A molecular chameleon: Fluorometric to Pb2+, fluorescent ratiometric to Hg2+ and colorimetric to Ag+ ions

被引：19

作者：

Chandrasekaran, Parvathy O. ^{[1
,2
]}

Aswathy, Ajayakumar ^{[1
,2
]}

James, Kiran ^{[1
,2
]}

Kala, Kannankutty ^{[3
]}

Ragi, Mohanan T. ^{[4
]}

Manoj, Narayanapillai ^{[1
,2
]}

机构：

[1] Cochin Univ Sci & Technol, Dept Appl Chem, Kochi 22, Kerala, India

[2] Cochin Univ Sci & Technol, Interuniv Ctr Nanomat & Devices, Kochi 22, Kerala, India

[3] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan

[4] CSIR Natl Inst Interdisciplinary Sci & Technol CS, Mat Sci & Technol Div, Thiruvananthapuram 695019, Kerala, India

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2021年 / 407卷

关键词：

Sensors; Fluoroionophores; Donor-pi-acceptor; Fluorometric sensor; Ratiometric sensor; Colorimetric sensor; PHENOTHIAZINE-DERIVATIVES; ORGANIC-DYES; METAL-IONS; SENSOR; SILVER; WATER; LEAD; TRIPHENYLAMINE; COORDINATION; AGGREGATION;

D O I：

10.1016/j.jphotochem.2020.113050

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 molecular chameleon, having D-pi-A architecture with phenothiazine donor and rhodanine-3-acetic acid acceptor (PRAA) was synthesized and demonstrated its use as a fluorescent sensor to toxic metals ions. PRAA is highly selective and sensitive to Ag+, Hg2+ and Pb2+ ions and its selectivity can be tuned by solvent polarity. The chameleonic behavior is attributed to the intramolecular charge transfer and variation in the electron density at the ligand atom as a function of solvent polarity. The mechanism of binding and the stoichiometry of interaction is established by experimental and theoretical methods. How PRAA can be used as a probe in aqueous solutions for the detection of Ag+ and Hg2+ ions by using an anionic surfactant medium is convincingly established.

引用

页数：9

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