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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Light-induced electrical switch via photo-responsive nanocomposite film

2018년 8월 22일 13시 30분 03초
MAT.O-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 09시 : 00분
Material Chemisty - Oral Presentation of Young Material Chemists
저자 및
Wonsik Lee, Dongjun Kim1, Geonho Kim, Ikyon Kim2,*, Jiwon Kim*
School of Integrated Technology, Yonsei University, Korea
1School of integrated technology, Yonsei University, Korea
2Department of Pharmacy, Yonsei University, Korea

Photo-responsive nanomaterials have attracted a lot of attention since they allow a remote control with a non-invasive stimulus—light. Owing to this property, it has been applied to next-generation electrical devices, which are desired to be flexible and transparent for a wider range of applications. Herein, we developed a flexible, transparent and conductive film which can change its shape via light of specific wavelength to control the electrical conductivity between electrodes. The film is composed of three layers: azobenzene incorporated poly(dimethylsiloxane), AzoPDMS; silk fibroin; and silver nanowires, AgNWs. When azobenzene within the polymer changes its molecular arrangement upon irradiation, the difference in volume changes of AzoPDMS and silk fibroin layer results in the film to bend. Since a silk fibroin layer folds inward upon irradiation, AgNWs are coated onto the silk fibroin layer to be selectively in contact with the electrodes. This photo-responsive nanocomposite film is flexible, transparent and conductive which can be connected to the circuit on demand via light acting as an electrical switch. We believe it can be combined with various transparent electronic devices to further expand its applications.