期刊
RSC ADVANCES
卷 12, 期 15, 页码 9342-9350出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra09446g
关键词
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资金
- National Key R&D Program of China [2017YFA0303403]
- National Natural Science Foundation of China [11874015, 21802043]
- Program of Introducing Talents of Discipline to Universities [B12024]
This study demonstrates the versatility of ZIF-8 as a carrier material for small molecule capture and fluorescence enhancement. The results indicate that the luminescent behavior of ZIF-8 changes when combined with HPBI, and the fluorescence enhancement effect varies with different concentrations of HPBI. The findings suggest that ZIF-8 may offer great promise for molecular fluorescence sensing.
Zeolitic imidazolate framework-8 (ZIF-8) is one of the most promising metal-organic frameworks because of its excellent high porosity, stability and geometrically well-defined structure. However, the application of ZIF-8 in the field of fluorescent molecular sensing has not been intensively explored. Our work demonstrates the versatility of ZIF-8 as a carrier material, which can be used for small molecule [2-(2-hydroxyphenyl)-1H-benzimidazole (HPBI)] capture and fluorescence enhancement. ZIF-8 displays luminescent behavior changes when combined with HPBI, as the emission peaks of ZIF-8 and HPBI are located in the same range for resonance enhancement of fluorescence. The results of the experiment indicate that the fluorescence enhancement effect will change in the presence of different concentrations of HPBI. We propose that the pore structure of ZIF-8 could provide an opportunity for the adsorption of HPBI molecules, and eventually the adsorption would saturate. The high porosity of ZIF-8 provides the path to HPBI aggregation or entrance into the ZIF-8 internal structure. Our results suggest that ZIF-8 may offer great promise for molecular fluorescence sensing.
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