自組裝聚苯胺複合物超分子結構合成與研究

本實驗以乙烯氧寡聚體之2種不同分子量(PEOPA、DEGPA)磷酸根衍生物以不同比例摻雜聚苯胺。由紫外光-可見光吸收光譜分析結果顯示，當摻雜度越高、含短鏈DEGPA越多，可讓摻雜態聚苯胺在溶液中的熱穩定性提高。紅外線光譜分析顯示，若PEOPA含量增加且摻雜度高，聚苯胺會形成極子晶格型態。熱重分析結果顯示，若聚苯胺摻雜程度高或長鏈段PEOPA比例越高時熱裂解在越高溫才會發生，這是因為長乙烯氧鏈段之PEOPA使其耐熱性提高。示差掃瞄熱卡計結果顯示，DEGPA因所含乙烯氧鏈過短使其無熔融相變化發生，以各種不同莫耳比例摻雜比較，發現隨著摻雜比例下降或DEGPA含量增加時，其吸熱峰往低溫移動且熔解焓值降低，這是因PEOPA在聚苯胺中單位面積數量減少，且PEOPA之間距離過遠所致。

關鍵字

聚苯胺；聚氧乙稀；超分子

並列摘要

Two different molecular weights (PEOPA, DEGPA) phosphate derivatives of ethylene oxide oligmer were used to dope polyaniline by different molar ratio. The UV-vis absorption analysis indicates that high doping degree or high ratio of DEGPA doped polyanilines have more stabilized thermal property in solution. The IR spectra results indicate if PEOPA ratio or high doping degree increase, polyaniline will form polaron lattic structure. The TGA results indicate that high doping degree polyaniline or containing high ratio of PEOPA load thermal pyrolysis to occur at high temperature. This is attribute to the that long ethylene oxide chain of PEOPA improve thermal resistance. The DSC results indicate that DEGPA’s ethylene oxide chain is too short to have no melting phase transition. In comparison with various doping molar ratio, the endothermal peaks move to low temperature and melting enthalpy decrease with decreasing doping degree or increasing DEGPA ratio. This is due to the decrease of number of PEOPA per unit area in polyaniline resulting a long PEOPA distance to crystalize difficultly.

並列關鍵字

polyaniline ； PEO ； supramolecular

參考文獻

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J. Am. Chem. SOC. 1986, 108, 8311

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自組裝聚苯胺複合物超分子結構合成與研究

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