TEM which demonstrated the efficiency of the complexation and showed the high dispersion of the metal loading. The successful application of these methods has demonstrated that nanoporous alumina membranes are not only unique supports to incorporate metal complexes, clusters, or colloids but can also be regarded as functional matrices or microreactors, thus opening new fields for applications.
提出了两种互补的策略,用于在氧化铝膜的纳米孔内锚固分子
钯络合物,
钴或
铂簇或
金胶体。第一个步骤是
金属配合物携带的烷氧基甲
硅烷基官能团与覆盖膜孔表面的羟基缩合的一步。因此,使用衍生自(Ph2P)2NH(2)的短咬合烷氧基甲
硅烷基官能化的二
膦配体(Ph2P)2N(
CH2)3Si(OMe)3(1)和(Ph2P)2N( )4SiMe2(OMe)](2) dppa)(dppa双(
二苯基膦基)胺),
钯络合物[Pd(dmba)(kappa2-P,P-(Ph2P)2N( )3Si(OMe)3)] Cl(3)和[Pd(dmba) [κ2 -P,P-(Ph 2 P)2 N(CH 2)4 SiMe 2(OMe)] Cl(4)(dmba-H =二甲基
苄胺)。分别拴在孔壁上。经过控制的热处理。形成了受限且高度分散的
钯纳米粒子,并通过透射电子显微镜(
TEM)对其进行了表征。由于溶解度太有限,因此无法应用于
钴簇[