【作者】 刘泉； 邓莉； 孙真荣； 郎建平；

【Author】 Quan Liu;Li Deng;Zhen-Rong Sun;Jian-Ping Lang;College of Chemistry,Chemical Engineering and Materials Science,Soochow University;Department of Physics,East China Normal University;

【机构】 苏州大学材料与化学化工学部； 华东师范大学物理系；

【摘要】 配位聚合物异构是晶体工程中常见现象[1,2],但如何调节其形成则并不容易。前驱簇[Et4N][Tp*WS3(CuBr)3]与CuCN反应通过不同溶剂调控得到四个簇基配聚物异构体,这些聚合物中包含簇/铜比分别为2:2,3:3和两种4:4的环状次级单元。该体系中结构的多样性主要是由Cu的可变配位构型及氰根与Cu很强的结合能力共同决定的。这些聚合物溶液的二阶超极化率(γ)比它们的前驱簇提高了10倍以上。更多还原

【Abstract】 Polymer isomerism is frequently encountered in crystal engineering but remains hard to modulate.Solvent modulation of a W/Cu/S cluster and CuCN reaction system has provided isomeric networks with ring sub-units featuring 2:2,3:3 and two types of 4:4 cluster-to-Cu ratios.This structural diversity is made possible by the adaptable coordination of the Cu(Ⅰ) center coupled with the strong affinity of cyanide anions towards these Cu(Ⅰ) centers.The hyperpolarizability(γ) of these polymeric networks exhibit >10 times enhancement compared to their parent discrete cluster.更多还原