Electrochemiluminescent detection of Pb2+ by graphene/gold nanoparticles and CdSe quantum dots
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- 作者：Liping Lu ; lipinglu@bjut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Linqing Guo ; Jiao Li ; Tianfang Kang ; Shuiyuan Cheng
- 关键词：Biosensor ; DNA ; Electrochemiluminescence ; Pb(II) ; Quantum dots
- 刊名：Applied Surface Science
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：388
- 期：part_PA
- 页码：431-436
- 全文大小：1388 K
文摘
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An ECL sensor was fabricated based on the distance dependent between CdSe QDs and gold nanoparticles.
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The ssDNA strands rich in G bases adopt the G4 conformation when Pb2+ is present in detection system.
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AuNPs/RGO composite improved the performance of electron transfer of sensor.
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The ECL sensor was used to detect Pb2+ concentration in an actual water sample with high sensitivity and selectivity.