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学科主题: 物理化学
题名: An Organic-silica Hybrid Monolithic Column with Stronger Electroosmotic Flow for Capillary Electrochromatography
作者: Wu MH(吴明火) ;  Wu RA(吴仁安) ;  Li RB(李瑞宾) ;  Dong J(董靖) ;  Zou HF(邹汉法)
会议名称: The 24th International Symposium on Micro-scale Bioseparation,
会议日期: 2009-10-19
出版日期: 2009-10-19
会议地点: 中国
通讯作者: 邹汉法
部门归属: 十八室
主办者: 大连化学物理研究所
摘要: Capillary electrochromatography (CEC) has developed rapidly in recent years and is considered a promising separation technique due to its high efficiency and peak capacity in the microscale separations. In CEC, the electroosmotic flow (EOF) is the driving force of the mobile phase and the flow velocity of the mobile is mainly depended on the EOF and the applied separation voltage. The stronger EOF and higher applied separation voltage will lead to the higher flow velocity, which is required for fast separations. However, the bubble formation is the major disadvantage for using higher applied voltage in CEC. Herein, we present a new organic-silica hybrid monolithic column prepared with (3-chloropropyl)tri- methoxysilane (CTMS) and tetramethoxysilane (TMOS). Then, it was used as starting material reacted with 1,1,4,7,10,10-hexamethyltriethyl-enetetramine (HMTETA). The formation of the quaternary ammonium groups from this reaction would generate an anodic EOF from cathode to anode in CEC. After a further modification of this monolithic column by bromopropionitrile (BPN), the enriched quaternary ammonium groups on the monolithic matrix surface were obtained and consequently a strong EOF of greater than 7.2×10-4 cm2/(v•s) was observed in CEC.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113860
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Wu MH,Wu RA,Li RB,et al. An Organic-silica Hybrid Monolithic Column with Stronger Electroosmotic Flow for Capillary Electrochromatography[C]. 见:The 24th International Symposium on Micro-scale Bioseparation,. 中国. 2009-10-19.
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