Thermal activation of 1 gives a desolvated phase, [Zn(In-4-ba)]n (1′), as supported by TG trace. Of particular note, reversible crystal-to-crystal transformations between solvated 1 and desolvated 1′ have been achieved upon decoordination and recoordination of the py ligands, as evidenced by XRPD patterns, IR spectra, and TG diagrams. The photoluminescence properties of as-synthesized 1, desolvated 1′
基于
酰亚胺的O供体
配体4-羧基苯基-1,3-二氧代异
吲哚啉-5-羧酸(H 2 In-4-ba)和一种Zn(II)配位聚合物[Zn(In-4-ba )(py)2 ] n(1,py =
吡啶),已经合成。X射线单晶衍射表明1具有准3 1螺旋链结构,该结构显示一维至二维(1D→2D)延伸是具有相同螺旋度的连续交织多螺旋的同手性层。这些同手性层以相反的手性共存使得1的单个晶体呈外消旋方式。热重分析(TG)表明1表现出接近440°C的高热稳定性。1的热活化得到去溶剂化的相[Zn(In-4-ba)] n(1'),由TG迹线支持。特别值得注意的是,通过py
配体的去配位和再配位,已经实现了溶剂化1和去溶剂化1'之间的可逆晶体间转换,如XRPD图,IR光谱和TG图所证明的。合成后的1,去溶剂化的1'和已溶解的1'的光致发光特性/ py也已经研究过。它们都显示出分别位于486、492和486 nm处的发射带,其