TY - JOUR
T1 - Sigmoidally hydrochromic molecular porous crystal with rotatable dendrons
AU - Yamagishi, Hiroshi
AU - Nakajima, Sae
AU - Yoo, Jooyoung
AU - Okazaki, Masato
AU - Takeda, Youhei
AU - Minakata, Satoshi
AU - Albrecht, Ken
AU - Yamamoto, Kimihisa
AU - Badía-Domínguez, Irene
AU - Oliva, Maria Moreno
AU - Delgado, M. Carmen Ruiz
AU - Ikemoto, Yuka
AU - Sato, Hiroyasu
AU - Imoto, Kenta
AU - Nakagawa, Kosuke
AU - Tokoro, Hiroko
AU - Ohkoshi, Shin ichi
AU - Yamamoto, Yohei
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “π-System Figuration” (JP17H05142, JP17H05155, JP17H05146), “Aquatic Functional Materials” (JP19H05716, JP19H05717), “Coordination Asymmetry” (JP16H06521), Scientific Research (A) (JP16H02081, JP20H00369), Scientific Research (B) (JP19H02746, JP20H02801), Scientific Research (S) (JP15H05757), Joint International Research (JP15KK0182), and Young Scientists (JP19K15334) from Japan Society for the Promotion of Science (JSPS), Leading Initiative for Excellent Young Researchers, MEXT, Kato Foundation for Promotion of Science, The Kao Foundation for Arts and Sciences, Asahi Glass Foundation, Ogasawara Foundation, University of Tsukuba Pre-strategic initiative “Ensemble of light with matters and life”, TIA Kakehashi, Cooperative Research Program NJRC Mater. & Dev. Synchrotron radiation measurements were performed at SPring-8 with the approval of JASRI (2018B1278). The work at the University of Malaga was funded by MICNN (PID2019-110305GB-100) and Junta de Andalucia (UMA18-FED-ERJA-080, P09FQM-4708) projects. The authors acknowledge the computer resources, technical expertise, and assistance provided by the SCBI (Supercomputing and Bioin-formatics) centre of the University of Malaga.
Publisher Copyright:
© 2020, The Author(s).
PY - 2020/12/1
Y1 - 2020/12/1
N2 - Vapochromic behaviour of porous crystals is beneficial for facile and rapid detection of gaseous molecules without electricity. Toward this end, tailored molecular designs have been established for metal–organic, covalent-bonded and hydrogen-bonded frameworks. Here, we explore the hydrochromic chemistry of a van der Waals (VDW) porous crystal. The VDW porous crystal VPC-1 is formed from a novel aromatic dendrimer having a dibenzophenazine core and multibranched carbazole dendrons. Although the constituent molecules are connected via VDW forces, VPC-1 maintains its structural integrity even after desolvation. VPC-1 exhibits reversible colour changes upon uptake/release of water molecules due to the charge transfer character of the constituent dendrimer. Detailed structural analyses reveal that the outermost carbazole units alone are mobile in the crystal and twist simultaneously in response to water vapour. Thermodynamic analysis suggests that the sigmoidal water sorption is induced by the affinity alternation of the pore surface from hydrophobic to hydrophilic.
AB - Vapochromic behaviour of porous crystals is beneficial for facile and rapid detection of gaseous molecules without electricity. Toward this end, tailored molecular designs have been established for metal–organic, covalent-bonded and hydrogen-bonded frameworks. Here, we explore the hydrochromic chemistry of a van der Waals (VDW) porous crystal. The VDW porous crystal VPC-1 is formed from a novel aromatic dendrimer having a dibenzophenazine core and multibranched carbazole dendrons. Although the constituent molecules are connected via VDW forces, VPC-1 maintains its structural integrity even after desolvation. VPC-1 exhibits reversible colour changes upon uptake/release of water molecules due to the charge transfer character of the constituent dendrimer. Detailed structural analyses reveal that the outermost carbazole units alone are mobile in the crystal and twist simultaneously in response to water vapour. Thermodynamic analysis suggests that the sigmoidal water sorption is induced by the affinity alternation of the pore surface from hydrophobic to hydrophilic.
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U2 - 10.1038/s42004-020-00364-3
DO - 10.1038/s42004-020-00364-3
M3 - Article
AN - SCOPUS:85089546318
VL - 3
JO - Communications Chemistry
JF - Communications Chemistry
SN - 2399-3669
IS - 1
M1 - 118
ER -