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Article: Visualization and Manipulation of Solid-State Molecular Motions in Cocrystallization Processes

TitleVisualization and Manipulation of Solid-State Molecular Motions in Cocrystallization Processes
Authors
Issue Date2021
Citation
Journal of the American Chemical Society, 2021, v. 143, p. 9468-9477 How to Cite?
AbstractSolid-state molecular motions (SSMM) play a critical role in adjusting behaviors and properties of materials. However, research on SSMM, especially for multicomponent systems, suffers from various problems and is rarely explored. Herein, through collaboration with cocrystal engineering, visualization and manipulation of SSMM in two-component systems, namely, FSBO ((E)-2-(4-fluorostyryl)benzo[d]oxazole)/TCB (1,2,4,5-tetracyanobenzene) and PVBO ((E)-2-(2-(pyridin-4-yl)vinyl)benzo[d]oxazole)/ TCB, were realized. The obtained yellow-emissive F/T (FSBO/TCB) cocrystal displayed turn-on fluorescence, and the green-emissive P/T (PVBO/TCB) cocrystal presented redder emission, both of which exhibited an aggregation-induced emission property. At varied pressure and temperature, the grinding mixtures of FSBO/TCB and PVBO/TCB displayed different molecular motions that were readily observed through the fluorescence signal. Notably, even without grinding, FSBO and TCB molecules could move over for 4 mm in a 1D tube. The unique emission changes induced by SSMM were applied in information storage and dynamic anticounterfeiting. This work not only visualized and manipulated SSMM but offered more insights for multicomponent study in aggregate science.
Persistent Identifierhttp://hdl.handle.net/10722/315096

 

DC FieldValueLanguage
dc.contributor.authorWang, H-
dc.contributor.authorLi, Q-
dc.contributor.authorZhang, J-
dc.contributor.authorZhang, H-
dc.contributor.authorShu, Y-
dc.contributor.authorZhao, Z-
dc.contributor.authorJiang, W-
dc.contributor.authorDu, L-
dc.contributor.authorPhillips, DL-
dc.contributor.authorLam, JWY-
dc.contributor.authorSung, HHY-
dc.contributor.authorWilliams, ID-
dc.contributor.authorLu, R-
dc.contributor.authorTang, BZ-
dc.date.accessioned2022-08-05T09:40:08Z-
dc.date.available2022-08-05T09:40:08Z-
dc.date.issued2021-
dc.identifier.citationJournal of the American Chemical Society, 2021, v. 143, p. 9468-9477-
dc.identifier.urihttp://hdl.handle.net/10722/315096-
dc.description.abstractSolid-state molecular motions (SSMM) play a critical role in adjusting behaviors and properties of materials. However, research on SSMM, especially for multicomponent systems, suffers from various problems and is rarely explored. Herein, through collaboration with cocrystal engineering, visualization and manipulation of SSMM in two-component systems, namely, FSBO ((E)-2-(4-fluorostyryl)benzo[d]oxazole)/TCB (1,2,4,5-tetracyanobenzene) and PVBO ((E)-2-(2-(pyridin-4-yl)vinyl)benzo[d]oxazole)/ TCB, were realized. The obtained yellow-emissive F/T (FSBO/TCB) cocrystal displayed turn-on fluorescence, and the green-emissive P/T (PVBO/TCB) cocrystal presented redder emission, both of which exhibited an aggregation-induced emission property. At varied pressure and temperature, the grinding mixtures of FSBO/TCB and PVBO/TCB displayed different molecular motions that were readily observed through the fluorescence signal. Notably, even without grinding, FSBO and TCB molecules could move over for 4 mm in a 1D tube. The unique emission changes induced by SSMM were applied in information storage and dynamic anticounterfeiting. This work not only visualized and manipulated SSMM but offered more insights for multicomponent study in aggregate science.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleVisualization and Manipulation of Solid-State Molecular Motions in Cocrystallization Processes-
dc.typeArticle-
dc.identifier.emailDu, L: ailleen@hku.hk-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770-
dc.identifier.doi10.1021/jacs.1c02594-
dc.identifier.hkuros334850-
dc.identifier.volume143-
dc.identifier.spage9468-
dc.identifier.epage9477-

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