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Highly Selective and Sensitive Sulfonylhydrazone Type Fluorescent Probe for Rapid Detection of Mercury(II) and Its Application in Logic Gate and Adsorption
Author(s) -
Xue Songsong,
Xie Zhengfeng,
Wen Yiping,
He Jiawei,
Liu Yucheng,
Shi Wei
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202102009
Subject(s) - chemistry , detection limit , adsorption , fluorescence , selectivity , methylene blue , formaldehyde , thiophene , solvatochromism , methylene , analytical chemistry (journal) , molecule , nuclear chemistry , organic chemistry , chromatography , physics , quantum mechanics , photocatalysis , catalysis
In this study, 4‐bromotriphenylamine, 5‐formaldehyde thiophene‐2‐boronic acid and benzenesulfonyl hydrazide were used as materials to synthesize a novel type of Schiff base fluorescent probe molecule N′‐((5‐(4‐(diphenylamino)phenyl)thiophen‐2‐yl)methylene)benzenesulfonohydrazide ( BS ), and its structure was characterized by nuclear magnetic resonance (NMR) and high resolution mass spectrometry (HR‐MS). BS exhibited excellent solvatochromic effect and aggregation‐induced emission enhancement, and had rapid recognition, high selectivity and specificity for Hg 2+ , the detection limit was as low as 2.84×10 −8 M, and the response time is only 15 s. It has passed the 1 H NMR titration experiment verified its possible response mechanism. Through the good reversible performance of BS , molecular logic gate was constructed with Hg 2+ and EDTA as chemical inputs. In practical applications, polyacrylamide ( PAM ) doped BS ( PAM ‐ BS ) could achieve high‐efficiency adsorption of Hg 2+ , with a removal rate of 99.93 %, and the microscopic morphology and element changes before and after PAM ‐ BS adsorption were compared by SEM‐EDS.