Synthesis, structure, and photoluminescence properties of lanthanide based metal organic frameworks and a cadmium coordination polymer derived from 2,2′-diamino-trans 4,4′-stilbenedicarboxylate
作者:Saki T. Golafale、Conrad W. Ingram、John Bacsa、Alexander Steiner、Kyril M. Solntsev
DOI:10.1016/j.ica.2018.04.005
日期:2018.6
Abstract Two isostructural lanthanide-based metal - organic frameworks, [Ln(C16H12N2O4)(CHO2)(OH2)·2(C5H11NO)]}n, Ln = Yb (1) and Tm (2), and a cadmium(II) coordination polymer,[Cd2(C16H12N2O4)(NO3)·4(C3H7NO)]}n, were synthesized by the combination of the respective metal nitrate and 2,2′-diamino-trans 4,4′-stilbenedicarboxylate (C16H12N2O4) under solvothermal conditions [C5H11NO = diethylformamide
摘要两种基于等价镧系元素的金属有机骨架,[Ln(C16H12N2O4)(CHO2)(OH2)·2(C5H11NO)]} n,Ln = Yb(1)和Tm(2),以及镉(II)分别通过金属硝酸盐和2,2'-二氨基-反式4,4'-二苯乙烯二羧酸盐(C16H12N2O4)的组合,合成了配位聚合物[Cd2(C16H12N2O4)(NO3)·4(C3H7NO)]} n溶剂热条件[C5H11NO =二乙基甲酰胺,C3H7NO =二甲基甲酰胺]。通过X射线单晶分析,X射线粉末衍射,傅立叶变换红外光谱,元素分析,热重分析和固态光致发光光谱来确定它们的结构。两种镧系元素结构都是无限的三维非穿透性网络,具有横截面尺寸[30 A x 12 A]的非常大的菱形可及通道,并且氨基官能团伸入通道中。镉基结构是一维配位聚合物,其中羧酸盐和氨基均配位镉原子,这导致配体的刚性大大提高。这三个网络均显示出基于配体的荧光,而