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Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility

The properties of mechanoresponsive materials are mainly affected by intermolecular interaction, in which anisotropic grinding and hydrostatic high-pressure compression are the powerful tools used for modulation. Upon applying high pressure to 1,6-diphenyl-1,3,5-hexatriene (DPH), the reduced molecul...

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Autores principales: Fu, Zhiyuan, Yang, Zhiqiang, Yang, Xinyi, Wang, Kai, Zou, Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10171183/
https://www.ncbi.nlm.nih.gov/pubmed/37181776
http://dx.doi.org/10.1039/d3sc00482a
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author Fu, Zhiyuan
Yang, Zhiqiang
Yang, Xinyi
Wang, Kai
Zou, Bo
author_facet Fu, Zhiyuan
Yang, Zhiqiang
Yang, Xinyi
Wang, Kai
Zou, Bo
author_sort Fu, Zhiyuan
collection PubMed
description The properties of mechanoresponsive materials are mainly affected by intermolecular interaction, in which anisotropic grinding and hydrostatic high-pressure compression are the powerful tools used for modulation. Upon applying high pressure to 1,6-diphenyl-1,3,5-hexatriene (DPH), the reduced molecular symmetry results in the originally forbidden S(0) → S(1) transition to become allowed that then leads to a 13-times emission enhancement, and π–π interactions result in piezochromism (red-shifted up to 100 nm). With increasing pressure, high-pressure-stiffened H⋯C/C⋯H and H⋯H interactions enable the DPH molecules to generate a NLC mechanical response (9–15 GPa) with K(b) = −5.8764 TPa(−1) along the b-axis. As a contrast, upon destroying the intermolecular interactions by grinding, the DPH luminescence blue-shifts from cyan to blue. Based on this research, we investigate a new pressure-induced emission enhancement (PIEE) mechanism and enabled NLC phenomena by controlling weak intermolecular interactions. In-depth research of the evolution of intermolecular interactions has important reference value for developing new fluorescence materials and structural materials.
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spelling pubmed-101711832023-05-11 Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility Fu, Zhiyuan Yang, Zhiqiang Yang, Xinyi Wang, Kai Zou, Bo Chem Sci Chemistry The properties of mechanoresponsive materials are mainly affected by intermolecular interaction, in which anisotropic grinding and hydrostatic high-pressure compression are the powerful tools used for modulation. Upon applying high pressure to 1,6-diphenyl-1,3,5-hexatriene (DPH), the reduced molecular symmetry results in the originally forbidden S(0) → S(1) transition to become allowed that then leads to a 13-times emission enhancement, and π–π interactions result in piezochromism (red-shifted up to 100 nm). With increasing pressure, high-pressure-stiffened H⋯C/C⋯H and H⋯H interactions enable the DPH molecules to generate a NLC mechanical response (9–15 GPa) with K(b) = −5.8764 TPa(−1) along the b-axis. As a contrast, upon destroying the intermolecular interactions by grinding, the DPH luminescence blue-shifts from cyan to blue. Based on this research, we investigate a new pressure-induced emission enhancement (PIEE) mechanism and enabled NLC phenomena by controlling weak intermolecular interactions. In-depth research of the evolution of intermolecular interactions has important reference value for developing new fluorescence materials and structural materials. The Royal Society of Chemistry 2023-03-30 /pmc/articles/PMC10171183/ /pubmed/37181776 http://dx.doi.org/10.1039/d3sc00482a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Fu, Zhiyuan
Yang, Zhiqiang
Yang, Xinyi
Wang, Kai
Zou, Bo
Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title_full Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title_fullStr Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title_full_unstemmed Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title_short Multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
title_sort multiple responses of 1,6-diphenyl-1,3,5-hexatriene to mechanical stimulation: emission enhancement, piezochromism and negative linear compressibility
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10171183/
https://www.ncbi.nlm.nih.gov/pubmed/37181776
http://dx.doi.org/10.1039/d3sc00482a
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