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Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates

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Title: Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates
Authors: Taguchi, Jumpei Browse this author
Matsuura, Satsuki Browse this author
Seki, Tomohiro Browse this author →KAKEN DB
Ito, Hajime Browse this author →KAKEN DB
Keywords: acylboron compounds
boron-containing heterocycles
cyclization
mechanochromism
photoluminescence
Issue Date: 21-Feb-2020
Publisher: Wiley-Blackwell
Journal Title: Chemistry-A European journal
Volume: 26
Issue: 11
Start Page: 2450
End Page: 2455
Publisher DOI: 10.1002/chem.201904983
Abstract: A new class of borate luminophores has been synthesized by a simple two-step reaction using potassium acyltrifluoroborates (KATs) as starting materials. The hydrazones obtained from reactions between KATs and 2-hydrazinopyridines followed by a cyclization resulted in the unprecedented formation of C,N-chelated six-membered bora-heterocycles. Under consideration of the results of DFT and TD-DFT calculations, four luminophores based on such bora-heterocycles are designed and synthesized, which exhibit a tunable fluorescence range from blue to red in the solid state. Moreover, one of the luminophores exhibits mechanofluorochromism from blue to yellow/green. As a result of the aforementioned mechanochromism of one of these luminophores, white-color emission was achieved by simply mixing the four luminophores.
Rights: This is the peer reviewed version of the following article: J. Taguchi, S. Matsuura, T. Seki, H. Ito, Chem. Eur. J. 2020, 26, 2450. , which has been published in final form at doi.org/10.1002/chem.201904983. 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)
URI: http://hdl.handle.net/2115/80472
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 伊藤 肇

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