A colorimetric and fluorescent sensor for Cu²⁺ and F⁻ based on a diarylethene with a 1,8-naphthalimide Schiff base unit

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• 作者：Yinglong FuAuthor Vitae ; Congbin Fan ; ^{congbinfan@163.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Gang LiuAuthor Vitae ; Shouzhi Pu ; ^{pushouzhi@tsinghua.org.cn" class="auth_mail" title="E-mail the corresponding author}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 Cu²⁺ and F⁻. With Cu²⁺, 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 × 10⁴ L mol⁻¹ for the diarylethene-Cu²⁺ complex was calculated from the Benesi-Hildebrand plot. In the presence of F⁻, absorption of the diarylethene showed redshift with a color change from greenish yellow to blue.