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  • 05월 20일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제125회 대한화학회 학술발표회 및 총회 Electrically Conductive Metal-Organic Frameworks

2020년 2월 6일 16시 09분 42초
INOR1-4 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
화 11시 : 40분
Inorganic Chemistry - Emerging Researchers in Inorganic Chemistry
저자 및
Sarah Sunah Park
Department of Chemistry, Pohang University of Science and Technology, Korea
The development of conducting metal−organic frameworks (MOFs) provides an avenue for creating high surface area conductors with potential applications ranging from electrocatalysts and chemiresistive sensors to supercapacitors. Highly ordered and infinite charge/ion transport pathways could be realized in conducting MOF platforms to yield high carrier mobilities. However, it is difficult to engineer electrical conductivity in MOFs because these materials generally have flat bands. Indeed, of the many hundreds of microporous MOFs only a few exhibit intrinsic conductivity. Based on using intermolecular π-stacking interactions as topology defining factor of MOFs, four isostructural materials of general formula M2(TTFTB) (M = Mn, Co, Zn, and Cd; TTFTB4- = tetrathiafulvalene tetrabenzoate) were synthesized and their single crystal conductivities were studied. M2(TTFTB) exhibit a striking correlation between their single-crystal conductivities and the shortest S···S interaction defined by neighboring TTF cores, which inversely correlates with the ionic radius of the metal ions. This led to an improvement of nearly two orders of magnitude for Cd2(TTFTB) over the original analogous zinc compound. These results provide a systematic blueprint for designing new electrically conductive MOFs based on the through-space charge transport formalism.