Encapsulation of Isolated C60 Molecules in a Cyclodextrin-based Metal-Organic Framework

Anna Nagai; Shinsuke Tsutsumi; Wataru Michida; Mina Sakuragi; Keiji Mizuki; Katsuki Kusakabe

doi:10.1252/jcej.17we333

Materials Engineering and Interfacial Phenomena

Encapsulation of Isolated C60 Molecules in a Cyclodextrin-based Metal-Organic Framework

Anna Nagai, Shinsuke Tsutsumi, Wataru Michida, Mina Sakuragi, Keiji Mizuki, Katsuki Kusakabe

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Keywords: Porous material, Crystal, Fullerene, Micropore

JOURNAL RESTRICTED ACCESS

2018 Volume 51 Issue 7 Pages 615-619

DOI https://doi.org/10.1252/jcej.17we333

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Abstract

Encapsulation of fullerene C60 in CD-MOF was achieved by crystallization from the C60/γ-CD complex in KOH solution. C60 was located in hydrophobic nanopores composed of a pair of γ-CD tori, whereas hydrophilic porphyrin (TCPP) was located in the spherical nanopores at the center of the (γ-CD)₆ unit. The isolated C60 and TCPP molecules in CD-MOF emitted green and orange fluorescence in the solid state, respectively. The fluorescence intensity of the C60/TCPP/CD-MOF was greatly weakened compared to that of TCPP/CD-MOF due to electron injection from the excited state of TCPP to C60.

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