A Facile Synthesis Route for Covalent Triazine Frameworks(CTFs)

• 作 者: SophieKücken;ArneThomas;
• 机 构: Department of Chemistry,TU Berlin,Germany,10623 Berlin
• 出 处: The 6th International Conference on Nanoscience and Technolo
• 发表日期: 2015年期

　　Covalent triazine frameworks(CTFs)[1] are an emerging class of organic polymeric networks.The combination of interesting features such as high porosity,crystallinity,high chemical and thermal stability and high nitrogen content makes these materials interesting for various applications.Numerous studies in recent years have focused on their use in heterogeneous catalysis,sensing and energy applications [2].Furthermore a wide range of different crystalline and amorphous covalent triazine-based frameworks have been prepared starting from various nitrile monomers,which also enable the integration of further functionalities [3].The synthesis of CTF materials by the reversible polytrimerisation of aromatic polynitriles requires harsh reaction conditions.During the ionothermal synthesis in sealed ampoules at 400 °C,molten zinc chloride acts as a solvent and also catalyses the trimerisation reaction of cheap aromatic nitriles,e.g.1,4-dicyanobenzene(DCB)to CTF-1.However,the ionothermal synthesis involves drawbacks such as limited batch size and long reaction times.Herein we present a novel and facile synthetic route towards crystalline CTF materials,which enables the reversible trimerisation reaction of preformed amorphous non-porous triazine networks in scalable reaction vessels and avoids the usage of evacuated and sealed ampoules.The presented preparation method provides promising perspectives in terms of practical application for the large scale synthesis of CTF materials.Furthermore,the potential of various CTF materials for different energy applications will be presented.