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Title: Flexible interlocked porous frameworks allow quantitative photoisomerization in a crystalline solid
Authors: Zheng, Yongtai
Sato, Hiroshi
Wu, Pengyan
Jeon, Hyung Joon
Matsuda, Ryotaro
Kitagawa, Susumu  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 佐藤, 弘志
北川, 進
Keywords: Carbon capture and storage
Crystal engineering
Metal–organic frameworks
Issue Date: 24-Jul-2017
Publisher: Springer Nature
Journal title: Nature Communications
Volume: 8
Thesis number: 100
Abstract: Photochromic molecules have shown much promise as molecular components of stimuli-responsive materials, but despite recent achievements in various photoresponsive materials, quantitative conversion in photochemical reactions in solids is hampered by the lack of intrinsic structural flexibility available to release stress and strain upon photochemical events. This issue remains one of the challenges in developing solid-state photoresponsive materials. Here, we report a strategy to realize photoresponsive crystalline materials showing quantitative reversible photochemical reactions upon ultraviolet and visible light irradiation by introducing structural flexibility into crystalline porous frameworks with a twofold interpenetration composed of a diarylethene-based ligand. The structural flexibility of the porous framework enables highly efficient photochemical electrocyclization in a single-crystal-to-single-crystal manner. CO2 sorption on the porous crystal at 195 K is reversibly modulated by light irradiation, and coincident X-ray powder diffraction/sorption measurements clearly demonstrate the flexible nature of the twofold interpenetrated frameworks.
Description: 「知恵の輪」構造で固い素材を柔らかく --CO2吸着量を光で制御する新材料--. 京都大学プレスリリース. 2017-07-27.
Rights: © The Author(s) 2017. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
DOI(Published Version): 10.1038/s41467-017-00122-5
PubMed ID: 28740107
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