121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-453
Subject Development of the halogenated perylene based covalent organic frameworks (COFs) via acid-catalyzed trimerization reaction
Authors Ho Kyung Jang, Hong Mo KIM, Jae Pil Kim*
Material science and engineering, Seoul National University, Korea
Abstract Covalent organic framework (COF) is the one of emerging materials constructed from molecular building blocks including reactive organic functional groups. Here, we present the synthesis and characterization of the halogenated perylene based covalent organic frameworks (X-PDA-COFs, X=Cl, Br) and evaluate properties. Strong Brønsted acids are known to catalyze the trimerization of nitriles. A series of X-PDA-COFs were synthesized by using perylene precursors with nitrile and trifluoromethanesulfonic acid (TFMSA) as the catalyst at a moderate temperature under microwave-assisted conditions. This synthetic route allows not only the avoidance of undesired carbonization caused by traditional synthesis, but also easier route to construct strong and stable triazine-based polyimide networks than polyimidization method using triaminophenyltriazine (TAPT). The properties of products were investigated by powder x-ray diffraction (PXRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The Fourier transform infrared (FT-IR) spectra of materials indicated the formation of expected triazine group and the disappearing of nitriles at precursor.
E-mail hokung1215@snu.ac.kr