本项目仿生自然界捕光色素蛋白质复合体，设计合成具有"核-壳"与"核-壳-冠"结构的单分子捕光柱状聚合物刷(LHCPB)。用"标准模块分别设计、聚合物刷统一合成"的精密聚合方法，使捕光天线分子位于侧链上，兼作能量传递给体(ED)，而能量传递受体分子(EA)则位于主链上。高密度接枝的侧链位阻使LHCPB主链呈伸直链构象，线形侧链也较为伸展。天线分子呈同心圆柱状排列于主链外围，类似自然界捕光蛋白复合体中色素的排列方式，协同捕光和向内汇聚能量。ED和EA间距可通过LHCPB侧链内层引入具有环境敏感单体单元实现精确控制，并具有刺激响应性。本项目从高分子合成化学源头出发，根据生物化学与物理化学基本科学理论，构造新型人工捕光系统，不仅用于捕光分子器件研究和光波调频分子设计，还对柱状聚合物刷的结构与性质研究、能量传递理论研究、传感器研究、乃至太阳能电池和有机发光二极管研究等相关领域发展都有推动作用。

This proposal focuses on designing and synthesizing light-harvesting cylindrical polymer brushes (LHCPBs) with single molecular "core-shell" or "core-shell-corona" structure mimicking natural light-harvesting pigment-protein complexes. "Standard building block" synthetic strategy is introduced to fix light-harvesting antenna molecules to side chains to serve as energy donors (EDs), while energy acceptors (EAs) are located in backbone. Due to the steric hindrance of high dense side chains, the backbone of LHCPB is in a stretched conformation with quite extending linear side chains. The antennae are arranged concentrically and cylindrically at the periphery of the backbone. The structure is similar to natural light-harvesting protein complexes, and all EDs in LHCPB generate a "energy cascade" to capture light and transfer energy inwardly. The distance of ED and EA can be precisely controlled by introducing stimuli-responsive units to the inner layer of side chains of LHCPB. The design of the novel biomimical light-harvesting system in this proposal not only benefits the studies of light-harvesting molecular devices and light frequency modulators, but also promotes the researches in the fundamental properties of cylindrical polymer brushes, resonance energy transfer theory, sensor development, solar cells, and organic light-emitting diodes.