DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Chang, Yong-Keun | - |
dc.contributor.advisor | 장용근 | - |
dc.contributor.author | Yoo, Eun-Ji | - |
dc.contributor.author | 류은지 | - |
dc.date.accessioned | 2011-12-13T01:54:41Z | - |
dc.date.available | 2011-12-13T01:54:41Z | - |
dc.date.issued | 2005 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=249583&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/29877 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2005.8, [ vi, 42 p. ] | - |
dc.description.abstract | Gold nanoparticles with different sizes were prepared by adjusting the amount of sodium citrate added to a HAuCl4 solution as reducing agent. The surface of the gold particles were modified with various biomolecules with amine, carboxyl and/or thiol groups: amino acids (arginine, lysine, cysteine and glutathione); two oligopeptides with molecular weights of 953 and 1162 respectively; and proteins(bovine serum albumin (BSA) and human serum albumin (HSA)). The flocculation behavior of the modified gold nanoparticles was investigated by observing colorimetric changes and morphological changes with an UV-Visible spectrophotometer and a transmission electron microscope (TEM), respectively. Being capped with a small amino acid such as arginine, small gold nanoparticles flocculated more easily than large ones. On the contrary, large nanoparticles were observed to flocculate more easily when gold particles were capped with the proteins. The driving force for the flocculation of small biomolecules-capped gold particles was considered to be hydrogen bonding among the biomolecules, while the governing mechanism for the flocculation of protein-capped gold nanoparticles was considered to be van der Waals interaction among the gold particles | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | flocculation | - |
dc.subject | Gold nanoparticles | - |
dc.subject | biomolecules | - |
dc.subject | 생체분자 | - |
dc.subject | 응집현상 | - |
dc.subject | 금 나노입자 | - |
dc.title | Size-dependent flocculation of colloidal gold nanoparticles capped with biomolecules | - |
dc.title.alternative | 생체분자가 결합된 금 나노 입자의 크기에 따른 응집 현상에 관한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 249583/325007 | - |
dc.description.department | 한국과학기술원 : 생명화학공학과, | - |
dc.identifier.uid | 020033210 | - |
dc.contributor.localauthor | Chang, Yong-Keun | - |
dc.contributor.localauthor | 장용근 | - |
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