Two-Dimensional Polymers

小行星9312601 在过去的六十年里，高分子科学一直专注于含有经典线性链高分子的材料的合成和物理性质。 在这个研究项目中，我们从一维线性聚合物的概念出发，探索使用本体化学反应将聚合物分子转化为二维物体。 感兴趣的二维聚合物被成形为具有纳米尺度的厚度和大一到三个数量级的可变表面积的片材。 基本的方法是合成能够形成“反应性”液晶的自排序分子，根据微相分离的热力学原理在内部组织。 该计划的研究是作为一项协调一致的努力组织的，其中基本的合成工作与这些新材料的物理特性的计算机建模和实验密切相关。 该计划的科学重要性包括了解分子自组装和具有特定形状的分子物体的物理行为。 在技术背景下，二维大分子可以导致自发地产生分子限定的表面或经历不寻常的相变的材料，因为它们的组成分子对象可逆地改变形状。 这些材料将在诸如粘附、传感器和膜技术以及使用材料控制化学品向环境或人体释放等领域提供迄今未知的机会。 ***

9312601 Stupp Over the past sixty years polymer science has focused on synthesis and physical properties of materials containing the classical linear chain macromolecules. In this research program we depart from the concept of one-dimensional linear polymers and explore the transformation of polymer molecules to two-dimensional objects using bulk chemical reactions. The two-dimensional polymers of interest are shaped as sheets with thicknesses in the scale of nanometers and variable surface areas one to three orders of magnitude greater. The basic approach is to synthesize self ordering molecules that can form "reactive" liquid crystals, organized internally according to the thermodynamic principles of microphase separation. Research in the program is organized as a concerted effort in which the essential synthetic work is closely coupled to both computer modeling and experiments on the physical properties of these novel materials. %%% The scientific importance of the program includes learning about molecular self assembly and the physical behavior of molecular objects having specific shape. In a technological context, two- dimensional macromolecules could lead to materials that generate spontaneously a molecularly defined surface or that undergo unusual phase transitions as their constituent molecular objects change shape reversibly. These materials would open opportunities so far unknown in areas such as adhesion, sensor and membrane technologies, as well as the use of materials for the controlled release of chemicals to the environment or the human body. ***