open access

https://hdl.handle.net/2115/80472

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

英語

photoluminescence

2020-02-21

Wiley-Blackwell

Chemistry-A European journal

26(11)

2450-2455

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.

学術雑誌論文

Accepted Manuscript

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.

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