Cui Hua
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- Professor
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- Name (English):Hua Cui
- Name (Pinyin):Cui Hua
- E-Mail:
- Business Address:环境资源楼-339
- Contact Information:0551－3600730
- Degree:Dr
- Professional Title:Professor
- Teacher College:Chemistry and Materials Science
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- Paper Publications
Tetrakis (4-carboxyphenyl) porphyrin and Ru(bpy)32+ modified SiO2 nanosphere for potential and wavelength resolved electrochemiluminescence
Release time:2023-09-13 Hits:
- DOI number:10.1039/D3TC02089D
- Journal:Journal of Materials Chemistry C
- Abstract: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
- Co-author:shujiangnan,杜德鑫,王依莎
- First Author:郭明全
- Indexed by:Journal paper
- Correspondence Author:Hua Cui
- Discipline:Natural Science
- Document Type:J
- Volume:11
- Page Number:13106-13112
- Translation or Not:no
- Date of Publication:2023-08-29
- Included Journals:SCI
- Links to published journals:https://pubs.rsc.org/en/Content/ArticleLanding/2023/TC/D3TC02089D