물리colloquium

주제 : π-Conjugated Molecule-Silicon Quantum Dot Hybrid Polymers

발 표 요 약 :

The Si QDs capped with π conjugated molecules (1-octene, phenylacetylene, and 1, 4-diethynylbenzene) exhibit red-shift in ultraviolet-visible absorption and photoluminescence spectroscopy. π-conjugated molecule-Si QD hybrid polymer was synthesized by cross-coupling reaction. Ultraviolet–visible absorbance, photoluminescence and valence band spectra of the π-conjugated molecule-Si QD hybrid polymer show absorption band in the range 370-400 nm, emission at 500 nm, and valence band edge at binding energy of 4.1 eV which are shifted from those of 4-diethynylstyryl terminated Si QD, indicating strong electronic coupling between Si QDs. The electron transport and transfer properties of π-conjugated molecule bridged Si QD dimer were investigated using quantum mechanical and quantum chemical calculations.

- 연 사 : 정현담 교수 (화학과)

- 일 시 : 2017년 10월 12일(목요일) 오후 4시 30분

- 장 소 : 자연대 2호관 2층 교수회의실

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