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Mechanochromic Luminescence from Crystals Consisting of Intermolecular Hydrogen‐Bonded Sheets

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Title: Mechanochromic Luminescence from Crystals Consisting of Intermolecular Hydrogen‐Bonded Sheets
Authors: Yoshimitsu, Sagara Browse this author
Kiyonori, Takahashi Browse this author →KAKEN DB
Takayoshi, Nakamura Browse this author →KAKEN DB
Tamaoki, Nobuyuki Browse this author →KAKEN DB
Keywords: crystals
hydrogen bonds
mechanochromic luminescence
stimuli-responsive material
Issue Date: 17-Feb-2020
Publisher: Wiley-Blackwell
Journal Title: Chemistry – An Asian Journal
Volume: 15
Issue: 4
Start Page: 478
End Page: 482
Publisher DOI: 10.1002/asia.201901679
Abstract: Introduction of functional groups that can form intermolecular hydrogen bonds into highly-emissive luminophores is a promising way to induce mechanochromic luminescence. Herein, we report that a 9,10-bis(phenylethynyl)anthracene derivative featuring two amide groups forms green-emissive crystals based on two-dimensional hydrogen-bonded molecular sheets. Mechanical grinding changed the emission from green to yellow, owing to a transition from a crystalline to an amorphous phase. Infrared spectroscopy revealed that mechanical stimuli disrupted the linear hydrogen-bonding formation. A thermal treatment recovered the original green photoluminescence.
Rights: This is the peer reviewed version of the following article: Y. Sagara, K. Takahashi, T. Nakamura, N. Tamaoki, Chem. Asian J. 2020, 15, 478, which has been published in final form at . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 相良 剛光

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