CN102101046A - 一种脲基色谱固定相及其制备方法 - Google Patents
一种脲基色谱固定相及其制备方法 Download PDFInfo
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- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/30—Partition chromatography
- B01D15/305—Hydrophilic interaction chromatography [HILIC]
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/282—Porous sorbents
- B01J20/283—Porous sorbents based on silica
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- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
- B01J20/288—Polar phases
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
- B01J20/289—Phases chemically bonded to a substrate, e.g. to silica or to polymers bonded via a spacer
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
- B01J20/3217—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond
- B01J20/3219—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond involving a particular spacer or linking group, e.g. for attaching an active group
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
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- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
- B01J20/3251—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising at least two different types of heteroatoms selected from nitrogen, oxygen or sulphur
Abstract
本发明涉及液相色谱固定相,键合相末端为脲基,其结构式如下:
Description
技术领域
本发明涉及一种新型液相色谱固定相及其制备方法,具体地说是一种键合相为脲基的新型亲水作用色谱固定相。
技术背景
亲水作用液相色谱模式(HILIC)是近年来发展起来的用于分离强极性化合物的色谱技术[Alpert,A.J.J.Chromatogr.1990,499,177-196;Strege,M.A.Anal.Chem.1998,70,2439-2445;Strege,M.A.et al,Anal.Chem.2000,72,4629-4633;Wang,X.D.et al,J.Chromatogr.A,2005,1083,58-62]。亲水作用色谱的固定相的研发是亲水作用色谱发展和应用的基础。传统的正相色谱固定相,如硅胶,氨基,氰基等可直接用于亲水作用色谱[Guo,Y.et al,J.Chromatogr.A,2005,1074,71-80;Garbis,S.D.et al,Anal.Chem.2001,73,5358-5364],但存在着重现性差和使用寿命短的问题。近年来专门用于亲水作用色谱的新型极性固定相得到了较大发展,包括酰胺类、羟基类、两性离子类等[Guo,Y.et al,J.Chromatogr.A,2005,1074,71-80;Irgum,K.etal,J.Sep.Sci.,2006,29,1784-1821;Jandera,P.,J.Sep.Sci.,2008,31,1421-1431]。发展新型色谱固定相是亲水作用色谱研究和应用的重要方面。
酰胺基团具有很好的极性和亲水性,而且属于中性基团,具有很好的稳定性,十分适合作为亲水色谱固定相,在亲水作用色谱领域得到了较为广泛的应用[Karlsson,G.et al,J.Chromatogr.A,2005,1092,246-249;McNulty,D.E.et al,Molecular & Cellular Proteomics,2008,7,971-980]。脲基具有和酰胺类似的结果,其极性和亲水性很好,而且形成氢键的能力很强,十分适合作为亲水作用色谱固定相。当前,没有使用脲基作为亲水作用色谱固定相的报道和产品。
发明内容
本发明的目的是提供一种新型高效液相色谱固定相及其制备方法。该固定相为键合相为脲基的新型亲水作用色谱固定相。该固定相的制备方法简单,用途广泛。
本发明的技术方案是:高效液相色谱固定相,其特征在于结构为:
其中Silica Gel为硅胶,n=1-6。
本发明还提供了上述固定相的制备方法,其特征在于包括如下步骤:
