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Poly(vinyl alcohol)–Carbon Nanodots Fluorescent Hydrogel with Superior Mechanical Properties and Sensitive to Detection of Iron(III) Ions
Author(s) -
Shao Jia,
Yu Qijian,
Wang Sui,
Hu Yufang,
Guo Zhiyong,
Kang Kai,
Ji Xueping
Publication year - 2019
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201900326
Subject(s) - vinyl alcohol , fluorescence , materials science , detection limit , selectivity , quenching (fluorescence) , nanodot , carbon fibers , chemical engineering , nanotechnology , composite material , chemistry , organic chemistry , composite number , catalysis , chromatography , polymer , optics , physics , engineering
A high‐strength fluorescent hydrogel is prepared by physical cross‐linking of carbon nanodots (CNDs) with poly(vinyl alcohol) (PVA). The stretching and compression of the PVA hydrogel are improved with CNDs by 176% and 64%, respectively. It still has excellent self‐healing behaviors without adding other healing agents. In addition, the search for rapid detection of heavy metals is still a huge challenge. The resulting hydrogel exhibits fluorescence quenching in the presence of Fe 3+ by the fluorescence characteristics of CNDs, which has high selectivity and sensitivity. The PVA‐CNDs fluorescent hydrogel can be used as a solid detection platform for Fe 3+ , where the detection limit is found to be 10 µ m for Fe 3+ by fluorescence studies.
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