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题名:
Switchable zipper-like thermoresponsive molecularly imprinted polymers for selective recognition and extraction of estradiol
作者: Xiong, Huihuang1,2; Wu, Xiaqing1,2; Lu, Wenhui2; Fu, Junqing2; Peng, Hailong1,3; Li, Jinhua2; Wang, Xiaoyan2,4; Xiong, Hua1; Chen, Lingxin2
刊名: TALANTA
ISSN号: 0039-9140
出版日期: 2018
卷号: 176, 页码:187-194
关键词: Molecularly imprinted polymers ; Thermoresponsive ; Zipper-like ; Estradiol ; Dispersive solid-phase extraction
DOI: 10.1016/j.talanta.2017.08.019
产权排序: 第2完成单位
通讯作者: Xiong, Hua(Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China) ; Chen, Lingxin(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China)
英文摘要: Zipper-like thermoresponsive molecularly imprinted polymers (MIPs) were prepared based on interpolymer complexation via the synergy of dual functional monomers of acrylamide (AAm) and 2-acrylamide-2-methyl propanesulfonic acid (AMPS) for selective recognition and extraction of estradiol (E2) by temperature regulation. The resulting E2-MIPs attained controlled adsorption and release of E2 in response to temperature change, with higher adsorption capacity (8.78 mg/g) and stronger selectivity (imprinting factor was 3.18) at 30 degrees C compared with that at 20 and 40 degrees C; the zipper-like interpolymer interaction between poly(AAm) and poly(AMPS) enabled switchable molecular recognition. The adsorption processes obeyed Langmuir isotherm and pseudo-second-order kinetic models. High recognition selectivity of the MIPs toward E2 was achieved over its structural analogues, and good reusability was displayed over 86% recovery after six adsorption-desorption cycles. Accordingly, the E2-MIPs were empolyed as new adsorbents for selective dispersive solid-phase extraction of E2, and offered low limits of detection and quantification of 4.81 and 16.03 mu g/L, respectively. Recoveries from goat milk samples ranged from 76.2% to 89.7% with the precisions (relative standard deviations, n = 3, %) of 2.8-3.7% at 30 degrees C. The intelligent E2-MIPs combining good adsorption, special recognition and temperature sensitivity proved to be a promising alternative to the selective identification and controlled extraction/removal of E2 in complicated samples by simple temperature-responsive regulation.
研究领域[WOS]: Chemistry
项目资助者: National Natural Science Foundation of China(21477160, 21667018, 31660482) ; National Defense Science and Technology Innovation Project of Chinese Academy of Sciences(CXJJ-16M254)
关键词[WOS]: SOLID-PHASE EXTRACTION ; BISPHENOL-A ; LIQUID-CHROMATOGRAPHY ; ENVIRONMENTAL WATER ; PHENOLIC-COMPOUNDS ; MILK SAMPLES ; 17-BETA-ESTRADIOL ; SURFACE ; TEMPERATURE ; PERFORMANCE
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000412610100025
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内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/23462
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Nanchang Univ, Sch Resources Environm & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China
4.Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China

Recommended Citation:
Xiong, Huihuang,Wu, Xiaqing,Lu, Wenhui,et al. Switchable zipper-like thermoresponsive molecularly imprinted polymers for selective recognition and extraction of estradiol[J]. TALANTA,2018,176:187-194.
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