Time-dependent solid-state molecular motion and colour tuning of host-guest systems by organic solvents

Yu-Dong Yang, Xiaofan Ji, Zhi-Hao Lu, Jian Yang, Chao Gao, Haoke Zhang, Ben Zhong Tang (), Jonathan L. Sessler () and Han-Yuan Gong ()
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Yu-Dong Yang: Beijing Normal University
Xiaofan Ji: The Hong Kong University of Science and Technology
Zhi-Hao Lu: Beijing Normal University
Jian Yang: Beijing Normal University
Chao Gao: Beijing Normal University
Haoke Zhang: The Hong Kong University of Science and Technology
Ben Zhong Tang: The Hong Kong University of Science and Technology
Jonathan L. Sessler: The University of Texas at Austin
Han-Yuan Gong: Beijing Normal University

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Host-guest complex solid state molecular motion is a critical but underexplored phenomenon. In principle, it can be used to control molecular machines that function in the solid state. Here we describe a solid state system that operates on the basis of complexation between an all-hydrocarbon macrocycle, D4d-CDMB-8, and perylene. Molecular motion in this solid state machine is induced by exposure to organic solvents or grinding and gives rise to different co-crystalline, mixed crystalline, or amorphous forms. Distinct time-dependent emissive responses are seen for different organic solvents as their respective vapours or when the solid forms are subject to grinding. This temporal feature allows the present D4d-CDMB-8⊃perylene-based system to be used as a time-dependent, colour-based 4th dimension response element in pattern-based information codes. This work highlights how dynamic control over solid-state host-guest molecular motion may be used to induce a tuneable temporal response and provide materials with information storage capability.

Date: 2020
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DOI: 10.1038/s41467-019-13844-5

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