由三碳酸连接剂衍生而成的多孔晶体,具有两种不同的结合基因
Antek G Wong-Foy1, Olivier Lebel, Adam J Matzger
1Department of Chemistry, Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA.
Journal of the American Chemical Society
|December 7, 2007
概括
研究人员使用一种新的有机链接剂制造了一种高度多孔的协调聚合物. 这种材料具有特殊的表面积和在低温下显著的吸收能力.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学 有机化学
- 超分子化学 超分子化学
背景情况:
- 多孔协调聚合物 (PCP) 是使用金属离子和有机链接剂合成的.
- 开发具有高表面积和特定气体吸收特性的PCP对于气体储存和分离的应用至关重要.
- 减少对称的有机连接器为创建新型PCP架构提供了机会.
研究的目的:
- 通过减少对称性的有机链接剂来证明一种高度多孔的协调聚合物的合成.
- 描述所得到材料的结构特征和孔隙性.
- 为了评估合成的协调聚合物的储能.
主要方法:
- 使用双-3,4',5-三酸和Cu (II) 离子进行溶热合成.
- 协调聚合物的结构特征.
- 在低温 (77K) 时进行气体吸附分析 (H2吸收).
主要成果:
- 成功合成了一种具有非常高孔性的[3,4,6]连接协调聚合物 (BET表面积 = 3100 m2/g).
- 该结构独特地结合了双核Cu(II) 轮图案和三核Cu(II) 集群.
- 该材料在45巴时显示出显著的过度重力测量H2吸收5.7%的重量%,在低压下吸收显著.
结论:
- 减少对称的有机连接剂对于设计先进的多孔协调聚合物是有效的.
- 合成的材料对储存应用具有有前途的特性.
- 在框架内不同铜集群类型的共存有助于其独特的特性.
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