期刊
CHEMISTRY LETTERS
卷 46, 期 6, 页码 855-857出版社
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.170210
关键词
Porous organic molecules; Cycloparaphenylene; Host-guest interaction
Molecular carbon nanorings, [n]cycloparaphenylenes ([n]CPP), are a unique class of porous molecules with allbenzene surface. Herein, we report the preparation of polymorphs of [6] CPP crystals for the first time, and the discovery of their packing structure-dependent properties. We found that the herringbone-packed structure is thermodynamically more stable than the tubular-packed structure. We revealed that their host-guest interaction depends on the packing structures of [6] CPP: the tubular-packing affords one-dimensional open channels for weak guest sorption, while the herringbone-packing gives closed cavities for strong guest entrapment. This study exemplifies that the solid-state host-guest chemistry of CPP crystals can be directed by controlling their packing structures.
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