有序分子界面诱导的二维限域反应制备聚合物超薄纳米片
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- 英文论文题名：Organized Molecular Interface-Induced Noncrystallizable Polymer Ultrathin Nanosheets with Ordered Chain Alignment
- 论文作者：靳健
- 英文论文作者：Jian Jin ; Suzhou Institute of Nanotech & Nanobionics ; Chinese Academy of Science
- 年：2016
- 作者机构：中科院苏州纳米技术与纳米仿生研究所;
- 论文关键词：聚合物超薄纳米片 ; 二维限域反应 ; 双分子膜 ; 有序分子界面
- 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：O631.5;TB383.1
- 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：224k
- 原文格式：D
- 会议级别：全国
摘要
二维纳米材料的发展依赖于可控的、高质量的制备方法。获得纳米级甚至原子级可控厚度的有机聚合物超薄纳米片仍是巨大的挑战。我们提出利用二维限域反应制备有机聚合物超薄纳米片的思路。以一种液晶双分子膜Lamellar结构为模板体系,该双分子膜与水形成双分子膜/水层/双分子膜的交替层状有序结构,水层的厚度在纳米尺寸可通过质量比进行精确调控。将高分子聚合反应控制在水层中发生,可制备出几纳米厚度的大面积聚合物超薄纳米片。同时,由于双分子膜形成的有序分子界面与聚合物单体间存在氢键等分子间弱相互作用力,可诱导聚合物单体沿二维有序分子界面的定向有序排列,由此得到的聚合物纳米片内聚合物链呈有序排列。以聚吡咯纳米片为例,制备得到了聚合物链有序排列半晶体结构的大面积聚吡咯纳米片,由于片内有序的链排列,使得该聚吡咯纳米片表现出超高的电导性能。
The orientation and state of organization of polymer chains play significant roles in determining the final properties and functions of these materials. Unlike most semicrystalline polymers, which have an inherent driving force toward crystallization, the means to control chain packing in noncrystallizable polymers is still restricted and remains a challenge. We report herein a 2D soft template-directed fabrication for ultrathin polyacrylamide nanosheets with a thickness as low as 3.5 nm and large dimensions(>20?m). More importantly, the polymer chains in the nanosheets produced are well aligned with a clear interchain spacing. It functions as a 2D orientation template to align the monomers in an orderly manner along the in-plane direction of the bimolecular membrane via hydrogen bonding.
The orientation and state of organization of polymer chains play significant roles in determining the final properties and functions of these materials. Unlike most semicrystalline polymers, which have an inherent driving force toward crystallization, the means to control chain packing in noncrystallizable polymers is still restricted and remains a challenge. We report herein a 2D soft template-directed fabrication for ultrathin polyacrylamide nanosheets with a thickness as low as 3.5 nm and large dimensions(>20?m). More importantly, the polymer chains in the nanosheets produced are well aligned with a clear interchain spacing. It functions as a 2D orientation template to align the monomers in an orderly manner along the in-plane direction of the bimolecular membrane via hydrogen bonding.
引文
[1]Qin,H.;Li,F.;Wang,D.;Lin,H.;Jin,J*.ACS Nano 2016,10:948.
[2]Yang,Y.;Wang,D.;Wu,Y.;Tian,X.;Qin,H.;Hu,L.;Zhang,T*.;Ni,W.;Jin,J*.Macromol.Rapid Commun.2016,37:590.
[2]Yang,Y.;Wang,D.;Wu,Y.;Tian,X.;Qin,H.;Hu,L.;Zhang,T*.;Ni,W.;Jin,J*.Macromol.Rapid Commun.2016,37:590.