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Reference type: Journal
Authors: Duan HM, Li LL, Wang XJ, Wang YH, Li JB, Luo CN
Article Title: β-Cyclodextrin/chitosan-magnetic graphene oxide-surface molecularly imprinted polymer nanocomplex coupled with chemiluminescence biosensing of bovine serum albumin.
Publication date: 2015
Journal: RSC Advances
Volume: 5
Issue: (84)
Page numbers: 68397-68403.
DOI: 10.1039/C5RA11061K

Abstract: In this report, a sensitive and selective chemiluminescence (CL) biosensor for bovine serum albumin (BSA) coupled with a surface molecularly imprinted polymer nanocomplex using β-cyclodextrin/chitosan-magnetic graphene oxide as backbone material (β-CD/Cs-MGO-SMIP) was investigated. The material β-CD/Cs-MGO combined with β-cyclodextrin, chitosan and graphene oxide was used to provide multiple imprinting sites and a large surface area was characterized by SEM, XRD and FTIR. It was found that β-CD/Cs-MGO-SMIP followed the Langmuir isotherm equation and pseudo-second order sorption kinetics when binding the template. This material demonstrated fast mass transfer, a promoted rate of removal of the biomacromolecule and excellent recognition and adsorption ability for the imprinting cavities situated at the surface of β-CD/Cs-MGO, which enabled easy access to BSA. Subsequently, a highly sensitive CL biosensor for BSA was proposed based on the strong recognition effect between β-CD/Cs-MGO-SMIP and BSA which led to a high selectivity of the sensor, and the proposed biosensor could assay in the range 5.0 x 10-7 to 1.0 x 10-4 mg mL-1 with a detection limit of 1.1 x 10-7 mg mL-1. The obtained recoveries were between 94% and 106% when determining samples
Template and target information: protein, bovine serum albumin, BSA

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