Mechanically-Sensitive Fluorochromism by Molecular Domino Transformation in a Schiff Base Crystal

The ability to make large changes in properties against small external stimuli is one of key factors in sensing materials. Molecular domino transformation, i.e. polymorphic transformation starting at a stimulated point and extending to the whole crystal, is an attractive phenomenon from this viewpoi...

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Published in:ChemRxiv 2023-08
Main Authors: Sasaki, Toshiyuki, Nakane, Takanori, Kawamoto, Akihiro, Zhao, Yakai, Fujimoto, Yushi, Nishizawa, Tomohiro, Ito, Fuyuki, Ramamurty, Upadrasta, Thakuria, Ranjit, Kurisu, Genji
Format: Article
Language:English
Subjects:
Chemistry
Crystallography
Crystals
Electron diffraction
Emission analysis
Imines
Materials Science
Microcrystals
Photochemistry (Physical Chem.)
Physical Chemistry
Stimuli
Transformations
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creator Sasaki, Toshiyuki
Nakane, Takanori
Kawamoto, Akihiro
Zhao, Yakai
Fujimoto, Yushi
Nishizawa, Tomohiro
Ito, Fuyuki
Ramamurty, Upadrasta
Thakuria, Ranjit
Kurisu, Genji
description The ability to make large changes in properties against small external stimuli is one of key factors in sensing materials. Molecular domino transformation, i.e. polymorphic transformation starting at a stimulated point and extending to the whole crystal, is an attractive phenomenon from this viewpoint. We recently found such a transformation in a crystal of 4-nitro-N-salicylideneaniline as one of Schiff bases. In this study, quantitative evaluations were conducted on a mechanical stimulus and emission properties in the transformation of the crystal. Our results demonstrate the potential applicability of the crystal to detection of even less than a few μN mechanical stimuli as an emission color change. A molecular level transformation mechanism revealed by microcrystal electron diffraction also contributes to future development of the transformation-based materials.
doi_str_mv 10.26434/chemrxiv-2023-kbltp
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subjects Chemistry
Crystallography
Crystals
Electron diffraction
Emission analysis
Imines
Materials Science
Microcrystals
Photochemistry (Physical Chem.)
Physical Chemistry
Stimuli
Transformations
title Mechanically-Sensitive Fluorochromism by Molecular Domino Transformation in a Schiff Base Crystal
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