Perylene diimide based 鈥榯urn-on鈥?fluorescence sensor for detection of Pd²⁺ in mixed aqueous media

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• 作者：Hai-xia Wang^a ; ^b ; ^{hxwang5270@163.com" class="auth_mail} ; Yue-he Lang^a ; Hui-xuan Wang^a ; Jing-jing Lou^a ; Hai-ming Guo^a ; ^b ; Xi-you Li^c ; ^{xiyouli@sdu.edu.cn" class="auth_mail}
• 关键词：Perylene tetracarboxylic diimide ; Fluorescence sensor ; PDI-1 ; Pd2+ ; Turn-on
• 刊名：Tetrahedron
• 出版年：18 March, 2014
• 年：2014
• 卷：70
• 期：11
• 页码：1997-2002
• 全文大小：1180 K

文摘

A perylene diimide (PDI) based fluorescence chemosensor (PDI-1) for Pd²⁺ was prepared. PDI-1 showed a remarkable fluorescence enhancement (over 120-fold) in the presence of Pd²⁺ in mixed aqueous media with high selectivity and sensitivity. Moreover, the dramatically 鈥榦ff-on鈥?fluorescence response concomitantly induced the obvious color change from dark purple to brilliant pink, which could also be identified by naked eyes easily. The low limit for Pd²⁺ detection was found to be as small as 10^鈭?聽mol/L. Hence, PDI-1 is a highly promising fluorescent chemosensor for the direct determination of residual Pd²⁺ in chemical medicines and environment samples.