UV-vis absorption and fluorescence spectra, solvatochromism, and application to pH sensors of novel xanthene dyes having thienyl and thieno[3,2-b]thienyl rings as auxochrome
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- 作者：Masaki Matsui ; matsuim@gifu-u.ac.jp ; Takaya Yamamoto ; Kenta Kakitani ; Siddanagouda Biradar ; Yasuhiro Kubota ; Kazumasa Funabiki
- 关键词：Xanthene dye ; π-Excess heteroaromatic ring ; Auxochrome ; UV&ndash ; Vis absorption spectrum ; DFT calculations ; Solvatochromism
- 刊名：Dyes and Pigments
- 出版年：2017
- 出版时间：April 2017
- 年：2017
- 卷：139
- 期：Complete
- 页码：533-540
- 全文大小：1980 K
- 卷排序：139
文摘
Synthesis and properties of novel xanthenes dyes having thienyl and thieno[3,2-b]thienyl rings as auxochrome. More bathochromic than know Rhodamine dye. Colors only in non-hydrogen-bond acceptor solvents. A lactone precursor colors by adding strong acids whose pKa value is lower than −2.2, whereas that of rhodamine B lower than 4.7.