Design and Syntheses of Highly Emissive Aminobenzopyrano-xanthene Dyes in the Visible and Far-Red Regions

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• 作者：Shinichiro Kamino ; Miho Murakami ; Masaru Tanioka ; Yoshinao Shirasaki ; Keiko Watanabe ; Jun Horigome ; Yousuke Ooyama ; Shuichi Enomoto
• 刊名：Organic Letters
• 出版年：2014
• 出版时间：January 3, 2014
• 年：2014
• 卷：16
• 期：1
• 页码：258-261
• 全文大小：284K
• ISSN：1523-7052

文摘

New derivatives of aminobenzopyrano-xanthene (ABPX) dyes have been designed and synthesized with high fluorescence quantum yields in the visible and far-red regions. It was kinetically demonstrated that the structurally rigid conjugation of the xanthene moiety, which is closely related to the reduction of the nonradiative deactivation process, is an effective molecular design for the drastic enhancement of fluorescence emission efficiency.