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Reference type: Journal
Authors: Ding ZQ, Bligh SWA, Tao L, Quan J, Nie HL, Zhu LM, Gong X
Article Title: Molecularly imprinted polymer based on MWCNT-QDs as fluorescent biomimetic sensor for specific recognition of target protein.
Publication date: 2015
Journal: Materials Science and Engineering: C
Volume: 48
Page numbers: 469-479.
DOI: 10.1016/j.msec.2014.12.032
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0928493114008303

Abstract: A novel molecularly imprinted optosensing material based on multi-walled carbon nanotube-quantum dots (MWCNT-QDs) has been designed and synthesized for its high selectivity, sensitivity and specificity in the recognition of a target protein bovine serum albumin (BSA). Molecularly imprinted polymer coated MWCNT-QDs using BSA as the template (BMIP-coated MWCNT-QDs) exhibits a fast mass-transfer speed with a response time of 25 min. It is found that the BSA as a target protein can significantly quench the luminescence of BMIP-coated MWCNT-QDs in a concentration-dependent manner that is best described by a Stern-Volmer equation. The KSV for BSA is much higher than bovine hemoglobin and lysozyme, implying a highly selective recognition of the BMIP-coated MWCNT-QDs to BSA. Under optimal conditions, the relative fluorescence intensity of BMIP-coated MWCNT-QDs decreases linearly with the increasing target protein BSA in the concentration range of 5.0 x 10-7 - 35.0 x 10-7 M with a detection limit of 80 nM
Template and target information: protein, bovine serum albumin, BSA
Author keywords: protein recognition, Fluorescent biomimetic sensor, molecularly imprinted polymer, Multi-walled carbon nanotubes, Quantum dots


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