New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India.
School of Science and Technology, Nottingham Trent University , Nottingham NG11 8NS, United Kingdom.
ACS Appl Mater Interfaces. 2017 Jul 19;9(28):23843-23851. doi: 10.1021/acsami.7b06968. Epub 2017 Jul 5.
A [2 + 2] Schiff base type condensation between 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAP) and 1,3,6,8-tetrakis (4-formylphenyl) pyrene (TFFPy) under solvothermal condition yields a crystalline, quasi-two-dimensional covalent organic framework (SB-PORPy-COF). The porphyrin and pyrene units are alternatively occupied in the vertex of 3D triclinic crystal having permanent microporosity with moderately high surface area (∼869 m g) and promising chemical stability. The AA stacking of the monolayers give a pyrene bridged conducting channel. SB-PORPy-COF has been exploited for metal free hydrogen production to understand the electrochemical behavior using the imine based docking site in acidic media. SB-PORPy-COF has shown the onset potential of 50 mV and the Tafel slope of 116 mV dec. We expect that the addendum of the imine based COF would not only enrich the structural variety but also help to understand the electrochemical behavior of these class of materials.
在溶剂热条件下，5,10,15,20-四（4-氨基苯基）卟啉（TAP）和 1,3,6,8-四（4-醛基苯基）芘（TFFPy）之间的[2 + 2]席夫碱型缩合反应生成了一种结晶的、准二维共价有机骨架（SB-PORPy-COF）。卟啉和芘单元在具有适度高表面积（约 869 m²/g）和良好化学稳定性的永久微孔的 3D 三斜晶系晶体的顶点处交替占据。单层的 AA 堆积形成了芘桥接的导电通道。SB-PORPy-COF 已被用于无金属制氢，以在酸性介质中利用亚胺基的对接位点来理解其电化学行为。SB-PORPy-COF 表现出 50 mV 的起始电位和 116 mV dec 的塔菲尔斜率。我们预计，亚胺基 COF 的添加不仅会丰富结构多样性，还有助于理解这些类材料的电化学行为。
