臺灣博碩士論文加值系統

本論文研究包含兩部分，第一部分是關於銀奈米線於底板上形成銀奈米網狀結構之特性研究，銀奈米線在無施加電流、化學接枝、以及其他化學改質的條件下，可在底板上自組裝地形成均勻的網狀結構。從掃描式電子顯微鏡發現ITO底板上的銀奈米網狀結構會產生孔洞；從紫外光/可見光光譜觀察到塊材銀之可見光吸收峰會隨著底板上銀奈米線的數量增加而產生藍位移（Blue shift）；最後利用高溫將銀奈米線做熱處理以分析銀奈米線交聯的特性。在以上的結果可以發現銀奈米線的密度、底板材質和間距會影響表面電漿波的共振頻率。論文第二部分則是將第一部分的基板應用於Rhodamine 6G（R6G）在不同極性溶劑之偵測。從紅外光吸收光譜圖和拉曼光譜圖中發現，R6G在溶劑中的溶解度會受到極性和介電常數的影響，並且溶劑中的-OH官能基與R6G分子會產生氫鍵是分子間內聚力增大增強拉曼訊號。另外，在R6G的感測中，偵測極限可達10-9M，增顯因子可達107。拉曼訊號與R6G濃度呈現良好的線性關係，代表此增顯基板對於R6G之感測具有不錯的靈敏度與選擇性。

In this thesis, it studies on the large area nanonets derived from silver nanowires and its application to Surface-Enhanced Raman Scattering. The contents include two parts:
In first section, the nanonets derived from silver nanowires deposited on substrates was investigated and characterized. Silver nanowires would be spontaneously synthesized on substrate without any driving force such as potential, chemical grafting, surface modification. The scanning electron microscope (SEM) results revealed that the formation of holes on nanonets when the ITO glass was used as substrates. In addition, the UV/vis spectra showed that the surface plasmon resonant between silver substrate and silver nanowires. The crosslink of adjacent silver nanowires could be analyzed by annealing the nanonets. It was found that the weight flux of silver nanowires, substrate materials, and silver nanowires interval could affect the surface plasmon resonance.
In the second section, the silver nanowires and silver substrate sandwich-like structure was applied in analysis of Rhodamine 6G(R6G) interaction with different polar solvents. From the results of Infrared spectroscopy and Raman spectra, solubility could be affected by solvents polarity and dielectric constant. The hydroxyl functional group of solvents could form hydrogen bond and then it could enhance the Raman signal. In addition, in R6G sensing, it could achieve a limit of detection sensitivity of 10-9M and enhancement factor was 107. Besides, the Raman signal and R6G concentration showed a good linear relationship. This characteristic could be on behalf of the enhanced substrate had good sensitivity and selectivity in R6G sensing.

中文摘要 I
ABSTRACT II
誌謝 IV
目錄 V
圖目錄 VIII
符號 XI
第一章、緒論 1
1-1.奈米材料 1
1-1-1.奈米材料的特性與其應用 1
1-1-2.銀奈米材料的特性與其應用 4
1-2.表面增強拉曼散射 6
1-2-1.拉曼光譜原理 6
1-2-2.表面增強拉曼散射理論 8
1-2-3.表面增強拉曼散射之文獻回顧 12
1-3.表面增強拉曼散射之測物之簡介 15
1-3-1.表面增強拉曼散射待測物的種類 15
1-3-2.待測物用於表面增強拉曼散射之效果分析 16
1-4.銀奈米材料作為表面增強拉曼基板之簡介 18
1-4-1.銀奈米材料增強拉曼訊號的機制與特性 18
1-4-2.銀奈米線作為表面增強拉曼基板之文獻回顧 21
1-5.研究動機 23
第二章、銀奈米線的合成與網狀薄膜特性之結構及分析 34
2-1.銀奈米線的合成 34
2-1-1.銀奈米線製備 34
2-1-2.掃描式電子顯微鏡量測及性質確認 36
2-1-3.穿透式電子顯微鏡量測及性質確認 38
2-1-4 .X光繞射量測及性質確認 38
2-2.基板的組裝及特性 39
2-2-1.銀奈米線密度對網狀結構的影響 39
2-2-1-1.基板製備 39
2-2-1-2.表面形貌分析 40
2-2-1-3.表面電漿子共振波長分析 41
2-2-2.不同的底板金屬對銀奈米線形成網狀結構的影響 43
2-2-2-1.基板製備 43
2-2-2-2.表面形貌分析 44
2-2-2-3.表面電漿子共振波長分析 45
2-2-3.熱處理對網狀結構的影響 46
2-2-3-1.基板製備 46
2-2-3-2.表面形貌分析 47
2-2-3-3.表面電漿子共振波長分析 47
2-3.結論 49
第三章、奈米銀網狀結構應用於表面增強拉曼散射之研究 60
3-1.不同極性溶劑與RHODAMINE 6G分子交互作用之效應 60
3-1-1.前言 60
3-1-2.紅外線分子震動光譜分析 61
3-1-3.拉曼分子特性光譜分析 66
3-2.銀奈米網狀結構之表面增強拉曼散射結果 69
3-2-1.不同密度的銀奈米線披覆於基板之表面增強拉曼散射分析 69
3-2-2.銀奈米線披覆於不同底板之表面增強拉曼散射分析 71
3-2-3.經熱處理後網狀結構之表面增強拉曼散射分析 73
3-2-4.Rhodamine 6G溶於不同極性溶劑之表面增強拉曼散射分析 74
3-3.結論 75
第四章、總結與建議 96
4-1.總結 96
4-2.未來工作建議 97
參考文獻 98
自述 104

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