用表面活性剂和没有表面活性剂准备的分子排序的纳米多孔有机酸盐
Abdelhamid Sayari1, Wenhui Wang
1Centre for Catalysis Research and Innovation (CCRI), Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5. Abdel.sayari@science.uottawa.ca
Journal of the American Chemical Society
|September 1, 2005
概括
研究人员合成了一种具有芳香和烯基基组的新型周期性半孔有机材料. 这一突破展示了材料中的分子排序,独立于孔隙结构或表面活性物质.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 有机化学 有机化学
背景情况:
- 周期性半孔有机 (PMO) 材料是先进的基于的化合物,具有有序的孔结构.
- 现有的PMO合成通常依赖于多种前体或表面活性剂.
- 将各种功能组纳入PMO框架对于定制应用至关重要.
研究的目的:
- 合成第一个含有芳香和烯基功能组的纯周期性半孔性有机.
- 研究合成材料中的结构周期性和分子排序.
- 为了证明在没有表面活性剂或周期性孔系统的情况下实现分子秩序的可能性.
主要方法:
- 单前体合成方法. 单前体合成方法.
- 使用像X射线衍射这样的技术来描述结构周期性.
- 分析毛孔系统的顺序和叶片结构的形成.
主要成果:
- 成功合成了一种纯PMO材料 (O3/2Si-CH=CH-C6H4-CH=CH-SiO3/2) 与芳香和烯基基团一起.
- 观测长距离毛孔系统的顺序和独特的结构周期性 (11.9 Å间隔).
- 在孔壁内形成状二二乙二氧化,有助于分子秩序.
结论:
- 一个新的单一前体路径使复杂的PMO材料的合成成为可能.
- 在框架中的分子排序可以独立于周期性孔隙系统或表面活性剂.
- 这项工作扩大了高级应用的功能化有机材料的范围.
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