Disappeared supramolecular isomer reappears with perylene guest

IUCrJ

Shim Sung Lee¹  Masaaki Ohba²  Atanu Dey³  Kenta Sasaki³  Jagadese J. Vittal³  In-Hyeok Park³ 

[1] Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Republic of Korea;Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore;

关键词: metal–organic frameworks;    supramolecular isomers;    disappearing polymorphism;    crystal engineering;    polymorphism;    mofs;    coordination polymers;    supramolecular isomerism;   

DOI  :  10.1107/S2052252520001451

来源: DOAJ

【 摘 要 】

Among different types of polymorphism, disappearing polymorphism deals with the metastable kinetic form which can not be reproduced after its first isolation. In the world of coordination polymers (CPs) and metal–organic frameworks (MOFs), despite the fact that many types of supramolecular isomerism exist, we are unaware of disappearing supramolecular isomerism akin to disappearing polymorphism. This work reports a MOF with dia topology that could not be reproduced, but subsequent synthesis yielded another supramolecular isomer, a double-pillared-layer MOF. When perylene was added in the same reaction, the disappeared dia MOF reappeared with perylene as a guest in the channels. Interestingly, the photoluminescence of the dia MOF with a perylene guest is dominated by the emission of the guest molecule. The influence of guest molecules on the stabilization of the supramolecular isomers of a MOF opens up a strategy to access MOFs with different structures.

【 授权许可】

Unknown