检索结果-南通市图书馆

Monodisperse hollow silica spheres： An in-depth scattering analysis

Nano Research 2016年第5期9卷 1366-1376页

作者： Pia Ruckdeschel Martin Dulle Tobias Honold Stephan Forster Matthias Karg Markus Retsch Physical Chemistry 1 - Polymer Systems University ofBayreuth Universitatsstr. 30 95447 Bayreuth Germany Physical Chemistry 1 University of Bayreuth Universitatsstr. 30 95447 Bayreuth Germany Physical Chemistry 1 - Colloidal Systems University of Bayreuth Universitatsstr. 30 95447 Bayreuth Germany

Herein, we fabricate hollow silica nanoparticles with exceptionally narrow size distributions that inherently possess two distinct length scales-tens of nanometers with regards to the shell thickness, and hundreds of nanometers in regards to the total diameter. We characterize these structures using dynamic and static light scattering （DLS and SLS）, small angle X-ray scattering （SAXS）, and transmission electron microscopy （TEM）, and we demonstrate quantitative agreement among all methods. The ratio between the radius of gyration （SLS） and hydrodynamic radius （DLS） in these particles equals almost unity, corresponding to ideal capsule behavior. We are able to resolve up to 20 diffraction orders of the hollow sphere form factor in SAXS, indicating a narrow size distribution. Data from light and X-ray scattering can be combined to a master curve covering a q-range of four orders of magnitude assessing all hierarchical length scales of the form factor. The measured SLS intensity profiles noticeably change when the scattering contrast between the interior and exterior is altered, whereas the SAXS intensity profiles do not show any significant change. Tight control of the aforementioned length scales in one simple and robust colloidal building block renders these particles suitable as future calibration standards.

关键词： hollow sphere silica nanoparticle small angle X-ray scattering light scattering nanoscale characterization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Peptoid-based hierarchically-structured biomimetic nanomaterials: Synthesis, characterization and applications

引用

Science China Materials 2020年第7期63卷 1099-1112页

作者： Jianli Liu Bin Cai Lifeng Cui Chun-Long Chen School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China Physical Sciences Division Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichland WA 99352USA

Peptoids(or poly-N-substituted glycines)are a promising class of bioinspired sequence-defined polymers due to their highly efficient synthesis,high chemical stability,enzyme hydrolysis resistance,and *** tuning the side chain chemistry of peptoids,it allows for precise control over sequences and achieving a large side-chain *** to these unique features,in the last several years,many amphiphilic peptoids were designed as highly tunable building blocks for the preparation of biomimetic nanomaterials with well-defined hierarchical structures and desired ***,we provide an overview of the recent achievements in this area by dividing them into the following three ***,mica-and silica-templated peptoid selfassembly are *** presence of inorganic substrates provides the guarantee of investigating their selfassembly mechanisms and interactions between peptoids and substrates using nanoscale characterization techniques,particularly in situ atomic force microscopy(AFM)and AFMbased dynamic force spectroscopy(AFM-DFS).Second,solution-phase self-assembly of peptoids into nanotubes and nanosheets is presented,as well as their self-repair ***,the applications of peptoid-based nanomaterials are outlined,including the construction of catalytic nanomaterials as a template and cytosolic delivery as cargoes.

关键词： peptoid self-assembly biomimetic nanomaterial nanoscale characterization assembly mechanism

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

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

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

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：