二维六方相和层状相银簇组装体及其结构依赖的机械性能
详细信息 查看官网全文
- 英文论文题名：Structure Dependent Mechanical Properties of 2D-Hexagonal and Lamellar Silver Superclusters
- 论文作者：秦肖雲 ; 于伟 ; 罗聃 ; 薛振杰 ; 张振 ; 王铁
- 英文论文作者：Xiaoyun Qin ; Wei Yu ; Dan Luo ; Zhenjie Xue ; Zhen Zhang ; Tie Wang ; Key Laboratory of Analytical Chemistry for Living Biosystems ; Institute of Chemistry ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院化学研究所活体分析化学院重点实验室;
- 论文关键词：组装体 ; 两亲性分子 ; 原子簇 ; 弹性模量
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十四分会：超分子组装与软物质材料
- 语种：中文
- 分类号：O641.3
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十四分会 ; 超分子组装与软物质材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：194k
- 原文格式：D
- 会议级别：全国
摘要
原子组装体如金刚石、石墨等,由于不同共价结合方式导致了完全不同的物理性能。分子组装体则由分子间相互作用力调谐超分子的力学性能~([1])。将组装单元放大到纳米粒子,超粒子的机械性能与其超晶格的结构关联不大。因此,通过压缩组装单元为寡原子簇,可得到同素异形体式的具有结构依赖机械性能的材料。我们通过两亲性分子不同的亲疏水体积比~([2])来设计具有不同堆积结构的银簇组装体:具有不同碳链长度的两亲分子还原银离子得到二维六方相和层状相的寡核原子簇组装体。进一步地,不同结构的银簇组装体展现了不同的弹性模量。调查发现,微观组装结构在调谐寡核银簇组装体的宏观机械性能方面起到决定性作用。该组装体有望应用于医学、传感、电子等方面。
The ordered assembly family has incorporated superatom, supermolecule, superparticle, and now call for a new member to join in considering the succession of unit size. It should be a bridge to link atomic assembly, molecular assembly, and nanoparticle assembly. The present work reports on assemblies of ordered silver clusters through hydrogen bond between the tether molecules. Thus formed assemblies are believed to be the exactly transition state mentioned above considering the comparable size of clusters and ligand molecules. We obtain 2D-hexagonal and lamellar structure by adjusting the tether length of amphiphiles that coordinates clusters together. Furthermore, nanoindentation results indicate that the mechanical properties are different among the various assembly microstructures. Thus formed assemblies exhibit comparable mechanical property with amyloid fibril and present as an intermediate state among superatom and superparticle other than size category.
The ordered assembly family has incorporated superatom, supermolecule, superparticle, and now call for a new member to join in considering the succession of unit size. It should be a bridge to link atomic assembly, molecular assembly, and nanoparticle assembly. The present work reports on assemblies of ordered silver clusters through hydrogen bond between the tether molecules. Thus formed assemblies are believed to be the exactly transition state mentioned above considering the comparable size of clusters and ligand molecules. We obtain 2D-hexagonal and lamellar structure by adjusting the tether length of amphiphiles that coordinates clusters together. Furthermore, nanoindentation results indicate that the mechanical properties are different among the various assembly microstructures. Thus formed assemblies exhibit comparable mechanical property with amyloid fibril and present as an intermediate state among superatom and superparticle other than size category.
引文
[1]Arinstein,A.;Burman,M.;Gendelman,O.;Zussman,E.Nature Nanotech.2007,2:59.
[2]Ma,S.Y.;Hu,Y.;Wang,R.Macromolecules 2015,48:3112.
[2]Ma,S.Y.;Hu,Y.;Wang,R.Macromolecules 2015,48:3112.