Perfluoroadipic bis(trialkoxysilylpropyl)amide was synthesized as a mixture of five compounds with the general formula (EtO) n (MeO)3-n Si(CH2)3NHC(O)(CF2)4C(O)NH(CH2)3-Si(OMe) n (OEt)3-n (1, n = 1, 2). Hydrolysis of this product by a specified amount of water (1: 4) gave oligomers EtO[(HO)(EtO)Si(CH2)3NH(O)C(CF2)4C(O)NH(CH2)3Si(OEt)2O]nH ( n = 7–9). From oligomer solutions, transparent glassy thermally stable films were obtained. The film material was studied by IR spectroscopy, atomic force microscopy, transmission electron microscopy, and powder X-ray diffraction. Compound 1 and oligomers can efficiently solvate lanthanide diketonate complexes. They displace water from the metal coordination sphere, and this water is then spent for hydrolysis of trialkoxysilyl groups. The luminescence intensity of matrix films based on the oligomers depends on the concentration of lanthanide complexes and is very low at 7nexc = 330 nm, whereas the luminescence intensity of the Eu3+ cation is very high.
合成
全氟己二酸双(三烷氧基甲
硅烷基丙基)酰胺,为五种化合物的混合物,通式为 (EtO) n (MeO)3-n Si(
CH2)3NHC(O)(
CF2)4C(O)NH( )3-Si (OMe) n (OEt)3-n (1, n = 1, 2)。该产物用一定量的
水(1:4)
水解,得到低聚物 EtO[(HO)(EtO)Si( )3NH(O)C(
CF2)4C(O)NH( )3Si(OEt)2O ]nH (n = 7–9)。从低聚物溶液中获得透明
玻璃状热稳定薄膜。通过红外光谱、原子力显微镜、透射电子显微镜和粉末X射线衍射研究了薄膜材料。化合物1和低聚物可以有效地溶剂化
镧系二酮配合物。它们从
金属配位球中置换
水,然后将这些
水用于三烷氧基甲
硅烷基的
水解。基于低聚物的基质薄膜的发光强度取决于稀土配合物的浓度,并且在7nexc = 330 nm处非常低,而Eu3+阳离子的发光强度非常高。