Synthesis and nonlinear optical properties of functionalised polydiacetylenes and their complexes with transition metals
作者:M. A. Camacho、Ajoy K. Kar、W. Edward Lindsell、Christopher Murray、Peter N. Preston、Brian S. Wherrett
DOI:10.1039/a900056i
日期:——
New polydiacetylenes (PDAs) have been prepared in which a ligating 2,2′-bipyridyl substituent is incorporated in the side-chain, 3a-d. The formation of complexes of these polymers, and of a related (diethylamino)alkyl substituted PDA 4, with transition metals has been studied. Coordination polymers containing nickel(II) 5a,b, copper(II) 5c,d, ruthenium(II) 6 and molybdenum(O) 7a-c have been formed and characterised spectroscopically by comparison with appropriate model coordination compounds, including species derived from corresponding monomeric 1,3-diynes 1. The nonlinear optical properties of PDA 4 and the coordination polymers 5-7 in solution have been investigated by the z-scan procedure. Values for the nonlinear absorption coefficient, α
2
, and the nonlinear refractive index, n
2
, have been derived and these are discussed in relation to the structures of the PDAs.
已制备出新的聚二乙炔 (PDA),其中在侧链 3a-d 中引入了连接 2,2'-联吡啶取代基。已经研究了这些聚合物以及相关的(二乙氨基)烷基取代的PDA 4 与过渡金属的复合物的形成。已形成含有镍(II) 5a,b、铜(II) 5c,d、钌(II) 6 和钼(O) 7a-c 的配位聚合物,并通过与适当的模型配位化合物(包括源自以下物质的物质)进行比较进行光谱表征相应的单体 1,3-二炔 1. 通过 z 扫描程序研究了溶液中 PDA 4 和配位聚合物 5-7 的非线性光学性质。非线性吸收系数 α 的值
2
,以及非线性折射率,n
2
,已经导出,并结合 PDA 的结构对这些进行了讨论。