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Reference type: Journal
Authors: Zhou CH, Wang TT, Liu JQ, Guo C, Peng Y, Bai JL, Liu M, Dong JW, Gao N, Ning BA, Gao ZX
Article Title: Molecularly imprinted photonic polymer as an optical sensor to detect chloramphenicol.
Publication date: 2012
Journal: Analyst
Volume: 137
Issue: (19)
Page numbers: 4469-4474.
DOI: 10.1039/C2AN35617A

Abstract: An inverse opal photonic crystal sensor that could specifically detect chloramphenicol (CAP) in a label-free way was introduced in the current research. A colloidal crystal template was first prepared from monodisperse SiO2 nanospheres. Precursors with different compositions were infused into the void spaces of the respective templates and aggregated. The template and the imprinted CAP were removed, and a molecularly imprinted photonic polymer (MIPP) with numerous nanocavities derived from the SiO2 template was prepared. The MIPP could specifically recognize the target CAP. The results showed that the embedding and transporting of CAP could change the reflection peak intensity of the MIPP. The MIPP exhibited good responsiveness, with a detection range from 1 ng mL-1 to 1 μg mL-1 of CAP. The MIPP response time was 8 min upon its addition to CAP at a concentration of 10 ng mL-1, which is shorter than that of other methods. After repeated use, the MIPP maintained a good performance and detection capacity. Thus, the results prove that the novel sensor could specifically detect CAP in a simple, time-saving, and low-cost manner
Template and target information: chloramphenicol, CAP

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