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聚胺基酸輔助金奈米粒子合成及組裝特性之研究 = The studies ...

國立高雄大學化學工程及材料工程學系碩士班

聚胺基酸輔助金奈米粒子合成及組裝特性之研究 = The studies of poly(amino acid) assisted synthesis and assembling behavior of gold nanoparticles

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	The studies of poly(amino acid) assisted synthesis and assembling behavior of gold nanoparticles
作者:	徐穎慧,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2012[民101]
面頁冊數:	90面圖，表格 : 30公分;
標題:	金奈米粒子
標題:	Au nanoparticles
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/78304130142902190904
附註:	參考書目：面73-78
摘要註:	本研究利用胺基酸中的聚賴胺酸(Poly-L-Lysine, PLL)與聚穀胺酸(Poly-L-Glutamic acid, PLGA)作為輔助金奈米粒子合成之材料。聚賴氨酸及聚穀胺酸皆為對人體無毒無害、可在純水相反應、不需使用有機溶劑的綠色材料，且合成複雜度低，相當符合近年來綠色化學的趨勢。本論文首先探討聚賴胺酸及聚穀胺酸分別在水溶液中輔助金奈米粒子合成的還原情況；接著進一步將聚賴胺酸披覆於基板上，觀察其在不同基板、不同鍍膜方式、不同pH值變化以及添加不同濃度NaCl所造成的影響；最後再利用逐層組裝(Layer by Layer)方式交疊鍍置聚賴胺酸與聚縠胺酸於基板上，並吸附還原氯金酸水溶液中的金離子以形成金奈米粒子，分別探討在Si或SiO2不同基板上、聚賴胺酸溶液中的NaCl離子添加、氯金酸水溶液pH值以及是否有聚縠胺酸交疊等等因素，對還原金粒子粒徑和對析出量的影響。由實驗結果得知，聚賴胺酸與聚穀胺酸在水溶液中皆具有還原金奈米粒子的能力，而溶液中pH值的上升會使反應速率降低。另由中性、無NaCl添加的PLL鍍製在基板上並吸附還原矽酸四甲酯(Tetramethyl orthosilicate, TMOS)的情況來看，無論在Si或SiO2基板上，浸鍍法所鍍製的薄膜皆較旋鍍法來得平整，且披覆於Si基板上的PLL膜層較披覆於SiO2基板上來得厚；同時PLL溶液中的NaCl濃度及pH值不同會影響披覆於基板上的PLL吸附TMOS後的表面形貌。在基板上的金粒子還原方面，披覆於Si基板上之PLL對金奈米粒子的還原效果明顯較在SiO2基板上來得佳，可能原因為高分子披覆時露出的表面官能基狀態不同所致。且氯金酸水溶液的pH值會影響金奈米粒子於基板上的還原效果，當氯金酸水溶液pH值上升會使Si基板上PLL所還原金奈米粒子粒徑隨之上升，而在SiO2基板上則以pH=9時的還原粒子量最多。在中性環境下，添加NaCl於PLL溶液中會增加於SiO2基板上的奈米粒子還原量，卻會降低在Si基板上的奈米粒子還原量，可能原因為NaCl解離之離子分別對基板或PLL作用的綜合結果。 In this work, we used Poly-L-Lysine (PLL) or Poly-L-Glutamic acid (PLGA) to assist the synthesis of gold nanoparticles. Both PLL and PLGA are poly-peptides with non-toxic, and harmless for the environment and human. Therefore, our nanoparticle synthesis process is consistent with the recent trend of green chemistry.The PLL or PLGA solutions ware prepared respectively by dissolving PLL or PLGA in D.I. water. After adding a freshly prepared HAuCl4 solution to the poly-peptide solutions and stirring, the solution color slowly changed with time. The variation of solution color was attributed to the surface plasmon resonance of gold nanoparticles. The experimental results showed that both the PLL and PLGA successfully assisted the synthesis of gold nanoparticles. The particle size increased with the reaction time but with the reduction of pH value. The influences of reaction time and solution pH value on the precipitated Au nanoparticles were discussed. By employing an appropriate solution conditions (e.g. reduction time and solution pH value), we can obtain the Au nanoparticle with an adequate size for application.Then the PLL/PLGA multilayer or the PLL monolayer was fabricated by using spin or dip-assisted layer-by-layer (LBL) assembly process on Si or SiO2 substrate. The experimental results showed that the surface morphology of PLL on the substrate changed with the pH value and the ionic strength of the solutions. Then Au nanoparticles were successfully reduced from the PLL adsorbed Au ions by heating. The difference between the reductions of Au particles on the two substrates was discussed.

聚胺基酸輔助金奈米粒子合成及組裝特性之研究 = The studies of poly(amino acid) assisted synthesis and assembling behavior of gold nanoparticles
徐, 穎慧

聚胺基酸輔助金奈米粒子合成及組裝特性之研究 = The studies of poly(amino acid) assisted synthesis and assembling behavior of gold nanoparticles / 徐穎慧撰 - [高雄市] : 撰者, 2012[民101]. - 90面 ; 圖，表格 ; 30公分.
參考書目：面73-78.
金奈米粒子Au nanoparticles

聚胺基酸輔助金奈米粒子合成及組裝特性之研究 = The studies of poly(amino acid) assisted synthesis and assembling behavior of gold nanoparticles
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