Carbazole and triazole-containing conjugated polymer as a visual and fluorometric probe for iodide and mercury

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• 作者：Lingyun Wang ; ^{lingyun@scut.edu.cn" class="auth_mail}Author Vitae ; Guipo FangAuthor Vitae ; Decheng YeAuthor Vitae ; Derong CaoAuthor Vitae
• 关键词：Synthesis ; Iodide ; Mercury ; Fluorometric ; Colorimetric ; Conjugated polymer
• 刊名：Sensors and Actuators B: Chemical
• 出版年：May, 2014
• 年：2014
• 卷：195
• 期：Complete
• 页码：572-580
• 全文大小：1483 K

文摘

A new conjugated polymer containing carbazole and triazole moieties (P1) was successfully synthesized by Suzuki coupling reaction. The UV-vis and fluorescence spectra of the P1 showed significant changes via addition of I^{鈭?/sup> and Hg2+. A colorless P1 solution turned yellow in the presence of iodide salts, which subsequently became colorless again on the addition of Hg2+ salts that could be easily detected visually by the bare eyes. P1 allowed a highly sensitive determination of iodide via significant FL intensity quenching, and fluorescence recovery was observed following the addition of Hg2+. The Stern-Volmer constant (K_sv) value obtained for the detection of iodide was 2.25 脳 107 M鈭?, confirming very high sensitivity of P1 for iodide salts. The detection of both iodide and mercury was also possible in solid state by a P1-based test strip, which showed the capability to detect and respond to both iodide and mercury salts. The results indicated that P1 can act as a dual-channel, high selective, immediacy and sensitive optical probe for I鈭?/sup> and Hg2+.}