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Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules

Two organic molecules, pyridoxal hydrazide (PAH) and salicylaldehyde based Rhodamine B hydrazone (RBS) were integrated into zeolitic imidazolate framework-8 (ZIF-8) to give composites, namely PAH/ZIF-8 and RBS/ZIF-8. The organic molecules and ZIF-8 are proposed to be assembled via hydrogen bonds and...

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Autores principales: Zhang, Jun, Zhao, Xiuyang, Liu, Xuefeng, Dong, Chuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9051611/
https://www.ncbi.nlm.nih.gov/pubmed/35498443
http://dx.doi.org/10.1039/c9ra10695b
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author Zhang, Jun
Zhao, Xiuyang
Liu, Xuefeng
Dong, Chuan
author_facet Zhang, Jun
Zhao, Xiuyang
Liu, Xuefeng
Dong, Chuan
author_sort Zhang, Jun
collection PubMed
description Two organic molecules, pyridoxal hydrazide (PAH) and salicylaldehyde based Rhodamine B hydrazone (RBS) were integrated into zeolitic imidazolate framework-8 (ZIF-8) to give composites, namely PAH/ZIF-8 and RBS/ZIF-8. The organic molecules and ZIF-8 are proposed to be assembled via hydrogen bonds and π–π stacking in the composites. The mass fraction of PAH and RBS in the composites was calculated to be 21.86% and 29.3%. The fluorescence of PAH/ZIF-8 is quenched regularly by Cu(2+). The detection limit for Cu(2+) was calculated to be 1.42 nM for PAH/ZIF-8, which is one order of magnitude lower than that of PAH. The detection limit for Cu(2+) was determined to be 0.8 μM for RBS/ZIF-8, which is three times lower than that of RBS. The two composites both display high selectivity to Cu(2+) over competing metal ions. The PAH/ZIF-8 fluorescent sensor was successfully applied to Cu(2+) determination in environmental water. PAH/ZIF-8 exhibits excellent cell membrane permeability and low cytotoxicity in cellular imaging. The enhanced chemical sensor was designed by introducing small molecules into ZIF-8 for the specific recognition of Cu(2+).
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spelling pubmed-90516112022-04-29 Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules Zhang, Jun Zhao, Xiuyang Liu, Xuefeng Dong, Chuan RSC Adv Chemistry Two organic molecules, pyridoxal hydrazide (PAH) and salicylaldehyde based Rhodamine B hydrazone (RBS) were integrated into zeolitic imidazolate framework-8 (ZIF-8) to give composites, namely PAH/ZIF-8 and RBS/ZIF-8. The organic molecules and ZIF-8 are proposed to be assembled via hydrogen bonds and π–π stacking in the composites. The mass fraction of PAH and RBS in the composites was calculated to be 21.86% and 29.3%. The fluorescence of PAH/ZIF-8 is quenched regularly by Cu(2+). The detection limit for Cu(2+) was calculated to be 1.42 nM for PAH/ZIF-8, which is one order of magnitude lower than that of PAH. The detection limit for Cu(2+) was determined to be 0.8 μM for RBS/ZIF-8, which is three times lower than that of RBS. The two composites both display high selectivity to Cu(2+) over competing metal ions. The PAH/ZIF-8 fluorescent sensor was successfully applied to Cu(2+) determination in environmental water. PAH/ZIF-8 exhibits excellent cell membrane permeability and low cytotoxicity in cellular imaging. The enhanced chemical sensor was designed by introducing small molecules into ZIF-8 for the specific recognition of Cu(2+). The Royal Society of Chemistry 2020-04-07 /pmc/articles/PMC9051611/ /pubmed/35498443 http://dx.doi.org/10.1039/c9ra10695b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhang, Jun
Zhao, Xiuyang
Liu, Xuefeng
Dong, Chuan
Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title_full Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title_fullStr Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title_full_unstemmed Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title_short Enhanced chemical sensing for Cu(2+) based on composites of ZIF-8 with small molecules
title_sort enhanced chemical sensing for cu(2+) based on composites of zif-8 with small molecules
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9051611/
https://www.ncbi.nlm.nih.gov/pubmed/35498443
http://dx.doi.org/10.1039/c9ra10695b
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