Colloidal Assembly of Patchy Polymer Brush Particles utilizing efficient Ligation Strategies

利用有效的连接策略进行片状聚合物刷颗粒的胶体组装

• 批准号: 414749456
• 负责人: Dr. Thomas Gegenhuber
• 金额: --
• 依托单位: School of Chemistry
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/414749456?language=en
• 关键词: Colloidal; Assembly; Patchy; Polymer; Brush

In the proposed project, block-type molecular polymer brushes will be used as colloidal building blocks to build supramolecular structures via efficient ligations reactions in solution. In this novel approach, polymer assembly is achieved by a chemical reaction. The project will develop new concepts of particle assembly, which contrast commonly applied for self-assembly methods for the generation of micelles, vesicles, or other hierarchical two- or three-dimensional structures using amphiphilic block copolymers. In contrast to purely self-assembled systems, in the proposed project no physical but covalent bonds are exploited to obtain supramolecular assemblies. The formation of the superstructures will be similar to step-growth polymerisation but using polymer particles as monomers instead. Covalent bonds – in contrary to physical bonds – are less sensitive to environmental changes and – if carefully selected – can be switched on and off. In a first step, the molecular polymer brushes are synthesized via reversible deactivation radical polymerization and ring-opening polymerization to yield triblock copolymer brushes. By decorating the end-groups of the polymer brushes side chains accordingly, i.e. with complementary functionalities, a covalent polymer assembly can be triggered. With respect to current state of the art concepts in literature, the proposal offers great potential, since reversible chemical reactions benefit a precise modular assembly and dissolution of supramolecular structures.

在拟议的项目中，通过有效的溶液中有效的连字反应，将块型分子聚合物刷作为胶体构建块，以构建超分子结构。在这种新颖的方法中，聚合物组装是通过化学反应实现的。该项目将开发粒子组装的新概念，该概念通常用于使用两亲块共聚物的胶束，蔬菜或其他分层的两维结构来生成胶束，蔬菜或其他分层的两维结构。与纯粹的自组装系统相反，在拟议的项目中，没有任何物理键，但共价键可利用超分子组件。上层建筑的形成将类似于阶梯生长的聚合，但使用聚合物颗粒作为单体。与物理键相比，共价键对环境变化的敏感程度较小，并且（如果精心选择）可以打开和关闭。第一步，分子聚合物刷是通过可逆的失活自由基聚合和开环聚合合成的，以产生三嵌段共聚物刷。通过相应地装饰聚合物刷侧链的端组，即使用完整的功能，可以触发共价聚合物组件。关于文献中最新概念的现状，该提案具有巨大的潜力，因为可逆的化学反应使精确的模块化组装和超分子结构的溶解有益。