A new luminescent molecular based terbium hybrid material containing both organic polymeric chains and inorganic silica networks

作者：Sheng Kai; Yan Bing^*

来源：Journal of Materials Science: Materials in Electronics , 2010, 21(1): 65-71.

DOI：10.1007/s10854-009-9871-x

We have synthesized the ternary organic/inorganic/polymeric terbium hybrid material (ACAC-Si)-Tb-PVP [ACAC = acetylacetone; PVP = poly(4-vinylpyridine)]. Firstly, the ACAC was modified through the hydrogen transfer addition reaction with a cross-linking reagent 3-(triethoxysilyl)-propyl isocyanate (TEPIC) to obtain a functional molecular bridge ACAC-Si which subsequently coordinated with Tb(3 ) and thus formed the inorganic Si-O-Si networks with TEOS (tetraethoxysilane) through hydrolysis and polycondensation process, and PVP acted as organic polymeric chains was synthesized using 4-vinylpyridine as the monomer after coordination with Tb(III) in the presence of BPO (Benzoyl Peroxide). For comparison, the binary hybrid material Tb-(ACAC-Si) was also prepared. The properties of the two hybrid materials were characterized in detail. The results reveal that the terbium complex was embedded into the organic polymer matrix by covalent bond with uniform microstructure. Furthermore, the distinction of the excitation spectrum between the binary and ternary hybrid materials suggests that the introduction of the polymeric organic chain component changed the microenvironment around the coordination sphere of the terbium. The emission spectrum exhibit the strong characteristic fluorescence of Tb(3 ), which accounts for the efficient intro-molecular energy transfer taken place in the two hybrid materials.

• 出版日期2010-1
• 单位同济大学