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-448
Subject Comparative study of the synthetic methods for the halogenated (X=Cl, Br) perylene based covalent organic frameworks(COFs)
Authors Hong Mo KIM, Ho Kyung Jang, Jae Pil Kim*
Material science and engineering, Seoul National University, Korea
Abstract Covalent organic frameworks (COFs) have been evolved as a new class of porous and crystalline materials. It is mainly synthesized by condensation reactions of diverse building units. However, interestingly, the materials properties of the COFs with identical build units and linkage can vary with the synthetic methods. Accordingly, in this study, the halogenated perylene based covalent organic frameworks (X-PDA-COFs, X=Cl, Br) were constructed with perylenes which were halogenated at the bay position and a triazine linkage via different synthetic methods including polyimidization and microwave-assisted trimerization. Furthermore, to compare the differences of each method, we scrutinized the materials properties of the products such as thermal stability, porosity, morphology, and crystallinity. As a result, all of the PDA-COF, Cl-PDA-COF, and Br-PDA-COF which were prepared by microwave-assisted trimerization showed even better thermal stability and crystallinity than COFs prepared by polyimidization due to the stable and strong linkage formation of trimerization.
E-mail hmkim0118@snu.ac.kr