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A novel diarylethene‐based fluorescence sensor with a benzohydrazide unit for the detection of Zn 2+
Author(s) -
Lu Mengmeng,
Qiu Shouyu,
Cui Shiqiang,
Pu Shouzhi
Publication year - 2020
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.4113
Subject(s) - chemistry , diarylethene , fluorescence , detection limit , photochromism , selectivity , tetrahydrofuran , photochemistry , stoichiometry , irradiation , analytical chemistry (journal) , chromatography , optics , organic chemistry , physics , solvent , nuclear physics , catalysis
A novel fluorescent sensor on the basis of diarylethene and benzohydrazide unit was successfully synthesized. Its photochromic and fluorescent switching properties have been studied in detail by the irradiation of UV‐visible (UV‐Vis) lights and the stimulus of Zn 2+ /EDTA. The sensor exhibited high sensitivity and selectivity toward Zn 2+ in tetrahydrofuran, which is not interfered by other cations, especially of congener Cd 2+ . The fluorescence intensity enhanced 84 times along with a 44‐nm blue shift of the emission peak after adding Zn 2+ . The stoichiometric ratio between the sensor and Zn 2+ was 1:1, and the limit of detection (LOD) was calculated as 5.60 × 10 −9 mol L −1 . Besides, the sensor was applied in the detection of practical water samples with high accuracy.