A contorted nanographene shelter

A contorted nanographene shelter

Nanographenes have kindled considerable interest in the fields of materials science and supramolecular chemistry as a result of their unique self-assembling and optoelectronic properties. Encapsulating the contorted nanographenes inside artificial receptors, however, remains challenging. Herein, we...

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Bibliographic Details
Published in:Nature communications 2021-08, Vol.12 (1), p.5191-5191, Article 5191
Main Authors: Wu, Huang, Wang, Yu, Song, Bo, Wang, Hui-Juan, Zhou, Jiawang, Sun, Yixun, Jones, Leighton O, Liu, Wenqi, Zhang, Long, Zhang, Xuan, Cai, Kang, Chen, Xiao-Yang, Stern, Charlotte L, Wei, Junfa, Farha, Omar K, Anna, Jessica M, Schatz, George C, Liu, Yu, Fraser Stoddart, J
Format: Article
Language:eng
Subjects:
Binding
Cage compounds
Chemistry
Conformation
Deactivation
Diameters
Encapsulation
Experimentation
interlocked molecules
Laboratories
Mass spectrometry
MATERIALS SCIENCE
NANOSCIENCE AND NANOTECHNOLOGY
Optoelectronics
Receptor mechanisms
Receptors
Scientific imaging
Self-assembly
supramolecular chemistry
Synthesis
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Summary:Nanographenes have kindled considerable interest in the fields of materials science and supramolecular chemistry as a result of their unique self-assembling and optoelectronic properties. Encapsulating the contorted nanographenes inside artificial receptors, however, remains challenging. Herein, we report the design and synthesis of a trigonal prismatic hexacationic cage, which has a large cavity and adopts a relatively flexible conformation. It serves as a receptor, not only for planar coronene, but also for contorted nanographene derivatives with diameters of approximately 15 Å and thicknesses of 7 Å. A comprehensive investigation of the host-guest interactions in the solid, solution and gaseous states by experimentation and theoretical calculations reveals collectively an induced-fit binding mechanism with high binding affinities between the cage and the nanographenes. Notably, the photostability of the nanographenes is improved significantly by the ultrafast deactivation of their excited states within the cage. Encapsulating the contorted nanographenes inside the cage provides a noncovalent strategy for regulating their photoreactivity.
ISSN:2041-1723
2041-1723