Structures and Solvatochromic Phosphorescence of Dicationic Terpyridyl-Platinum(II) Complexes with Foldable Oligo(<i>ortho</i>-phenyleneethynylene) Bridging Ligands
作者:Ming-Xin Zhu、Wei Lu、Nianyong Zhu、Chi-Ming Che
DOI:10.1002/chem.200800394
日期:2008.10.29
complexes, [(tBu3tpy)Pt--(C[triple chemical bond]C--1,2-C6H4)n--C[triple chemical bond]C--Pt(tBu3tpy)][ClO4]2 (1-7, n=1, 2, 3, 4, 5, 6, 8; tBu3tpy=4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine) with foldable oligo(ortho-phenyleneethynylene) linkers were prepared and characterized by spectroscopic methods and/or X-ray crystallographic analyses. In the crystal structures of 32.5 CH3OH, 5CH3CN, and 64
一系列双核有机铂(II)配合物,[(tBu3tpy)Pt-(C [三重化学键] C--1,2-C6H4)n--C [三重化学键] C--Pt(tBu3tpy)] [ClO4] 2(1-7,n = 1,2,3,4,5,6,8; tBu3tpy = 4,4',4''-三叔丁基-2,2':6',制备具有可折叠的寡(邻-亚苯基亚乙炔基)连接基的2′-叔吡啶),并通过光谱法和/或X射线晶体学分析对其进行表征。在32.5 CH3OH,5CH3CN和64 CH3CN的晶体结构中,每个桥接的邻亚苯基亚乙炔基配体均具有部分折叠的构象。在水百分比大于40%的充气水/乙腈混合物中,与乙腈中记录的配合物相比,配合物3-7的发射发生红移并增强。发射能量的红移和增强的发射强度可归因于通过向乙腈中的铂(II)配合物溶液中添加水而引起的分子间和/或分子间相互作用。来自动态光散射和透射电子显微镜研究的数据表明,这些双核铂(