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题名: Chromatographic efficiency comparison of polyhedral oligomeric silsesquioxanes-containing hybrid monoliths via photo- and thermally-initiated free-radical polymerization in capillary liquid chromatography for small molecules
作者: Wang, Hongwei1, 2, 3;  Ou, Junjie1;  Liu, Zhongshan1, 2;  Lin, Hui1, 2;  Peng, Xiaojun3;  Zou, Hanfa1
关键词: Hybrid monoliths ;  Methacrylate epoxy cyclosiloxane ;  POSS ;  Free-radical polymerization ;  2,2-Dimethoxy-2-phenylacetophenone ;  Photochemical initiation
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2015-09-04
DOI: 10.1016/j.chroma.2015.07.085
卷: 1410, 页:110-117
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: Monolithic poly(methacrylate epoxy cyclosiloxane-co-polyhedral oligomeric silsesquioxanes) (epoxy-MA-PUSS) capillary columns have been prepared via either photo- or thermally-initiated polymerization of the corresponding monomers using a 1-propanol/PEG 400 mixture as porogens. Photochemical polymerization was accomplished by irradiation of the UV-transparent capillary for 10 min at room temperature, while thermal polymerization was performed at 55 degrees C, 60 degrees C or 65 degrees C for 18 h. The evaluation of chromatographic property for two hybrid epoxy-MA-PUSS monoliths was carried out. The results indicate that hybrid monoliths fabricated by photochemical initiation exhibit higher column efficiency (97,000-98,400 plates/m) than those synthesized by thermal polymerization (41,100-48,000 plates/m) in cLC. The higher efficiency of photo-initiated hybrid monoliths is closely related to lower eddy dispersion (A-term) and mass transfer resistance (C-term). (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: HIGH-FLOW CHARACTERISTICS ;  MACROPOROUS POLYMERS ;  FUNCTIONAL MONOMER ;  POROUS MATERIALS ;  COLUMNS ;  NANOCOMPOSITES ;  SEPARATIONS ;  CATALYSIS
语种: 英语
WOS记录号: WOS:000360415900013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146500
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Natl Chromatog R&A Ctr, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China

Recommended Citation:
Wang, Hongwei,Ou, Junjie,Liu, Zhongshan,et al. Chromatographic efficiency comparison of polyhedral oligomeric silsesquioxanes-containing hybrid monoliths via photo- and thermally-initiated free-radical polymerization in capillary liquid chromatography for small molecules[J]. JOURNAL OF CHROMATOGRAPHY A,2015,1410:110-117.
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