Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity | |
Zhang, Zhong1,2; Chen, Lingxin1 ; Yang, Fangfang1; Li, Jinhua1; Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. lxchen@yic.ac.cn; jhli@yic.ac.cn
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| 发表期刊 | RSC ADVANCES
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| ISSN | 2046-2069 |
| 2014 | |
| 卷号 | 4期号:60页码:31507-31514 |
| 关键词 | Solid-phase Extraction Precipitation Polymerization Freundlich Isotherm Nanoparticles Recognition Surface Proteins Microspheres Separation Matrix |
| DOI | 10.1039/c4ra03282a |
| 产权排序 | [Zhang, Zhong; Chen, Lingxin; Yang, Fangfang; Li, Jinhua] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Zhang, Zhong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | Core-shell molecularly imprinted polymers (CS-MIPs) have aroused increasing interest owing to their easy accessibility and favorable mass transfer. Herein, we explore the correlation between shell thickness and binding capacity by using Sudan I as template molecule to prepare different CS-MIPs at the surface of carboxyl polystyrene through emulsion polymerization with a two-step temperature-rising process. Extensive characterization was performed using techniques such as SEM/TEM, FT-IR, BET, and TGA. Main factors were systematically studied such as the amount of prepolymer solution, the amount of SDS, and the temperature step. Under the optimized conditions, CS-MIPs with a shell thickness of 2.60 mu m presented the highest binding capacity of 30.1 mu mol g(-1) and the most rapid mass transfer rate. A uniform sphere model was constructed, and it was found that template molecules located in the spherical MIPs with a diameter of 5.20 mu m will be completely eluted, thereby attaining the maximum binding capacity. The static adsorption isotherm followed the Langmuir-Freundlich adsorption model, and the fast kinetics obeyed the pseudo-second-order kinetics model. High recognition specificity for Sudan I with respect to its analogues was displayed, with an imprinting factor of 2.7. The establishment of a critical value of shell thickness provides new insights into the preparation methodology and molecular recognition mechanism of core-shell imprinted polymers.; Core-shell molecularly imprinted polymers (CS-MIPs) have aroused increasing interest owing to their easy accessibility and favorable mass transfer. Herein, we explore the correlation between shell thickness and binding capacity by using Sudan I as template molecule to prepare different CS-MIPs at the surface of carboxyl polystyrene through emulsion polymerization with a two-step temperature-rising process. Extensive characterization was performed using techniques such as SEM/TEM, FT-IR, BET, and TGA. Main factors were systematically studied such as the amount of prepolymer solution, the amount of SDS, and the temperature step. Under the optimized conditions, CS-MIPs with a shell thickness of 2.60 mu m presented the highest binding capacity of 30.1 mu mol g(-1) and the most rapid mass transfer rate. A uniform sphere model was constructed, and it was found that template molecules located in the spherical MIPs with a diameter of 5.20 mu m will be completely eluted, thereby attaining the maximum binding capacity. The static adsorption isotherm followed the Langmuir-Freundlich adsorption model, and the fast kinetics obeyed the pseudo-second-order kinetics model. High recognition specificity for Sudan I with respect to its analogues was displayed, with an imprinting factor of 2.7. The establishment of a critical value of shell thickness provides new insights into the preparation methodology and molecular recognition mechanism of core-shell imprinted polymers. |
| 文章类型 | Article |
| 资助机构 | Chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | SOLID-PHASE EXTRACTION ; PRECIPITATION POLYMERIZATION ; FREUNDLICH ISOTHERM ; NANOPARTICLES ; RECOGNITION ; SURFACE ; PROTEINS ; MICROSPHERES ; SEPARATION ; MATRIX |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000341298000001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8782 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. lxchen@yic.ac.cn; jhli@yic.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhong,Chen, Lingxin,Yang, Fangfang,et al. Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity[J]. RSC ADVANCES,2014,4(60):31507-31514. |
| APA | Zhang, Zhong,Chen, Lingxin,Yang, Fangfang,Li, Jinhua,Chen, LX ,&jhli@yic.ac.cn.(2014).Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity.RSC ADVANCES,4(60),31507-31514. |
| MLA | Zhang, Zhong,et al."Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity".RSC ADVANCES 4.60(2014):31507-31514. |
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