Novel benzylether type aldehyde and acetal terminated dendrons were synthesized and attached to a silica gel support; a linear spacer was also introduced as a control material. The supported dendritic compounds were mainly characterized by solid state 13C CPMAS NMR, elemental analysis and X-ray photoelectron spectroscopy (XPS) and the presence of free aldehydes was determined by the purpald test. Bovine serum albumin (BSA) protein was coupled to the dendronized support by imine bond formation, followed by irreversible reduction of the carbon–nitrogen double bond. A significant positive dendritic effect was observed on the antibody binding capacity of immobilised BSA as measured by fluorescence immunoassay (FIA).
合成了新型
苄醚型醛基和
缩醛端基树枝状大分子,并将其接到
硅胶载体上;同时引入线性间隔基作为对照物质。载树状化合物主要通过固态13C交叉极化魔角旋转核磁共振(C
PMAS NMR)、元素分析和X射线光电子能谱(XPS)进行表征,并通过purpald测试确定有无游离醛。
牛血清白蛋白(
BSA)蛋白通过
亚胺键与树枝状载体结合,随后碳-氮双键被不可逆还原。通过荧光免疫分析(FIA)测定,观察到固定化
BSA的
抗体结合能力显著的正向树枝状效应。