A colorimetric and fluorescent sensor for Cu<sup>2+sup> and F<sup>−sup> based on a diarylethene with a 1,8-naphthalimide Schiff base unit
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- 作者：Yinglong FuAuthor Vitae ; Congbin Fan<sup> ; sup><sup>congbinfan@163.com" class="auth_mail" title="E-mail the corresponding authorsup>Author Vitae ; Gang LiuAuthor Vitae ; Shouzhi Pu<sup> ; sup><sup>pushouzhi@tsinghua.org.cn" class="auth_mail" title="E-mail the corresponding authorsup>Author Vitae
- 关键词：Diarylethene ; Photochromism ; Naphthalimide ; Cu2+ detection ; F&minus ; detection
- 刊名：Sensors & Actuators: B. Chemical
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：239
- 期：Complete
- 页码：295-303
- 全文大小：1814 K
文摘
A new photochromic diarylethene with a 1,8-naphthalimide Schiff base unit has been synthesized, which exhibited typical photochromism and fluorescent switching properties by photoirradiation with high selectivity to Cu<sup>2+sup> and F<sup>−sup>. With Cu<sup>2+sup>, the diarylethene color changed from greenish yellow to colorless with a decrease in fluorescence intensity at 542 nm. And a binding constant of 3.13 × 10<sup>4sup> L mol<sup>−1sup> for the diarylethene-Cu<sup>2+sup> complex was calculated from the Benesi-Hildebrand plot. In the presence of F<sup>−sup>, absorption of the diarylethene showed redshift with a color change from greenish yellow to blue.