高双折射的酸盐协调聚合物:可极化C-X键 (X = Cl, Br) 的作用
Michael J Katz1, Daniel B Leznoff
1Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6.
Journal of the American Chemical Society
|December 4, 2009
概括
结合键的新协调聚合物表现出高的双断率,为先进的光学材料提供了设计策略. 与没有素替代剂的类似化合物相比,这些材料表现出增强的光学性能.
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
- 晶体学 晶体学是指结晶学.
背景情况:
- 协调聚合物是具有多种应用的晶体材料.
- 对光学技术而言,材料的双重突破是至关重要的.
- 基于二的配体在协调化学中很常见.
研究的目的:
- 合成和描述新的协调聚合物.
- 测量这些新型材料的双断率.
- 为了研究结构和光学特性之间的关系.
主要方法:
- 合成了四种新的协调聚合物:Mn ((Clterpy) [Au ((CN) ((2)) ],Mn ((Brterpy) [Au ((CN) ((2)) ],Pb ((Clterpy) [Au ((CN) ((2)) ],Pb ((Brterpy) mu-OH ((2)) ],以及Mn ((Clterpy) [Au ((CN) ((2)) ]和Pb ((Brterpy) mu-OH ((2)) ].
- 使用X射线衍射进行结构性表征.
- 沿着主要晶体生长方向测量双折值.
主要成果:
- 合成的聚合物表现出一维的链结构.
- 测量到的双折值为0.378(19),0.50(3),0.38(2) 和0.26(3).
- 高双折度与特皮里丁单元的对齐以及碳化合物键的位置相关.
结论:
- 可极化碳化合物键是有效的设计元素,用于增强协调聚合物中的双折射.
- 研究的聚合物与缺乏素替代剂的相关系统具有显著或可比的双断层.
- 这些发现为设计具有定制光学特性的材料提供了洞察力.
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