Photoresponsive surface molecularly imprinted polymer on ZnO nanorods for uric acid detection in physiological fluids

A photoresponsive surface molecularly imprinted polymer for uric acid in physiological fluids was fabricated through a facile and effective method using bio-safe and biocompatible ZnO nanorods as a support. The strategy was carried out by introducing double bonds on the surface of the ZnO nanorods w...

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Veröffentlicht in:Materials Science & Engineering C 2016-09, Vol.66, p.33-39
Hauptverfasser: Tang, Qian, Li, Zai-yong, Wei, Yu-bo, Yang, Xia, Liu, Lan-tao, Gong, Cheng-bin, Ma, Xue-bing, Lam, Michael Hon-wah, Chow, Cheuk-fai
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container_issue
container_start_page 33
container_title Materials Science & Engineering C
container_volume 66
creator Tang, Qian
Li, Zai-yong
Wei, Yu-bo
Yang, Xia
Liu, Lan-tao
Gong, Cheng-bin
Ma, Xue-bing
Lam, Michael Hon-wah
Chow, Cheuk-fai
description A photoresponsive surface molecularly imprinted polymer for uric acid in physiological fluids was fabricated through a facile and effective method using bio-safe and biocompatible ZnO nanorods as a support. The strategy was carried out by introducing double bonds on the surface of the ZnO nanorods with 3-methacryloxypropyltrimethoxysilane. The surface molecularly imprinted polymer on ZnO nanorods was then prepared by surface polymerization using uric acid as template, water-soluble 5-[(4-(methacryloyloxy)phenyl)diazenyl]isophthalic acid as functional monomer, and triethanolamine trimethacryl ester as cross-linker. The surface molecularly imprinted polymer on ZnO nanorods showed good photoresponsive properties, high recognition ability, and fast binding kinetics toward uric acid, with a dissociation constant of 3.22×10−5M in aqueous NaH2PO4 buffer at pH=7.0 and a maximal adsorption capacity of 1.45μmolg−1. Upon alternate irradiation at 365 and 440nm, the surface molecularly imprinted polymer on ZnO nanorods can quantitatively uptake and release uric acid. [Display omitted] •Novel surface molecularly imprinted polymer on ZnO nanorods was synthesized.•ZnO-SMIP showed good selectivity toward uric acid in physiological fluids.•ZnO-SMIP displayed good photoresponsive properties.
doi_str_mv 10.1016/j.msec.2016.03.082
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subjects Adsorption
Azobenzene
Constants
Fluids
Imprinted polymers
Kinetics
Methacrylates - chemistry
Molecular Imprinting
Nanorods
Nanotubes - chemistry
Photoresponsive surface molecularly imprinted polymer
Polymerization
Polymers - chemistry
Silanes - chemistry
Spectroscopy, Fourier Transform Infrared
Surface chemistry
Uric acid
Uric Acid - analysis
Water - chemistry
Zinc oxide
Zinc Oxide - chemistry
ZnO nanorods
title Photoresponsive surface molecularly imprinted polymer on ZnO nanorods for uric acid detection in physiological fluids
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