Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, PR China.
Colloids Surf B Biointerfaces. 2010 Mar 1;76(1):259-64. doi: 10.1016/j.colsurfb.2009.11.001. Epub 2009 Nov 14.
In this paper, we proposed a simple and sensitive assay of phenolic compounds (PCs) using 3-mercaptocarboxylic acid (MPA) modified CdTe nanocrystals (CdTe NCs), which contain abundant carboxylic groups (-COOH) and are water-soluble, stable and biocompatible. The effects of surfactants on the CdTe/H(2)O(2) chemiluminescence (CL) system were investigated. It is found that the addition of Tween 20 into the system could induce a significant enhancement on CL intensity. PCs were observed to inhibit the CL signal of the CdTe/H(2)O(2)/Tween 20 system and determined by the proposed method. The CL mechanism was also discussed briefly based on the photoluminescence (PL) and CL spectra.
在本文中，我们提出了一种使用 3-巯基丙酸（MPA）修饰的 CdTe 纳米晶体（CdTe NCs）检测酚类化合物（PCs）的简单灵敏方法，MPA 含有丰富的羧酸基团（-COOH），具有水溶性、稳定性和生物相容性。考察了表面活性剂对 CdTe/H(2)O(2)化学发光（CL）体系的影响。结果发现，向体系中加入 Tween 20 可显著增强 CL 强度。观察到 PCs 抑制了 CdTe/H(2)O(2)/Tween 20 体系的 CL 信号，并通过所提出的方法进行了测定。还根据光致发光（PL）和 CL 光谱简要讨论了 CL 机制。
