Light Driven Nano-Phase Separation in Polymer Brushes

聚合物刷中的光驱动纳米相分离

• 批准号: 518358552
• 负责人: Professorin Dr. Svetlana Santer
• 金额: --
• 依托单位: Institut für Physik und Astronomie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/518358552?language=en
• 关键词: Light; Driven; Nano; Phase; Separation

In this project we aim at establishing light triggered reversible nano-phase separation in mixed polymer brushes. During illumination with light of appropriate wave length de-mixing of two different types of polymer chains, each covalently attached to a solid surface, will result in reversible changes in polymer film properties such as topography, surface energy and local chemical composition. These types of polymer films we plan to utilize for developing distinct applications, such as the relocation of adsorbed nano-objects. The composition of the polymer surface as well as its response to the optical trigger will be adapted accordingly. The photo-sensitivity is introduced by loading one of the polymer blocks with azobenzene-containing molecules using either covalent or ionic attachment. The polymer surface itself is not pre-structured, any changes in morphology or surface energy will result from its photosensitive response to a tailored optical stimulus.

在这个项目中，我们的目标是建立光触发可逆的纳米相分离混合聚合物刷。在用适当波长的光照射期间，两种不同类型的聚合物链（各自共价连接到固体表面）的解混将导致聚合物膜性质（例如形貌、表面能和局部化学组成）的可逆变化。我们计划利用这些类型的聚合物薄膜来开发不同的应用，例如吸附纳米物体的重新定位。聚合物表面的组成以及其对光学触发的响应将相应地调整。光敏性通过使用共价或离子连接用含偶氮苯的分子加载聚合物嵌段之一来引入。聚合物表面本身不是预结构化的，形态或表面能的任何变化将由其对定制的光学刺激的光敏响应引起。