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DOI码：10.1039/D3TC02089D

发表刊物：Journal of Materials Chemistry C

摘要：Potential resolved electrochemiluminescence (ECL) nanoluminophores are very important for precise analysis and simultaneous determination of multi-targets. Designing ideal potential resolved ECL nanoluminophores, generating multiple high efficiency ECL emissions without overlap and interfere of potential and wavelength, is a challenging subject. Herein, we developed a new nanoluminophore, meso-tetra (4-carboxyphenyl) porphine (TCPP)-functionalized chitosan/Ru(bpy)32+/SiO2 (CRuSiO2) (TCPP@CRuSiO2), with cathode and anode ECL emissions by modifying TCPP on the surface of CRuSiO2 nanoluminophores. TCPP@CRuSiO2 nanoluminophores presented the uniform sphere (~50 nm). They exhibited two ECL emissions with 695 nm and 610 nm at -1.20 V and 1.15 V, respectively, by using K2S2O8 and tripropylamine (TPrA) as coreactants. Subsequently, the relevant ECL mechanisms are proposed. In the negative potential range, sulfate radical (SO4•ˉ) reacted with TCPPˉ, generated by the electro-reduction of S2O42ˉand TCPP, to form the excited state TCPP*, resulting in ECL-1. In the positive potential range, Ru(bpy)33+ and TPrA•, obtained by electro-oxidation of Ru(bpy)32+ and TPrA, reacted with each other to produce the excited state Ru(bpy)32+*, leading to ECL-2. The synthesized TCPP@CRuSiO2 possesses not only potential and wavelength resolved ECL emissions, but also the advantages of easy synthesis, high ECL efficiency, good stability, and easy filming formation on the electrode surface. This work enriches ECL nanoluminophores, which is of important application potential in precise analysis and multiplex analysis

合写作者：舒江南,杜德鑫,王依莎

第一作者：郭明全

论文类型：期刊论文

通讯作者：崔华

学科门类：理学

文献类型：J

卷号：11

页面范围：13106-13112

是否译文：否

发表时间：2023-08-29

收录刊物：SCI

发布期刊链接：https://pubs.rsc.org/en/Content/ArticleLanding/2023/TC/D3TC02089D