1. Porphyrin nanosphere–graphene oxide composite for ehanced electrochemiluminescence and sensitive detection of Fe3+ in human serum.
- Author
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Li, Linfang, Ning, Xinming, Qian, Yaxuan, Pu, Guiqiang, Wang, Yanfeng, Zhang, Xiaohui, Wang, Huan, Chen, Jing, Shan, Duoliang, and Lu, Xiaoquan
- Subjects
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SEROCONVERSION , *BLOOD proteins , *BLOOD plasma , *GRAPHENE oxide , *SERUM albumin - Abstract
An original electrochemiluminescent (ECL) luminophore porphyrin nanosphere–graphene oxide composite (TCPP NS-GO) was prepared. The TCPP NS-GO could produce greatly enhanced ECL in buffer with potassium peroxydisulfate (K 2 S 2 O 8 ) as the co-reactant. The enhancement ECL mechanism of TCPP NS-GO/K 2 S 2 O 8 system was investigated in detail. Moreover, The TCPP NS-GO composite had an abundant surface functional group to expand its application, which exhibited high sensitivity and selectivity to Fe 3+ . The wide linear relationship between ECL intensity and Fe 3+ concentration from 0.002 to 5.128 μmol L −1 (R 2 = 0.998) was found with the detection limit as low as 1 nmol L −1 . The ECL quenching mechanism of Fe 3+ was proved by UV-vis absorption spectroscopy, Fluorescence emission spectroscopy (FL) and Fourier transform infrared spectroscopy (FT-IR) analysis technology. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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