| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
학생우수논문발표(석사과정) |
| 제목 |
Reversible Shape Transition of Block Copolymer Particles using Photo-Responsive Azobenzene-Coated Au Nanoparticles |
| 초록 |
Photo-responsive PS-b-P2VP/Au NP polymer nanocomposite system with controlled 3D nanostructures was reported in a reversible manner. The key strategy is to attach azobenzene-based ligand to the Au NP surface, whose polarity changes reversibly due to the photoisomerization of azobenzene according to specific light wavelength. Under the visible light, spherical shape BCP particles were generated with evenly distribution of Au NPs on the PS-outmost layer. Otherwise, ellipsoidal particles were observed under UV irradiation in which both PS and P2VP blocks were exposed to the surface and Au NPs located at the PS/P2VP interface. We noted that the azobenzene-coated Au NPs could be modulated the surface wetting behavior of BCP domains by light, inducing the shape transition of colloidal particles and selective localization of Au NPs. We expect the reversible photo-active hybrid systems can be applied in practical applications such as molecular sensor or photo-patterning. |
| 저자 |
권승호1, 쉬멍1, 김진우1, 김은지1, 이영준1, 윤홍석2, 김범준1
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| 소속 |
1KAIST, 2한양대 |
| 키워드 |
block copolymer; polymer nanocomposite; light-responsive; azobenzene; Au nanoparticle
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| E-Mail |
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