- 期刊
水溶性樹枝狀高分子及其修飾奈米材料上的功能
Toward Investigating the Water-soluble Hyperbranched Polymer and their Functionality as Nanoscale Modifier
摘要
我們有興趣的是合成不同分子結構之水溶性樹枝狀高分子，分子設計則採用多氫鍵結構的概念，並利用樹枝狀高分子開發多功能奈米混成材料，文中將介紹將其應用在修飾二維層狀奈米材料-石墨烯與天然黏土與零維球狀的磁性氧化鐵，由界面化學切入探討有機/無機分子層次間的作用力，目前我們成功製備藍色螢光樹枝狀高分子，具備水溶特性與非共軛分子結構，其螢光量子效率 (QYs)可達23% (Em: 395 nm)，合成出一系列不同分子量的脂肪族樹枝狀高分子，此發藍光之不同分子量的水溶性樹枝狀高分子可視為多官能基的奈米容器與追蹤載體，另外將磁性氧化鐵粒子結合樹枝狀高分子，調整磁性粒子、樹枝狀高分子的比例來控制材料的性質，並修飾磁性粒子作為酵素固定化載體。
並列摘要
We intend to introduce fluorescent hyperbranched poly(amido acid)s (HBPAAs) featuring wholly aliphatic backbones, multiple terminal CO_2H units, and many internal tertiary amino and amido moieties. Visible blue photoluminescence self-emissions will be generated from the nonconjugated HBPAAs in aqueous solution; that is, bright blue fluorescence behavior, with emission peaks at 395 nm and fluorescence QYs of up to 23%, appeared when the branching tertiary amino moieties were embedded in a self-polymerized globular confinement. These water-soluble HBPAAs have application in 2D layered material-graphene and natural clay and 0D magnetic nanocarrier. Self-condensation of this AB_2 building block to construct water-soluble globular architectures with desired fluorescence properties appears to be a facile approach toward dendritic macromolecules with labeling-delivery applications. Next, embedding iron oxide into HBPAAs to evaluate the potential use as molecular-level carriers were obtained. Covalent immobilization of a natural enzyme upon Fe_2O_3/HBPAAs nanocarriers were achieved through amide linkage.