形状记忆高分子智能调控纳米阵列结构及其等离激元与荧光增强效应

Some micro- and nano- structures of metals have special properties of the surface plasmon polaritons (SPPs), and show SPPs resonances and fluorescence enhancement when composed with conjugate polymers. A series of gold and silver nanowire or nanoparticle arrays with SPPs properties will be fabricated by using block copolymer templates in this proposed program. And bifunctional nanostructure arrays, which are based on gold or silver nanowires, nanoparticles and other nanowires, nanoparticles with special optical, electronic or quantum dot properties, will be also prepared. Furthermore, nanostructure arrays on the soft substrate of shape memory polymers (SMPs)will be fabricated by choosing proper SMPs, spin-coating and transferring method. The intelligent control of the structural parameters can be achieved by the triggered response of SMPs. The general intelligent control method will be also studied. The relationship between the structural parameters and SPPs control and fluorescence enhancement will be studied during the intelligent deformation of SMPs. The SPPs resonance mechanism of the composite structures and their influence on the fluorescence enhancement of conjugated polymer will be discussed. And the intelligent control of SPPs and optical spectra enhancement of metal nanoarrays will be realized. This program can offer new ideas to the study of nanodevice materials with high opto-electrical properites, and have great potential applications in flexible photoelectric devices, single molecule detection,etc.

某些金属微纳结构具有典型的表面等离激元（SPPs），与共轭聚合物复合表现出SPPs共振、荧光增强等效应。本项目拟通过嵌段共聚物模板法等技术，设计制备一系列具有SPPs的金、银等纳米线、纳米粒子阵列，以及包含金、银等纳米结构和具备光、电、量子点等特性纳米结构的双纳米阵列；优选微纳尺度下具有刺激响应性的形状记忆高分子（SMPs），通过旋涂、转移、剥离等技术，构建以SMPs为柔性衬底的纳米阵列-SMPs复合结构；通过SMPs的刺激响应性智能形变，实现纳米单元间距等参数的可逆精确调控，建立纳米阵列结构的智能调控方法；构建共轭聚合物/纳米阵列-SMPs复合结构，研究纳米单元间距等结构参数与复合结构SPPs及荧光增强的构效关系，阐明SPPs共振机制及其对共轭聚合物荧光增强机理，实现复合结构SPPs及其荧光增强的精确调控。项目可为新型光电材料研究提供新思路，对于柔性光电器件、单分子检测等具有重要意义。

在近场光作用下，某些金属微纳米结构在金属-介质界面处产生表面等离激元（SPPs），其形成SPPs共振效应在聚合物荧光增强、表面增强拉曼光谱等领域得到广泛的关注。本项目围绕金属纳米阵列结构参数的智能调控及其与SPPs和光谱增强构效关系的研究展开。通过嵌段共聚物自组装和吸附还原，制备了一系列具有SPPs的金属纳米阵列；以形状记忆聚氨酯（SMPU）为柔性基底材料，通过超声，辅助构建金属纳米阵列-SMPU复合结构；利用SMPU的智能柔性形变，实现了纳米单元间距的可逆调变；通过消光光谱、偏振拉曼光谱等技术，研究了纳米单元间距与SPPs及光谱增强效应的构效关系，初步建立了金属纳米阵列结构参数及其SPPs的智能调控方法，实现了复合结构光谱增强效应的调控。本项目的研究不仅扩大了形状记忆高分子的应用范围，同时也为基于SPPs的柔性光电材料及器件的设计和制备提供理论指导和技术支持。