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A Heterogeneous Nanoscale Covalent Organic Framework Fluorescence Probe for Sensitive Detection of Hydrogen Sulfide
Author(s) -
Ge Xuan,
Zhang Houyong,
Zhang Chengxiao,
Du Mingyue
Publication year - 2021
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202100049
Subject(s) - detection limit , hydrogen sulfide , fluorescence , selectivity , covalent bond , nanoscopic scale , chemistry , covalent organic framework , sulfide , inorganic chemistry , photochemistry , nanotechnology , materials science , chromatography , organic chemistry , catalysis , sulfur , physics , quantum mechanics
New strategies for highly selective and sensitive detection of highly toxic environmental pollutants are still a pressing need. Here, through Cu 2+ metalated porous nanoscale covalent organic framework (NCOF), a novel heterogeneous NCOF fluorescence probe has been synthesized for sensitive and selectivity detection of hydrogen sulfide (H 2 S). Upon H 2 S addition, the Cu 2+ released from the CuCOF, accompanied by the fluorescence recovered of COF. As far as we know, NCOF has not been reported as fluorescence probe for H 2 S detection. The as‐prepared nano CuCOF displays an excellent sensitive response to H 2 S with a detection limit of 10 nM. In addition, such heterogeneous fluorescence probe exhibited high selectivity towards to H 2 S relative to other thiols and anionic species. Moreover, the detection of H 2 S was achieved successfully in different actual water samples.