臺灣博碩士論文加值系統

本研究中，我們設計一有機介面連結分子，該分子包含一端可與Pt粒子進行化學吸附的SH基團；另一端可作為ATRP聚合反應之起始劑的alkyl bromide及連結兩官能基的alkyl spacer。再將前述的介面連結分子吸附及自組裝於Pt粒子表面上，藉以將白金粒子分散於有機溶劑中，如THF、chloroform等。白金粒子之合成是以NaBH4作為還原劑，將H2PtCl6．xH2O還原成白金粒子。然後，利用ATRP方法進行surface-initiated polymerization，將polystyrene成長於奈米粒子表面，隨後再以SDS(sodium dodecyl sulfate)為界面活性劑，將奈米粒子分散在水中。最後以NMR、IR、TEM、XRD、DLS等方式來探討此白金奈米粒子的性質。

In this research, we design a series of organic interfaces and link molecular, SH base group that this molecular includes one end and can absorb chemistry with platinum nanoparticles; another end can as initial alkyl bromide of ATRP of polyreaction, link two sense alkyl spacer of base. The molecule absorbs and assembles on the surface in Pt particle, make use of it in order to disperse the platinum nanoparticlse in the organic solvent, for instance toluene, THF, chloroform, etc.. It is to regard NaBH4 as the reducing agent, reduce H2PtCl6•xH2O into a platinum particle that platinum particle is synthetic. And then disperse the platinum particle in the organic solvent with this molecule. Then utilize ATRP method carry on surface-initiated polymerization to polymerize polystyrene on surface of platinum nanoparticles. After that regard SDS (sodium dodecyl sulfate) as the surfactant to disperse the platinum nanoparticlse in the water. Finally, the Pt particle were characterized by NMR, IR, TEM, XRD and DLS.

中文摘要．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．i
英文摘要．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．ii
目錄．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．iii
表目錄．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．v
圖目錄．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．vi
第一章 緒論．．．．．．．．．．．．．．．．．．．．．．．．．．．．1
1.1 奈米科技之介紹 ．．．．．．．．．．．．．．．．．．．．．．．．1
1.2 奈米材料之性質 ．．．．．．．．．．．．．．．．．．．．．．．．3
1.2.1 表面效應．．．．．．．．．．．．．．．．．．．．．．．．．．3
1.2.2 量子侷限效應．．．．．．．．．．．．．．．．．．．．．．．．4
1.2.3 體積效應．．．．．．．．．．．．．．．．．．．．．．．．．．5
1.2.4 奈米粒子的形狀．．．．．．．．．．．．．．．．．．．．．．．5
1.2.5 催化特性．．．．．．．．．．．．．．．．．．．．．．．．．．5
1.2.6 光學性質．．．．．．．．．．．．．．．．．．．．．．．．．．6
1.3 研究目的 ．．．．．．．．．．．．．．．．．．．．．．．．．．．7
第二章 文獻回顧 ．．．．．．．．．．．．．．．．．．．．．．．．．．8
2.1 金屬奈米粒子 ．．．．．．．．．．．．．．．．．．．．．．．．．8
2.2 金屬奈米粒子之製備．．．．．．．．．．．．．．．．．．．．．．11
2.2.1 金屬奈米粒子之製備方式 ．．．．．．．．．．．．．．．．．．11
2.2.1.1 雷射消熔法(laser ablation method) ．．．．．．．．．．．．．11
2.2.1.2 金屬氣相合成法(metal vapor synthesis method) ．．．．．．．12
2.2.1.3 化學還原法(chemical reduction method) ．．．．．．．．．．13
2.2.2 NaBH4之還原機制 ．．．．．．．．．．．．．．．．．．．．．19
2.3 奈米粒子之表面修飾．．．．．．．．．．．．．．．．．．．．．．21
2.3.1 自組裝薄膜(Self Assembly Monolayers)．．．．．．．．．．．．．21
2.3.2 保護劑之影響 ．．．．．．．．．．．．．．．．．．．．．．．22
2.3.3 吸附類型 ．．．．．．．．．．．．．．．．．．．．．．．．．23
2.4 原子轉移自由基聚合反應．．．．．．．．．．．．．．．．．．．．27
2.4.1單體(monomer) ．．．．．．．．．．．．．．．．．．．．．．28
2.4.2起始劑(initiators) ．．．．．．．．．．．．．．．．．．．．．．29
2.4.3催化劑(catalysts) ．．．．．．．．．．．．．．．．．．．．．．31
2.4.4溶劑(solvent) ．．．．．．．．．．．．．．．．．．．．．．．32
2.4.5溫度和反應時間(temperature and reaction time) ．．．．．．．．．32
第三章 實驗方法．．．．．．．．．．．．．．．．．．．．．．．．．．33
3.1 實驗藥品．．．．．．．．．．．．．．．．．．．．．．．．．．．33
3.2 分析儀器．．．．．．．．．．．．．．．．．．．．．．．．．．．38
3.3 白金奈米粒子之合成．．．．．．．．．．．．．．．．．．．．．．41
3.4 2-mercapto ethyl-2-bromo-2-methyl propionate之合成．．．．．．．．．42
3.5 白金奈米粒子與作吸附．．．．．．．．．．．．．．．．．．．．．43
3.6 PS@Pt核殼型奈米粒子之合成．．．．．．．．．．．．．．．．．．44
3.7 PS@Pt核殼型奈米粒子分散於水中之合成．．．．．．．．．．．．．46
第四章 結果與討論．．．．．．．．．．．．．．．．．．．．．．．．．47
4.1 白金奈米粒子之性質分析．．．．．．．．．．．．．．．．．．．．47
4.2 2-mercapto ethyl-2-bromo-2-methyl propionate之性質分析．．．．．．．50
4.3白金奈米粒子與作吸附之性質分析 ．．．．．．．．．．．．．．．．53
4.4 PS@Pt核殼型奈米粒子之性質分析．．．．．．．．．．．．．．．．56
4.5 PS@Pt核殼型奈米粒子分散在水中之性質分析．．．．．．．．．．．60
第五章 結論．．．．．．．．．．．．．．．．．．．．．．．．．．．．63
參考文獻．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．64

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