請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/8027
標題: | "銀金屬在聚(3,4-二氧乙烯基噻吩)-聚苯乙烯磺酸的成長機制與形態探討" Investigation of Growth Mechanism and Silver Morphology in the PEDOT-PSSA |
作者: | Jyun-Hong Liou 劉峻宏 |
指導教授: | 廖文彬 |
關鍵字: | 聚(3,4-二氧乙烯基噻,吩)-聚苯乙烯磺酸,形態,導電度,樹枝狀銀金屬, PEDOT-PSSA,morphology,conductivity,dendritic silver, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | 本論文利用聚(3,4-二氧乙烯基噻吩)-聚苯乙烯磺酸(PEDOT-PSSA)具有氧化還原性質與硝酸銀進行還原反應,將其還原成銀金屬。並且透過反應參數的調控,探討銀金屬的形態變化。首先在還原時將PEDOT-PSSA大量稀釋的情況下,將導電度降低而藉由奈米銀顆粒的生成做為PEDOT的分布情形及尺寸之標定;接著在不稀釋時進行PEDOT-PSSA與硝酸銀的還原反應,比較不同濃度的PEDOT-PSSA對導電度的影響,並利用隨時間動態取樣的TEM鑑定,以澄清銀金屬的成長機制;最後在PEDOT-PSSA中加入過硫酸銨與硝酸銀進行還原反應,過硫酸銨同時破壞PEDOT的共軛結構,降低其導電度,也同時幫助銀金屬的成核及成長,且過硫酸銨是決定樹枝狀銀金屬結構生成的主要因素。 In this research, we have utilized the redox property of PEDOT-PSSA to conduct the reducing reaction of silver nitrate, and produced metallic silver. Through modifying the experimental parameters, we have investigated different silver morphologies. First, we have confirmed the distribution and size of PEDOT segments with lowering the conductivity in diluted PEDOT-PSSA. In order to compare the effect on the conductivity with different concentration of PEDOT-PSSA, we reduced silver nitrate to silver in the pristine concentration, and clarified the growth mechanism of silver with in-situ TEM observation. In the end, PEDOT-PSSA reacted with silver nitrate in additional ammonium persulfate (APS) solution. APS decomposed the conjugated structure of PEDOT, lowered the conductivity of PEDOT-PSSA and assisted both the nucleation and growth of the silver reduction simultaneously. Furthermore, APS is the major factor of generating the dendritic silver structure. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/8027 |
全文授權: | 同意授權(全球公開) |
電子全文公開日期: | 2023-08-17 |
顯示於系所單位: | 材料科學與工程學系 |
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檔案 | 大小 | 格式 | |
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ntu-102-1.pdf | 9.59 MB | Adobe PDF | 檢視/開啟 |
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