基于长波长吸收全氟二芳烯衍生物/近红外荧光染料的新型智能超分子组装体的构筑及其刺激响应性能研究

项目名称： 基于长波长吸收全氟二芳烯衍生物/近红外荧光染料的新型智能超分子组装体的构筑及其刺激响应性能研究

项目编号： No.21502195

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 程红波

作者单位： 中国科学院高能物理研究所

项目金额： 21万元

中文摘要： 二芳烯类光致变色分子为构筑板块构建的光控荧光超分子组装体，具有独特的环境刺激响应性和良好的智能可控性，在信息存储、智能材料等领域有巨大的应用前景。然而，二芳烯类光控荧光超分子组装体目前依然存在异构体与近红外荧光染料匹配度不高、能量传递效率低以及组装体不稳定等问题。本项目针对上述问题，在设计合成新型的长波长吸收的全氟二芳烯基础上，将三聚氰胺基团、冠醚环分别引入所合成的二芳烯骨架中。同时，选取稳定性好、荧光量子产率高的近红外染料，分别修饰上能与三聚氰胺基团、冠醚环发生强络合作用的二酰亚胺基团和二级胺正离子，从而通过三重氢键、主客体相互作用来构筑高匹配、高效率、稳定的光控近红外荧光超分子智能组装体。本项目所构筑的上述超分子组装体能够结合二者的优势，其不仅具有灵敏的响应性、耐久的抗疲劳性而且拥有荧光信号强、背景干扰小的优点，在智能传感器、光学信息存储及高分辨荧光显微镜等方面具有巨大的应用前景。

中文关键词： 二芳烯衍生物；光致变色；超分子组装体；智能材料；刺激响应

英文摘要： The use of organic photochromic Diarylethene derivatives (DAEs) as the building blocks for forming the self-assembled structures has potential applications in information storage and intelligent materials for their unique stimulus-response and controllable intelligent. However, it remains a challenge for most DAEs-based photo-control fluorescent supramolecular assemblies to construct high matching molecular switches with near-infrared fluorescent dyes accompanied by high energy transfer efficiency and more stable assembly bodies. In this project, a series of long wavelength absorption DAEs with melamine group or crown ring will be designed and synthesized to overcome the above problems. And then the stable near-infrared fluorescent dyes with high fluorescence quantum efficiency will be modified by diimide group or the secondary amine cations. By assembling the above designed long wavelength absorption DAEs derivatives and near-infrared fluorescent dyes, the stable assembly bodies with high match property will be achieved through strong ternary hydrogen bonding or host-guest interaction between melamine and diimide or crown and the secondary amine cations respectively. The supramolecular assemblies based on diarylethenes derivatives/near-infrared fluorescent dyes constructed in this project would combine the advantages of diarylethenes derivatives and near-infrared fluorescent dyes, so they have potential applications in smart sensors, optical information storage and high-resolution fluorescence microscope due to their sensitive responsiveness, durable fatigue resistance, low excitation energy, strong fluorescent signal and anti-disturbance.

英文关键词： diarylethenes derivatives;photochromic;supramolecular assemblies;intelligent materials;stimulus response