检索结果-南通市图书馆

Facile preparation of compact LTA molecular sieve membranes on polyethyleneimine modified substrates

Chinese Chemical Letters 2021年第3期32卷 1086-1088页

作者： Fangge Chen Yanhong Li Aisheng Huang Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of ChemistryEast China Normal UniversityShanghai 200241China

A facile preparation strategy was proposed for preparation of compact zeolite LTA membranes on polyethyleneimine(PEI)modified substrates without *** the functionalization of substrates by using PEI,compact LTA membranes can be formed on various kinds of substrates.A well-intergrown and phase-pure LTA membrane with a thickness of about 3.0μm is successfully prepared on the a-Al_(2)O_(3)disk after crystallization for 24 h at 60℃.Besides LTA membrane,wellintergrown zeolite FAU membranes can also be formed on PEI-modified a-Al_(2)O_(3)substrates,suggesting the universality of this *** zeolite LTA membranes synthesized on PEI-modified a-Al_(2)O_(3)tubes were evaluated for the separation of alcohols/water mixture through *** as-synthesized zeolite LTA membranes display high pervaporation *** the separation of 10 wt%isopropanol/water solution at 90℃,a high separation factor of44991 and a water flux of 1.73 kg m^(-2)h^(-1)are achieved.

关键词： Zeolite LTA membrane Polyethyleneimine modification covalent modification Alcohols/water separation Membrane separation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Emerging approaches to probing ion channel structure and function

引用

Neuroscience Bulletin 2012年第4期28卷 351-374页

作者： Wei-Guang Li Tian-Le Xu Neuroscience Division Department of Biochemistry and Molecular Cell BiologyInstitute of Medical SciencesShanghaiJiao Tong University School of MedicineShanghai 200025China

Ion channels,as membrane proteins,are the sensors of the *** act as the first line of communication with the world beyond the plasma membrane and transduce changes in the external and internal environments into unique electrical signals to shape the responses of excitable *** of their importance in cellular communication,ion channels have been intensively studied at the structural and functional ***,we summarize the diverse approaches,including molecular and cellular,chemical,optical,biophysical,and computational,used to probe the structural and functional rearrangements that occur during channel activation（or sensitization）,inactivation（or desensitization）,and various forms of *** emerging insights into the structure and function of ion channels by multidisciplinary approaches allow the development of new pharmacotherapies as well as new tools useful in controlling cellular activity.

关键词： ion channel structure and function mutagenesis covalent modification voltage-clamp fluorometry computational chemistry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

covalently Grafting Nonmesogenic Moieties onto Polyoxometalate for Fabrication of Thermotropic Liquid-Crystalline Nanomaterials

Covalently Grafting Nonmesogenic Moieties onto Polyoxometala...

引用

中国化学会第九届全国无机化学学术会议

作者： Chang-Gen Lin Wei Chen Solomon Omwoma Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

Polyoxometalates（POMs） are a class of discrete anionic metal oxides with intriguing physical properties and unmatched range of structures that can range in size from nano to micrometer scale.[1] Incorporation of the nanoscaled POMs into LCs generates novel functional liquid-crystalline nanomaterials[2] and has received increasing attention over recent years. A widely used method to fabricate liquid-crystalline POM nanomaterials is the encapsulation of POM anions into mesogenic or nonmesogenic cationic surfactants. However, few examples based on the covalent modification have been reported, although the covalent approach indeed offers indisputable assets. We herein report for the first time the synthesis and characterization of covalently modified POMs-containing thermotropic liquid-crystalline nanomaterials, in which the nonmesogenic organic moieties are tethered onto the nanoscaled POM cluster. These hybrids are found to be able to self-organize into a well-defined smectic lamellar structure, in which the POM clusters are arranged in a zigzag fashion within the smectic layer, as confirmed by SAXS and HR-TEM measurements.[3] As such, this work provides fascinating perspectives in the design and elaboration of novel POMs-containing liquid-crystalline nanomaterials and may open a new pathway in the development of POMs-containing multifunctional nanosystems.

关键词： Polyoxometalate liquid crystal covalent modification nanomaterial

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：