将疏水的乙基,丁基或己基引入荧光多孔配位框架[Zn 2(fda)2(bpy)](LMOF-202,H 2 fda = 9 H-芴-2,7-二羧酸,bpy = 4,4'-联吡啶)以改善水稳定性并调节氧敏感性。长的己基具有令人满意的水稳定性,但其氧敏感性较低(在1 bar O 2(1 bar = 10 5 Pa)下猝灭的荧光强度为70.8%)。相反,较短的侧基具有较高的氧敏感性(93.9%的荧光在1 bar O 2下猝灭)和较低的水稳定性。O 2的Stern-Volmer曲线的推导来自线性形式的发光淬灭数据可用于检测发光框架中的痕量杂质,比常规方法(例如粉末X射线衍射)灵敏得多。以固溶方式混合乙基和己基带来了高的氧敏感性(96.4%的荧光在1 bar O 2下猝灭)和高的水稳定性。
Two Manganese(II) Complexes with a Bulky Fluorene-Based Carboxylate Ligand: Syntheses, Crystal Structures, and Luminescent Properties
作者:Junjie Wang、Yunfeng Shi、Sujuan Li
DOI:10.1002/zaac.201100155
日期:2011.9
coordination possibilities of fluorene-based ligands, two manganese(II) complexes with the ligand 9,9-dibutyl-9H- fluorene-2,7-carboxylate (L) were synthesized and characterized: (Mn2(L)2(DMF)3)∞ (1) and (Mn2(L)2(DMF))∞ (2). X-ray single-crystal diffraction analyses show that complex 1 has a two-dimensional (2D) (4,4) structure, whereas complex 2 consits of a three-dimensional (3D)