通过非经典活性位点调控芘基MOF对CO2选择性吸附及荧光传感的研究

项目名称： 通过非经典活性位点调控芘基MOF对CO2选择性吸附及荧光传感的研究

项目编号： No.21471110

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 任世斌

作者单位： 台州学院

项目金额： 80万元

中文摘要： 实现对CO2的高效捕集与快速检测，对现行倡导的绿色环保与低碳生活具有重 要的意义。本项目拟通过含非经典活性位点的吡啶配体、芘基羧酸配体与Zn2+和Cd2+组装 成系列芘基金属有机骨架材料，使发光性质与多孔性质有机结合, 以实现该材料对CO2气体 捕集和荧光识别。一是引入炔基增加共轭程度来增强其发光性能，另一个是改变含非典型活 性中心的啶桥联配体来提高CO2气体的选择性吸附。通过比较CO2、N2及H2与主体骨架之 间的吸附量及其吸附焓，利用理论计算的方法研究不同非活性位点与CO2的弱相互作用，探 索该骨架材料与CO2气体的吸附机理，优化骨架材料对CO2选择性吸附的条件；同时，研究 这些不同弱相互作用对主体骨架的荧光响应及CO2选择性吸附与荧光响应之间的内在联系， 这将为探索对CO2捕集及荧光传感的新型材料提供实验及理论依据。

中文关键词： 多孔金属有机骨架材料；芘基；选择性吸附；荧光传感；非典型活性中心

英文摘要： To achieve efficient capture and rapid detection of CO2, it is of great significance to advocate the green environmental protection and low carbon life now.This project aims at the construction of series of pyrene-based metal-organic frameworks by the self-assembly of pyridine ligands with non-classical active sites，pyrene-based carboxylic ligands，and transitional metal ions(Zn2+ and Cd2+) to integrate fluorescence with porosity as CO2 capture and fluorescent sensor. One is to enhance the luminescent properties by increasing conjugated chain length of parent pyrene, the other is to increase CO2 selective adsortion by changing non-classical active sites of pyridine ligands. The enthalpy of adsorption and adsorption Isotherms of CO2, N2 and H2 are compared, the weak interactions between non-classical active sites and CO2 by theoretical calculation are studied, gas adsorption mechanism is explored,the conditions of CO2 selective adsorption are optimized, the effect of these weak interactions on fluorescent sensor and the relationship between CO2 selective adsorption and fluorescent sensor are studied. This will provide experimental and theoretical basis as CO2 gas capture and fluorescent sensor for this kind of new material.

英文关键词： porous metal-organic framework;pyrene;selective adsorption;fluorescence sensor;non-classical active sites (NCAS)