期刊
ADVANCED OPTICAL MATERIALS
卷 11, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202201856
关键词
host-guest systems; luminescence tuning; luminescent materials; metal-organic frameworks; solvent-free synthesis
Metal-organic frameworks (MOFs) are used to confine guest molecules and control their emissions. This study explores the encapsulation of two polycyclic aromatic hydrocarbons in the MOF ZIF-8, which allows for tunable luminescence color and excellent thermal stability. The variations in luminescence are attributed to guest arrangements and host-guest interactions within the nanocompartments.
Metal-organic frameworks (MOFs) can provide a variety of nanocompartments for the confinement of guest molecules. Furthermore, the emissions of fluorescent molecules can be tuned by confinement. In this study, a solvent-free bottle-around-ship method is used to encapsulate perylene and 9,10-dimethylanthracene, two polycyclic aromatic hydrocarbons, in the MOF ZIF-8. Luminescence color tuning is achieved, including white-light emission, when controlling the loading of only a single type of guest. Photophysical analysis suggests that the variations in luminescence result from various guest arrangements in the nanocompartments, as well as host-guest interactions. Because of the tight confinement of the guests, this host-guest system displays excellent luminescence thermal stability.
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