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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Light-induced Synthesis and Patterning of Covalent Organic Frameworks (COFs) with Unique Morphology

2015년 9월 3일 10시 50분 03초
INOR.P-131 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 15일 (목요일) 11:00~12:30
저자 및
김소영, 최희철*
포항공과대학교(POSTECH) 화학과, 기초과학연구원 CALDES, Korea
Covalent organic frameworks (COFs) are crystalline organic building block, which are linked by covalent bond between light elements. Since the first report on COFs in 2005 they have been widely studied as potential next-generation materials for gas storage and chemical catalysts because of their high thermal stability and stable porosity. In addition, they were further expected as superior two-dimensional nanomaterials which shows remarkable charge transfer and separation properties across π-conjugated layers. In spite of these advantages of COFs, however, the current solvothermal synthesis procedure has limitations such as long synthesis time (2~7 days) and high reaction temperature (90~120 ºC). Herein, we have successfully synthesized COF-5 by using light irradiation. Light-induced method significantly reduces reaction time down to a few hours at room temperature, which is dramatically milder condition than that of conventional solvothermal method (3 days, 90 ºC). Moreover, their homogenous sea-urchin-type morphology increases the surface area and the CO2 adsorption/desorption ability, which are, to the best of our knowledge, one of the highest among previously reported COF-5. Also, as an application perspective, we have succeeded in patterning the COF-5 into various geometry on a SiO2 substrate at the desired positions, exploiting the unique advantages of light as the energy source.