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Obituary
Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
May 11, 2023
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Paper | Regular issue | Vol 89, No. 5, 2014, pp.1173-1181
Published online, 7th April, 2014
Published online, 7th April, 2014
DOI: 10.3987/COM-14-12963
■ Synthesis and Photophysical Properties of Diketopyrrolopyrrole-Based Near-Infrared Dyes
Takuya Yamagata, Junpei Kuwabara, and Takaki Kanbara*
*Graduate School of Pure and Applied Sciences, Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba, 1-1-1 Ten-nodai, Tsukuba-shi, Ibaraki 305-8573, Japan
Abstract
The introduction of phenylethynyl groups to boron-coordinated diketopyrrolopyrrole (DPP) derivatives resulted in the extension of π-conjugation, thereby showing bathochromic shifts of both absorption and emission wavelengths. The emission maximum of the DPP derivatives shifted to a near-infrared region.
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