[ACIE] 我室郑南峰教授、林水潮工程师、唐紫超教授发表论文:Microporous Cyclic Titanium-Oxo Clusters with Labile Surface Ligands

我室郑南峰教授、林水潮工程师、唐紫超教授在  ACIE 发表论文:Microporous Cyclic Titanium-Oxo Clusters with Labile Surface Ligands



By combining the use of ethylene glycol and monocarboxylic acid as surface ligands, a series of cyclic Ti-oxo clusters with permanent microporosity are successfully synthesized. With a cyclic {Ti32O16} backbone made of eight Ti4 cages arranged in a zigzag fashion, the clusters have a "donut" shape with inner diameter of 8.3 Å, outer diameter of 26.9 Å and height of 10.4 Å. While both inner and outer walls of the "donut" clusters are modified by double-deprotonated ethylene glycolates, their upper and lower surfaces are bound by carboxylates and mono-deprotonated ethylene glycolates. The clusters are readily packed into one-dimensional tubes which are further arranged in two different modes into crystalline microporous solids with surface areas over 660 m2/g. Moreover, the mono-deprotonated ethylene glycolates on the clusters are highly exchangeable by other alcohols, providing a nice platform for creating microporous solids or films with a wide variety of surface functionalities.