| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Shape-Switchable Block Copolymer Particles Exhibiting Light-Responsive Surfactants |
| 초록 |
Particles changing their shape in response to external light irradiation may serve as promising smart materials. Herein, we report polystyrene-block-poly(2-vinylpyridine) block copolymer (BCP) particles exhibiting shape change induced by light irradiation. Key of forming light-dependent BCP particles is to design surfactants having light-active groups, which can tune interfacial activity response to light. With irradiating light, a sphere with onion-like inner morphology changes to prolate or oblate ellipsoids with axially stacked nanostructures. In addition, wavelength-selective shape transformation of BCP particles is achieved by a mixture of two light-active surfactants. Moreover, we demonstrate the color- and shape-changing particles in response to the light by using of light-emitting, photo-responsive surfactants. Finally, we integrate shape-switchable BCP particles into a hydrogel film to demonstrate the modulation of the particle shape in sub-micrometer resolution. |
| 저자 |
김진우1, 이준혁2, 구강희3, 윤홍석1, 이영준1, Kin Liao4, 김범준1
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| 소속 |
1KAIST, 2한국생산기술연구워, 3MIT, 4Khalifa Univ. |
| 키워드 |
자극반응성; 빛 반응성; 고분자 입자; 입자 모양 변화; 광학적 성질 변화
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| E-Mail |
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