Synthesis of photoluminescent o-phenylenediamine-m-phenylenediamine copolymer nanospheres: An effective fluorescent sensing platform for selective and sensitive detection of chromium(VI) ion

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• 作者：Xun Song^a ; ¹ ; Huaiyu Sun^b ; ¹ ; Siwei Yang^a ; Shizhen Zhao^a ; Fang Liao^a ; ^{liaozhang2003@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：o-Phenylenediamine&ndash ; m-phenylenediamine copolymer ; Fluorescent sensoring ; Chromium(VI) ion
• 刊名：Journal of Luminescence
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：169
• 期：part_PA
• 页码：186-190
• 全文大小：1962 K

文摘

In this paper, we demonstrated a fluorescent o-phenylenediamine–m-phenylenediamine copolymer sensing system, which was synthesized by a facile and one-step hydrothermal method. The copolymer was first used as fluorescent probe for the detection of Chromium(VI) ion (Cr⁶⁺) and showed high selectivity and sensitivity. The detection limit was 1×10⁻¹¹ M. It showed excellent linear relationships in wide range of 7×10⁻¹¹–6×10⁻¹⁰ M. Moreover, the addition of ethylenediaminetetraacetate (EDTA) to the detection system could successfully combine with Cr⁶⁺ to form metal chelates, making the fluorescence recovery of o-phenylenediamine–m-phenylenediamine copolymer. What is important, the prepared process had no addition of initiating agent.