酞菁基导电配位聚合物薄膜的制备和电学性能研究

The structural design and controllable synthesis of molecular-based conductive coordination polymers (CPs) films are of great significance for the development of functional conductive materials. The two key factors for extending CPs conductivity are the fabrication of the efficient carrier migration channel and increase of carrier concentration. In this project, we will pick phthalocyanine (PC) based molecules as the building blocks of CPs. At the gas/liquid interface, PC-CPs conductive films with an effecitive π-orbital overlapping will be optimized through the reasonable designs of ligands and metals. The synthetic method of conductive PC-CPs films with the efficient carrier migration channel were acquired. The conductivity of PC-CPs films can be further optimized through increasing the concentration of charge carrier. Combined with the theoretical calculation, the structural characteristics of conductive PC-CPs are to be deduced, and the practical PC-CPs conductive materials will be designed. The implementation of this project is expected to obtain the high-conductive PCs films, and to construct the structure-activity relationship of CPs conductive films. Based on this, the structural model of high-quality CPs films is to be established. It provides general guidance for the design and construction of practical molecular based conductive CPs.

开展分子基导电配位聚合物（CPs）的结构设计和薄膜的可控制备，对开发功能导电材料具有重要意义。实现CPs电子传导性能的前提是建立高通量的载流子通道，即构筑高效的载流子迁移通道和增加体系的载流子浓度。本项目以酞菁类分子（PC）为构筑CPs的结构单元。在Langmuir-Blodgett气/液界面上，通过合理设计有机配体和无机金属，合成有效dπ-pπ或pπ-pπ轨道重叠的PC-CPs，并掌握具备高效载流子迁移通道的PC-CPs薄膜的制备方法。进一步通过配体中心金属的掺杂和电子给体-受体的络合，增加PC-CPs框架的载流子浓度，优化薄膜的导电性能。结合理论计算结果，推测导电PC-CPs的结构特征，筛选出实用性PC-CPs的导电材料。本项目的执行，有望获得高电导率的PCs薄膜，揭示薄膜组分和结构与导电性能的关系，建立高质量CPs薄膜的结构模型，为实用性分子基导电CPs的设计与构筑提供一般性的指导。

配位聚合物因其丰富的结构可调性和化学多样性在多个化学应用领域受到广泛关注，然而较差的导电性能一直是阻碍配位聚合物在储能、发光、催化、传感和电子器件上应用的难点。近年来导电配位聚合物的研究开始迅速发展，二维导电配位聚合物的设计与合成已经取得了显著进展。在本基金项目的支持下，我们利用配位化学制备功能二维材料，研究其半导体导电、发光等性能，并优化提高基于材料所构建的气湿敏器件在室温下的灵敏度和选择性。.通过表面配位反应，设计并构建了不同配位结构的气体敏感材料，发现不同活性中心的不同器件对CO和NH3等气体分子的传感选择性发生反转，这一结果为通过优化表面配位结构，来实现气体分子的选择性检测提供研究思路。.在项目的支持下，发表14篇学术论文，申请发明专利2件，在研期间申获福建省自然科学基金-青年创新项目1项，协助合作导师培养研究生3名。