Synthesis and nanoscale electrochemistry of two-dimensional covalent organic frameworks (2D-COFs) of metal containing porphyrins

该项目将结合使用MOB组的纳米级表面分析和使用KBH组的电化学技术。这一合作为双方开发两项新技术提供了机会：电化学扫描隧道显微镜(EC-STM)和电化学石英晶体微天平(EC-QCM)。EC-STM将使卟啉2D-COF的电化学和分子分辨结构分析相结合。QCM允许测量&lt；1 ng cm-2的表面质量变化，并正在由MOB实施，作为他的EPSRC第一笔拨款的一部分，研究卟啉2D-COF的生长。将QCM与电化学测量相结合，将提供一种既可以探测卟啉2D-COFS的氧化还原行为，又可以探测不同分析物与卟啉组分的中心金属原子结合的技术。EC-STM和EC-QCM的结合使用将使我们能够从分子水平研究这些新的2D材料的电化学行为，直到在高比表面积多孔石墨烯衬底上延伸的薄膜，这些材料作为传感器或电催化剂具有巨大的潜力。

This project will combine nanoscale surface analysis used the MOB group, with electrochemical techniques used in the KBH group. This collaboration provides an opportunity to develop two techniques new to both groups: electrochemical STM (EC-STM) and electrochemical quartz crystal microbalance (EC-QCM). EC-STM will allow combined electrochemical and molecular resolution structural analysis of porphyrin 2D-COFs. QCM allows surface mass changes of < 1 ng cm-2 to be measured and is being implemented by MOB to study porphyrin 2D-COF growth as part of his EPSRC 1st grant. Combining QCM with electrochemical measurements would provide a technique that can probe both the redox behaviour of porphyrin 2D-COFs but also the binding of different analytes to the central metal atoms of the porphyrin components. The combined use of EC-STM and EC-QCM will allow us to investigate the electrochemical behaviour of these new 2D materials from the molecular level right up to extended thin films on high surface area porous graphene substrate, materials with immense potential as sensors or electro-catalysts.