DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Choi, Sung-Min | - |
dc.contributor.advisor | 최성민 | - |
dc.contributor.author | Kim, Tae-Hwan | - |
dc.contributor.author | 김태환 | - |
dc.date.accessioned | 2011-12-14T08:06:27Z | - |
dc.date.available | 2011-12-14T08:06:27Z | - |
dc.date.issued | 2009 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=327758&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/49017 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2009. 8., [ xx, 204 p. ] | - |
dc.description.abstract | Two kinds of one-dimensional (1D) nanoparticles, stable rod-like nanoparticles with highly controlled surface charge density (cROD) and non-covalently functionalized isolated single wall carbon nanotubes (p-SWNT) that were readily redispersible in water, have been developed. Using these 1D nanoparticles, various highly ordered superstructures of 1D nanoparticles by molecular self-assembling based on electrostatic interaction in amphiphilic molecular systems (two different cationic liposome systems) have been investigated. To our knowledge, this is the first demonstration of highly ordered self-assembly of 1D nanoparticles based on electrostatic interaction between 1D nanoparticles and amphiphilic molecules. The cRODs have been developed by free radical polymerization of a mixture of polymerizable cationic surfactant, cetyltrimethylammonium 4-vinylbenzoate (CTVB), and hydrotropic salt sodium 4-styrenesulfonate (NaSS) in aqueous solution. The surface charge of the cROD was controlled by varying the NaSS concentration during the polymerization process and the charge variation was interpreted in terms of the overcharging effect in colloidal systems. The small angle neutron scattering (SANS) measurements showed that the diameter of cROD is constant at 4 nm and the particle length ranges from 20 nm to 85 nm, depending on the NaSS concentration. The cRODs are longest when the NaSS concentration is 5 mol % which corresponds to the charge inversion or neutral point. The SANS and zeta potential measurements showed that the Coulomb interactions between the particles are strongly dependent on the NaSS concentration and the zeta potential of the cRODs changes from positive to negative (+ 12.8 mV ~ - 44.2 mV) as the concentration of NaSS increases from 0 mol % to 40 mol %. As the NaSS concentration is further increased, the zeta potential is saturated at approximately - 50 mV. The p-SWNTs have been developed by 1) dispersing single wall carbon nanotubes (SWNTs... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Self-Assembly | - |
dc.subject | one-dimensional nanoparticle | - |
dc.subject | Amphiphilic molecules | - |
dc.subject | Carbon Nanotubes | - |
dc.subject | Electrostatic Interaction | - |
dc.subject | 자기조립 | - |
dc.subject | 일차원 나노입자 | - |
dc.subject | 양친성 분자 | - |
dc.subject | 탄소나노튜브 | - |
dc.subject | 정전기적 상호작용 | - |
dc.title | Highly ordered self-assembly of one-dimensional nanoparticles in amphiphilic molecular systems | - |
dc.title.alternative | 일차원 나노입자가 양친성 분자시스템에서 형성하는 질서있는 자기조립 구조체 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 327758/325007 | - |
dc.description.department | 한국과학기술원 : 원자력및양자공학과, | - |
dc.identifier.uid | 020037169 | - |
dc.contributor.localauthor | Kim, Tae-Hwan | - |
dc.contributor.localauthor | 김태환 | - |
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