DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kim, Bumjoon J. | - |
dc.contributor.advisor | 김범준 | - |
dc.contributor.author | Kwon, Seung Ho | - |
dc.date.accessioned | 2023-06-23T19:31:24Z | - |
dc.date.available | 2023-06-23T19:31:24Z | - |
dc.date.issued | 2022 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=997296&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/308828 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2022.2,[v, 53 p. :] | - |
dc.description.abstract | Dynamic particles with switchable shapes in response to light have attracted great interest to develop programmable smart materials with superior spatial and temporal resolution. Herein, a facile strategy for light-responsive, shape-changing block copolymer (BCP) particles is developed. The key strategy is to exploit azobenzene-grafted Au nanoparticles (Au@Azo NPs) as active surfactants, showing light-dependent wetting behavior on each block of polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) BCP particles through photoisomerization of Azo ligands between trans- and cis-isomer under visible and UV light, respectively. Thus, visible light induces the formation of onion-like BCP particles with PS-outermost layer, while UV-driven shape-shifting from the spheres to ellipsoids with both PS and P2VP exposed on the surface. The reversible shape evolution mechanism between the spheres and ellipsoids is further clarified using a cryogenic electron microscope. Furthermore, light-dependent fluorescence and shape of the hybrid particles are successfully demonstrated, enabling the visualization of particle shape into an optical signal. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.title | Development of light-responsive, reversible shape-changing block copolymer particles using Au nanoparticles | - |
dc.title.alternative | 금 나노 입자를 이용한 빛 반응성 및 가역적 모양 변화를 가지는 블록공중합체 입자 개발에 대한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | 권승호 | - |
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