在乙腈、甲苯或者N,N-二甲基甲酰胺等有机溶剂中加入硅烷偶联剂,搅拌条件下往反应体系中通入氨气,在50~110℃下反应12~24小时。氨气流量为1mL/min~2000mL/min。然后,停止通氨气,在氮气或者氩气氛围保护下,往反应体系中加入经120-160℃干燥6~18小时的微球形硅胶,在60~130℃下反应12~24小时,过滤,依次用二氯甲烷、甲醇、水、甲醇洗涤,所得固体于真空干燥箱中40~80℃条件下干燥6~24个小时,即得脲基硅胶固定相。所用的硅烷偶联剂有如下结构:
其中,X为甲氧基或乙氧基,m=3-8。以每克微球形硅胶计,硅烷偶联剂的用量1-6mmol,有机溶剂用量为4-20mL。
本发明具有如下优点:
1.结构新颖。本发明首次提出以脲基作为高效液相色谱固定相。该固定相结构末端为脲基,具有很好的极性和亲水性,而且具有很强的氢键作用力。
2.应用范围广。本发明提供的脲基固定相是一种普适型亲水作用色谱固定相,对绝大部分极性化合物都具有很好的分离选择性,可广泛用于各类样品分离。
3.制备过程简单可靠,有利于实现产业化。
具体实施方式
下面结合实例,对本发明做进一步说明。实例仅限于说明本发明,而非对本发明的限定。
实施例1
在200mL烧瓶中加入100mLN,N-二甲基甲酰胺和7mL 3-异氰酸酯基丙基三甲氧基硅烷,以5mL/min的流速往反应体系中通入氨气24小时,然后停止通氨气,在氮气保护下往反应体系中加入10g经120℃干燥18小时的微球形硅胶,在100℃下反应24小时,过滤,依次用二氯甲烷、甲醇、水、甲醇洗涤,所得固体于真空干燥箱中80℃条件下干燥12个小时,即得脲基固定相。元素分析:C:3.32%,N:1.43%。红外光谱:1655和1611cm-1处酰胺基团特征吸收峰。元素分析和红外光谱结果证实固定相结构为:
实施例2
在1000mL烧瓶中加入600mL N,N-二甲基甲酰胺和60mL异氰酸酯基三甲氧基硅烷,以100mL/min的流速往反应体系中通入氨气12小时,然后停止通氨气,在氮气保护下往反应体系中加入40g经120℃干燥12小时的微球形硅胶,在110℃下反应24小时,过滤,依次用二氯甲烷、甲醇、水、甲醇洗涤,所得固体于真空干燥箱中40℃条件下干燥12个小时,即得脲基固定相。元素分析:C:4.47%,N:2.05%。红外光谱:1658和1619cm-1处酰胺基团特征吸收峰。元素分析和红外光谱结果证实固定相结构为:
实施例3
与实施例1不同之处在于使用6-异氰酸酯基己基三乙氧基硅烷代替3-异氰酸酯基丙基三甲氧基硅烷。该固定相结构为:
实施例4
与实施例1不同之处在于氨气流速为1mL/min。
Claims (4)
2.一种权利要求1所述固定相的制备方法,其特征在于,包括如下步骤:
在乙腈、甲苯或者N,N-二甲基甲酰胺有机溶剂中加入硅烷偶联剂,搅拌条件下往反应体系中通入氨气,在50~110℃下反应12~24小时;氨气流量为1mL/min~2000mL/min;然后,停止通氨气,在氮气或者氩气氛围保护下,往反应体系中加入经120-160℃干燥6~18小时的微球形硅胶,在60~130℃下反应12~24小时,过滤,依次用二氯甲烷、甲醇、水、甲醇洗涤,所得固体于真空干燥箱中40~80℃条件下干燥6~24个小时,即得脲基硅胶固定相。
4.按照权利要求2所述的制备方法,其特征在于:以每克微球形硅胶计,硅烷偶联剂的用量1-6mmol,有机溶剂用量为4-20mL。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104785230A (zh) * | 2015-03-27 | 2015-07-22 | 武汉大学 | 一种两性键合硅胶固定相及其制备方法和应用 |
CN106560235A (zh) * | 2016-11-24 | 2017-04-12 | 淮阴师范学院 | 有机异氰酸酯及异硫氰酸酯改性凹凸棒土制备方法及其应用 |
CN113680337A (zh) * | 2021-08-24 | 2021-11-23 | 武汉工程大学 | 一种脲基/长链烷基双功能化硅胶固定相的制备方法 |
CN114618459A (zh) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | 一种含多卤素官能团的混合模式色谱固定相及其制备和应用 |
CN114887606A (zh) * | 2022-05-18 | 2022-08-12 | 华谱科仪(大连)科技有限公司 | 含脲基及苯基固定相、其制备方法及其应用 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104785230A (zh) * | 2015-03-27 | 2015-07-22 | 武汉大学 | 一种两性键合硅胶固定相及其制备方法和应用 |
CN104785230B (zh) * | 2015-03-27 | 2017-04-12 | 武汉大学 | 一种两性键合硅胶固定相及其制备方法和应用 |
CN106560235A (zh) * | 2016-11-24 | 2017-04-12 | 淮阴师范学院 | 有机异氰酸酯及异硫氰酸酯改性凹凸棒土制备方法及其应用 |
CN106560235B (zh) * | 2016-11-24 | 2019-09-27 | 淮阴师范学院 | 有机异氰酸酯或异硫氰酸酯改性凹凸棒土制备方法及其应用 |
CN114618459A (zh) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | 一种含多卤素官能团的混合模式色谱固定相及其制备和应用 |
CN113680337A (zh) * | 2021-08-24 | 2021-11-23 | 武汉工程大学 | 一种脲基/长链烷基双功能化硅胶固定相的制备方法 |
CN114887606A (zh) * | 2022-05-18 | 2022-08-12 | 华谱科仪(大连)科技有限公司 | 含脲基及苯基固定相、其制备方法及其应用 |
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