation usually results in a dramatic absorption spectral broadening with fluorescence emission quenching. The combination of the DTC side arm of the probe with Hg²⁺ induces steric hindrance, leading to the deaggregation of the dye complex, companying with a fluorescence emission restoration. In EtOH-H₂O (20:80, v/v) solution, this "turn on" fluorescent probe has high selectivity and sensitivity toward Hg²⁺ over other metal ions, and the limit of detection for Hg²⁺ was estimated as 2.19×10^-8mol/L by 3σ/k.

关键词:

English

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

1.
Key Laboratory of Analysis and Detection for Food Safety, Ministry of Education & Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry and Chemical Engineering, and Department of Chemistry, Fuzhou University, Fuzhou 350108, China

Corresponding author: Nan-Yan Fu,

Received Date: 03 January 2014
Fund Project:

Abstract: Due to the high affinity between dithiocarbamate (DTC) and Hg²⁺, a fluorescent probe based on squaraine chromophore with DTC side arm for Hg²⁺ via coordination induced deaggregation signaling has been designed and synthesized. Squaraine has a high tendency to aggregate in aqueous solution, and such self-aggregation usually results in a dramatic absorption spectral broadening with fluorescence emission quenching. The combination of the DTC side arm of the probe with Hg²⁺ induces steric hindrance, leading to the deaggregation of the dye complex, companying with a fluorescence emission restoration. In EtOH-H₂O (20:80, v/v) solution, this "turn on" fluorescent probe has high selectivity and sensitivity toward Hg²⁺ over other metal ions, and the limit of detection for Hg²⁺ was estimated as 2.19×10^-8mol/L by 3σ/k.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

通讯作者: Nan-Yan Fu,

English

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

Corresponding author: Nan-Yan Fu,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

通讯作者: Nan-Yan Fu,

English

A squaraine based fl uorescent probe for mercury ion via coordination induced deaggregation signaling

Corresponding author: Nan-Yan Fu,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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