Functional properties as amphiphiles of novel nanomolecular material, dendrimer

新型纳米分子材料树枝状聚合物作为两亲物的功能特性

• 批准号: 11650928
• 负责人: IMAE Toyoko
• 金额: $ 2.3万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650928/
• 关键词: poly (amido amine) dendrimer; amphiphilic dendrimer; atamic force minrescopy; surface plassman usoname senses; surface *; menclayer; solf-asserbled membrane; nanomolecular material; ポリアミドアミンデンドリマー; 接触角; 赤外吸収分光法; 吸着膜; 二分子膜

Dendrimers, which consist of a core, repeating units, and functional terminals, are expected as materials with complex functionalities. The novel functionality also generates from the organization of dendrimers. In the present work, amphiphilic dendrimers with hydrophobic (n-hexyl) terminals and hydrophilic (hydroxyl, glycoside, or amine) terminals were synthesized, and the molecular assemblies at the solid-liquid (water) interface were examined. A dendrimer with n-hexyl/amine terminals displayed slightly less ability of assembly formation than a dendrimer with n-hexyl/hydroxyl terminals, but the ability was superior to that of a dendrimer with n-hexyl/glycoside terminals.Self-assembled monolayer is one of organized molecular assemblies. Since we have found that carboxylic acid derivatives construct self-assembled monolayers as well as thiol derivatives, the monolayer preparation from a dendrimer with carboxylic acid terminals was examined. The dendrimer adsorbed more preferably on metal substrate than that with amine terminals. The excess adsorption depending on pH was observed, but the self-assembled monolayer does bot desorb from the substrate even after the rinse by water. It was confirmed that the monolayer formation proceeds owing to the interaction of carboxylic acid with metal substrate.

树枝状聚合物是由核、重复单元和功能末端组成的具有复杂功能的材料。新的功能性也产生自树枝状聚合物的组织。在本工作中，两亲性树枝状大分子与疏水（正己基）终端和亲水（羟基，糖苷，或胺）终端的合成，并在固-液（水）界面的分子组装进行了检查。末端为正己基/胺的树枝状大分子的组装能力稍弱于末端为正己基/羟基的树枝状大分子，但其组装能力上级优于末端为正己基/糖苷的树枝状大分子。由于我们已经发现，羧酸衍生物构建自组装单分子膜以及硫醇衍生物，单层制备与羧酸终端的树枝状聚合物进行了检查。树枝状大分子在金属基底上的吸附比胺端基的树枝状大分子更好。观察到依赖于pH的过量吸附，但即使用水冲洗后，自组装单层也不会从基底上脱附。结果表明，单分子膜的形成是由于羧酸与金属基底的相互作用而进行的。

项目成果

青井啓悟 他5名: "Synthesis and Assembly of Amphiphilic Tadpole-shaped Block Copolymers Based on Poly(amido amine)Dendrimer"Polymer J.. 31. 1071-1078 (1999)

Keigo Aoi 等 5 人：“基于聚(酰胺基胺)Dendrimer 的两亲性蝌蚪形嵌段共聚物的合成和组装”Polymer J.. 31. 1071-1078 (1999)

今栄東洋子 他5名: "Formation of organized adsorption layers by amphiphilic dendrimers"Colloid and Surfaces, A-Phys.Eng.Asp.. 175. 225-234 (2000)

Toyoko Imaei 等 5 人：“两性树枝状聚合物形成有组织的吸附层”胶体和表面，A-Phys.Eng.Asp.. 175. 225-234 (2000)

船山勝矢 他5名: "Conformation of Sugar Ball in aqueous Solutions"Activity Report on Neutron Scattering Research. 7. 261 (2000)

Katsuya Funayama 等 5 人：“水溶液中糖球的构象”中子散射研究活动报告 7. 261 (2000)。

今栄東洋子 他5名: "Small-angle Neutron Scattering and Surface Force Investigations of Poly(amido Amine)Dendrimer with Hydroxyl End Group"Langmuir. 15. 4076-4084 (1999)

Toyoko Imaei 等 5 人：“具有羟基末端基团的聚（酰胺基胺）树枝状聚合物的小角中子散射和表面力研究”Langmuir。 15. 4076-4084 (1999)

今栄東洋子: "デンドリマーの構造と機能性"高分子論文集. 57. 810-824 (2000)

Toyoko Imaei：“树枝状聚合物的结构和功能”Polymer Transactions 57. 810-824 (2000)。