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Selective Fluorescent Sensing of α-amanitin in Serum Using Carbon Quantum Dots-Embedded Specificity Determinant Imprinted Polymers

Selective Fluorescent Sensing of α-amanitin in Serum Using Carbon Quantum Dots-Embedded Specificity Determinant Imprinted Polymers

Liming Feng, Lei Tan, He Li, Zhiguang Xu, Guixian Shen, Youwen Tang

Biosens Bioelectron. 2015 Jul 15;69:265-71.

PMID: 25770458

Abstract:

α-amanitin could make patients die of acute liver failure within a short time if suitable treatment is not provided in a timely fashion. This paper demonstrates a new strategy for direct detection of α-amanitin in serum using carbon quantum dots-embedded specificity determinant imprinted polymers. According to the structure of α-amanitin, we selected a proper moiety of α-amanitin as specificity determinant to synthesize template to prepare the MIPs. The computer simulation was used to screen out acidic methacrylic acid (MAA) and basic 4-vinyl pyridine (4-Vpy) together as functional monomers, and the experiments further proved that synergistic interaction of MAA and 4-Vpy was beneficial to enhance the recognition capability of MIPs for α-amanitin. Moreover, the fluorescence intensity showed good linear correlations with the concentration of α-amanitin from 0.05 to 4.0μgmL(-1). The detection limit for α-amanitin was 15ngmL(-1). The nanoparticles were employed to directly detect α-amanitin in serum without any pretreatment with recoveries of 97.8-100.9%.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP23109059	α-Amanitin		23109-05-9	Price

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