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Facile and Green Synthesis of Bifunctional Carbon Dots for Detection of Cu2+ and ClO– in Aqueous Solution
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-14 , DOI: 10.1021/acssuschemeng.1c03868 Jin Yang 1 , Xilang Jin 1 , Zhao Cheng 2 , Hongwei Zhou 1 , Lanning Gao 1 , Danlie Jiang 1 , Xile Jie 1 , Yiting Ma 1 , Weixing Chen 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-14 , DOI: 10.1021/acssuschemeng.1c03868 Jin Yang 1 , Xilang Jin 1 , Zhao Cheng 2 , Hongwei Zhou 1 , Lanning Gao 1 , Danlie Jiang 1 , Xile Jie 1 , Yiting Ma 1 , Weixing Chen 1
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Devising novel water-soluble carbon dots (CDs) with a facile and economical process is pivotal for the detection of ions in the environment. In this paper, novel nanoscale CDs (polyethyleneimine-2,4-dihydroxybenzoic acid (PEI-DA)) with water solubility and bifunctional detection were synthesized from hyperbranched polyethyleneimine (hPEI) and 2,4-dihydroxybenzoic acid (DA) via a hydrothermal reaction and further self-assembly. PEI-DA exhibited a good linear relationship with Cu2+ or ClO– in the range of 0–30 μM, and its detection limit was determined to be 193 nM (Cu2+) or 478 nM (ClO–). Meanwhile, PEI-DA presented excellent hypotoxicity and biocompatibility in living cells (HeLa cells). On the basis of extraordinary fluorescence properties, PEI-DA-doped solid sensors (test strips and nanofibrous films) were successfully employed to monitor targets sensitively. More importantly, the fluorescence hydrogel was further constructed to rapidly respond to targets (Cu2+ and ClO–), and it could effectively remove Cu2+ in aqueous solution through adsorption ability. In summary, these simple sensing techniques could be implemented as effective tools to monitor Cu2+ and ClO– in environmental and biological samples.
中文翻译：
用于检测水溶液中 Cu2+ 和 ClO– 的双功能碳点的简便绿色合成
设计具有简便经济的新型水溶性碳点 (CD) 是检测环境中离子的关键。在本文中，从超支化聚乙烯亚胺 (hPEI) 和 2,4-二羟基苯甲酸 (DA) 通过水热反应合成了具有水溶性和双功能检测的新型纳米级 CDs（聚乙烯亚胺-2,4-二羟基苯甲酸（PEI-DA））并进一步自组装。PEI-DA 在0-30 μM 范围内与 Cu 2+或 ClO –表现出良好的线性关系，其检测限确定为 193 nM (Cu 2+ ) 或 478 nM (ClO –）。同时，PEI-DA 在活细胞（HeLa 细胞）中表现出优异的低毒性和生物相容性。基于非凡的荧光特性，PEI-DA 掺杂的固体传感器（测试条和纳米纤维膜）被成功地用于敏感地监测目标。更重要的是，进一步构建了荧光水凝胶以快速响应目标（Cu 2+和ClO –），并且可以通过吸附能力有效去除水溶液中的Cu 2+。总之，这些简单的传感技术可以作为监测环境和生物样品中的Cu 2+和 ClO – 的有效工具来实施。
更新日期：2021-10-04
中文翻译：
用于检测水溶液中 Cu2+ 和 ClO– 的双功能碳点的简便绿色合成
设计具有简便经济的新型水溶性碳点 (CD) 是检测环境中离子的关键。在本文中，从超支化聚乙烯亚胺 (hPEI) 和 2,4-二羟基苯甲酸 (DA) 通过水热反应合成了具有水溶性和双功能检测的新型纳米级 CDs（聚乙烯亚胺-2,4-二羟基苯甲酸（PEI-DA））并进一步自组装。PEI-DA 在0-30 μM 范围内与 Cu 2+或 ClO –表现出良好的线性关系，其检测限确定为 193 nM (Cu 2+ ) 或 478 nM (ClO –）。同时，PEI-DA 在活细胞（HeLa 细胞）中表现出优异的低毒性和生物相容性。基于非凡的荧光特性，PEI-DA 掺杂的固体传感器（测试条和纳米纤维膜）被成功地用于敏感地监测目标。更重要的是，进一步构建了荧光水凝胶以快速响应目标（Cu 2+和ClO –），并且可以通过吸附能力有效去除水溶液中的Cu 2+。总之，这些简单的传感技术可以作为监测环境和生物样品中的Cu 2+和 ClO – 的有效工具来实施。
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