| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Shape-switchable block copolymer particles driven by photo-isomerizable surfactants |
| 초록 |
We developed light-responsive block copolymer (BCP) particles, whose shape can be reversibly controlled. The surfactants having light-active groups were designed, which can reversibly modulate the interfacial activity to form shape changeable PS-b-P4VP microparticles. The designed surfactant, Spiropyran-DTAB can tune its amphiphilicity can be tuned by wavelength-controlled light irradiation. Sphere particles with onion-like inner morphology and ellipsoidal particles with axially stacked lamellar domain structures are formed by exposing UV and visible light, respectively. Moreover, we quantitatively revealed that the particle shape transition was induced by photoisomerization of Spiropyran-DTAB from pendant drop interfacial tension analysis. Finally, the reversible, light-responsive particle shape transformation was successfully demonstrated 10 times by chloroform vapor annealing.
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| 저자 |
권승호1, 김진우1, 윤홍석2, 구강희3, 이영준1, 이준혁4, 김범준1
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| 소속 |
1KAIST, 2한양대, 3충남대, 4한국생산기술(연) |
| 키워드 |
spiropyran; photochromic surfactants; block copolymer particles; photoisomerization; light-responsive polymer particles
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| E-Mail |
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