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Direct synthesis monodisperse hollow molecularly imprinted polymer nanospheres based on unfunctionalized SiO2 for recognition of bisphenol A
Liu Shao-min
Author NameAffiliationE-mail
Liu Shao-min Department of Chemistry, University of Science and Technology of China liusm@ustc.edu.cn 
Abstract:
A novel and effective approach was developed to synthesize monodisperse hollow molecularly imprinted polymer (MHMIPs) nanospheres with unfunctionalized SiO2 sphere in the mixture of toluene and CH3CN. The factors that affect the synthesis of MHMIPs were systematically investigated. And found the suitable ratio of toluene and CH3CN, and functional monomer that can generate double H–bonding interaction, were the critical factors to obtain MHMIPs with high uniformity and monodispersion. The obtained MHMIP exhibits fast adsorption rate and high adsorption capacities (270 μmol?g–1) for bisphenol A, and with increase the shell thickness from 90 to 130 nm, the binding capacity of imprinted shell decreased gradually. The relative selectively coefficient of MHMIPs for phenol, TBBPA and PTBP were calculated to 1.53, 1.83 and 1.90, respectively. These indicate the MHMIPs have good adsorption performance and will facilitate its applications in selectively remove or sensitively analysis of bisphenol A.
Key words:  Hollow molecularly imprinte, Molecular recognition, Nanostructured polymers, Bisphenol A
FundProject:
Direct synthesis monodisperse hollow molecularly imprinted polymer nanospheres based on unfunctionalized SiO2 for recognition of bisphenol A
刘少民
摘要:
A novel and effective approach was developed to synthesize monodisperse hollow molecularly imprinted polymer (MHMIPs) nanospheres with unfunctionalized SiO2 sphere in the mixture of toluene and CH3CN. The factors that affect the synthesis of MHMIPs were systematically investigated. And found the suitable ratio of toluene and CH3CN, and functional monomer that can generate double H–bonding interaction, were the critical factors to obtain MHMIPs with high uniformity and monodispersion. The obtained MHMIP exhibits fast adsorption rate and high adsorption capacities (270 μmol?g–1) for bisphenol A, and with increase the shell thickness from 90 to 130 nm, the binding capacity of imprinted shell decreased gradually. The relative selectively coefficient of MHMIPs for phenol, TBBPA and PTBP were calculated to 1.53, 1.83 and 1.90, respectively. These indicate the MHMIPs have good adsorption performance and will facilitate its applications in selectively remove or sensitively analysis of bisphenol A.
关键词:  Hollow molecularly imprinte, Molecular recognition, Nanostructured polymers, Bisphenol A
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