结晶性嵌段共聚物活性自组装用于构筑功能化表面的研究

项目名称： 结晶性嵌段共聚物活性自组装用于构筑功能化表面的研究

项目编号： No.21674062

项目类型： 面上项目

立项/批准年度： 2017

项目学科： 数理科学和化学

项目作者： 邱惠斌

作者单位： 上海科技大学

项目金额： 32万元

中文摘要： 表面功能化在工业界和日常生活中都具有十分重要的意义，除传统方法以外，各类先进纳米技术也被广泛地应用于材料表面的修饰，但是像生物体一样高效、灵巧地构筑各种微纳米表面功能结构仍是一项富有挑战的课题。本项目设计合成一系列结晶－无定形嵌段共聚物，将其所形成的柱状胶束种子牢固地负载到各种材料表面上，通过结晶诱导的活性自组装，使后续加入的嵌段共聚物在种子诱导下组装形成柱状胶束刷，从而直接在材料表面原位构筑特定的微纳米结构。根据不同需求，柱状胶束刷的化学组成、分布密度、尺寸与嵌段结构、聚集形态、三维拓扑结构等都可以灵活调节，并进行丰富多样的后修饰与复合。通过该项目的研究，力争使聚合物活性自组装成为一种可控、灵活、多元化的表面功能化方法，并进一步发挥其在功能材料、微纳米器件、生物医药等领域的应用潜力。

中文关键词： 嵌段共聚物；结晶；活性自组装；柱状胶束刷；表面功能化

英文摘要： Surface functionalization is of remarkable significance in industry and routine life. Besides to many traditional methods, a diverse array of modern nanotechnologies has now been widely applied to modify material surfaces. Nevertheless, it is still challenging to construct various functional surface micro/nanostructures in a highly efficient and flexible way similar to that adopted by living beings. In this project, we develop an in situ living method to directly fabricate unique micro/nanostructures using crystallization-driven living self-assembly of crystalline-coil block copolymers, where cylindrical micelle seeds are firstly immobilized on material surface and subsequently initiate the living self-assembly of further added block copolymer unimers to form cylindrical micellar brushes. According to various demands, the chemical composition, distribution and density, length and segmented structures, self-assembly behavior, and 3D topological structures of these micellar brushes can be well tailored. Moreover, the micellar brushes can be further functionalized by post modification and complexation. This provides a controllable, tunable and multiplex approach for surface functionalization, which appears to be highly promising for future applications in the fields of functional materials, micro/nano-devices, biomedicines, etc.

英文关键词： Block Copolymer;Crystallization;Living Self-Assembly;Cylindrical Micellar Brush;Surface Functionalization