基于混合的半结构复合材料的结构分析
Shannon W Boettcher1, Michael H Bartl, Jerry G Hu
1Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|July 7, 2005
概括
研究人员使用三酸改性和块共聚合物制造了高质量的化物半结构薄膜. 这些先进材料具有有序结构,具有特定的组件分布,为新应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 固态化学 固态化学
背景情况:
- 在先进的光学和电子应用中,基于泰坦的半结构薄膜至关重要.
- 控制纳米级架构和组件分布是优化薄膜性能的关键.
研究的目的:
- 制造高光学质量的泰坦亚半结构薄膜,具有控制的对称性.
- 研究混合组件的分布,动态和局部环境.
主要方法:
- 使用三酸 (TFA) 改性前体和PEO-PPO-PEO块共聚合物制造.
- 通过IR/拉曼光谱,在位小角度X射线散射和传输电子显微镜进行表征.
- 固态核磁共振 (NMR) 技术包括 (19) F-->(1) H CP, (13) C{(1) H} 2D异核相关,和 (1) H放松.
主要成果:
- 的TFA坐标,形成由块共聚合物组织成有序的半结构 (立方或二维六角) 的稳定复合体.
- 聚乙烯氧化物 (PEO) 主要属于TFA修饰的.
- 聚烯氧化物 (PPO) 占据了微相分离和与TFA-titania的界面区域.
- 三乙酸 (-CF(3) 组) 在无机成分中随机分布,不形成集群.
结论:
- 该研究成功地制造了订购的泰坦尼亚半结构薄膜,具有受控的组件排列.
- 这些发现阐明了这些混合材料中的结构属性关系.
- 这项工作为设计先进的基于的功能材料提供了基础.
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