Journal
APPLIED SURFACE SCIENCE
Volume 287, Issue -, Pages 211-217Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2013.09.130
Keywords
Temperature responsive molecularly imprinted sorbents; Yeast; AGET ATRP; Cefalexin; Adsorption
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Funding
- National Natural Science Foundation of China [21107037, 21176107, 21004031]
- Natural Science Foundation of Jiangsu Province [BK2011461, BK2011514]
- National Postdoctoral Science Foundation [2013M530240]
- Postdoctoral Science Foundation funded Project of Jiangsu Province [1202002B]
- Programs of Senior Talent Foundation of Jiangsu University [12JDG090]
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Temperature responsive molecularly imprinted polymers (T-MIPs) were prepared based on the surface of yeast by electron transfer atom transfer radical polymerization (AGET ATRP). The as-prepared T-MIPs were charcterized by FT-IR, SEM, TGA and elemental analysis, which indicated that T-MIPs exhibited thermal stability and composed of temperature responsive imprinted layer. Then T-MIPs were evaluated as sorbents to selectively recognise and release cefalexin (CFX) molecules. The results suggested binding properties of T-MIPs were related to the testing temperature. The maximum adsorption capacity of T-MIPs at 303 K was 59.4 mg g(-1), and the maximum release proportion for T-MIPs at 293 K in water for 24 h was 71.08%. The selective recognition experiments demonstrated high affinity and selectivity of T-MIPs towards CFX over competitive compounds, and the specific recognition of binding sites may be based on the distinct size, structure and functional group to the template molecules. (C) 2013 Elsevier B.V. All rights reserved.
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