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Title
Japanese: 
English:Evidence for encaging luminescent guest molecules in the inner cages of zeolite host 
Author
Japanese: 片岡 朋治, Mozer Attila J., 塚原 保徳, 山内 智央, 和田 雄二.  
English: Kataoka Tomoharu, Mozer Attila J., Tsukahara Yasunori, Yamauchi Tomohisa, Wada Yuji.  
Language English 
Journal/Book name
Japanese: 
English:Bulletin of the Chemical Society of Japan 
Volume, Number, Page Vol. 80    No. 12    pp. 2303-2312
Published date Dec. 2007 
Publisher
Japanese: 
English:Society of Japan 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1246/bcsj.80.2303
Abstract Clear evidence for encaging guest mols. in a host material was obtained for FAU-type zeolite contg. fluorescein (FL) as a guest by employing the luminescence-quenching phenomenon of FL with C60. Whereas fluorescence of FL mols. adsorbed on the outer surface of the zeolite was effectively quenched as well as that in a homogeneous soln., that of the most FL mols. in the cages of the zeolite did not suffer from quenching by C60, giving clear evidence that FL mols. are located in the inner cages, which are inaccessible to C60. Only the fluorescence of the FL mols. located in the cages in the outermost unit cells of the zeolite was partially quenched. This partial quenching can be understood by considering the structure of the zeolite and the crit. distance of electron transfer inducing the fluorescence quenching.

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