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作者:

Liu, Shufeng (Liu, Shufeng.) | Zhang, Xin (Zhang, Xin.) | Yu, Yanmin (Yu, Yanmin.) | Zou, Guizheng (Zou, Guizheng.)

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摘要:

A promising electrochemiluminescence (ECL) sensing strategy was proposed with dual-stabilizers-capped CdSe quantum dots (QDs) as ECL emitters. The dual-stabilizers-capped CdSe QDs were covalently immobilized onto p-aminobenzoic acid modified glass carbon electrode with ethylenediamine as a link molecule. This strategy can preserve the completely passivated surface states of dual-stabilizers-capped CdSe QDs, so that the sensor demonstrated eye-visible greenish, band gap engineering and monochromatic ECL emission at 546 nm with a fwhm of 35 nm. Moreover, the proposed sensor could accurately quantify dopamine from 10.0 nM to 3.0 mu M with a detection limit of 3.0 nM in practical drug, human urine, and cerebrospinal fluid samples without any signal amplification techniques. This strategy is promising for developing ECL sensors with high sensitivity and spectral selectivity.

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作者机构:

  • [ 1 ] [Liu, Shufeng]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
  • [ 2 ] [Zhang, Xin]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
  • [ 3 ] [Zou, Guizheng]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China
  • [ 4 ] [Yu, Yanmin]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • [Zou, Guizheng]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

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来源 :

ANALYTICAL CHEMISTRY

ISSN: 0003-2700

年份: 2014

期: 5

卷: 86

页码: 2784-2788

7 . 4 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:195

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 118

SCOPUS被引频次: 122

ESI高被引论文在榜: 0 展开所有

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