阳离子-π被认为是一种新型的分子间相互作用，广泛存在于生物体系。近年来逐渐被用于构建高分子材料超分子体系，在高分子材料高性能化领域起到越来越重要的作用。因此，深入研究高分子体系中阳离子-π相互作用的动态行为和基本物理规律具有重要意义。本项目旨在从多尺度层面构建零维、一维、二维和三维阳离子载体，考察相关因素对阳离子载体电荷分布和形貌的影响规律。采用理论与实验相结合的方法，研究不同阳离子载体与高分子链之间阳离子-π相互作用机制，阐明阳离子-π交联网络结构与高分子材料物理性能之间的构效关系，揭示外力作用下阳离子-π相互作用的解除/重构历程与高分子链滑移行为，探明阳离子-π交联网络在不同时间尺度下的粘弹特性。本项目研究结果将为新型高强韧高分子材料开发和高分子材料的高性能化提供理论基础和科学依据。

Cation-π is considered to be a novel intermolecular interaction that is widely existed in biological systems. In recent years, it has been gradually exploited to construct supramolecular systems in polymer materials, and has played an increasingly important role in the field of high performance of polymer materials. Therefore, it is of great significance to deeply study the dynamic behavior and fundamental physics laws of cation-π interaction in polymer systems. This project aims at constructing zero-dimensional, one-dimensional, two-dimensional and three-dimensional cationic carriers in multi-scale aspects, and investigate the influence of relevant factors on the charge distribution and morphology of cationic carriers. Theory and experiments were combined to study the mechanism of cation-π interaction between different cationic carriers and polymer chains, the structure-activity relationship between the structure of cation-π crosslinked network and the physical properties of polymer materials was indicated, the removal/reconstruction process of cation-π interaction and polymer chain sliding behavior in the presence of external force were revealed, and the viscoelastic properties of cation-π crosslinked networks at different time scales were also evaluated. The research results of this project will provide theoretical and scientific basis for the development of new high-strength and toughness polymer materials and high-performance polymer materials.