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  • 學位論文

鄰-苯二胺化合物的合成與電化學研究

Synthesis and Electrochemical Studies of ortho-Phenylenediamines

指導教授 : 蘇玉龍
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摘要


本論文為利用循環伏安法和光譜電化學法研究鄰苯二胺化合物的電化學性質。研究結果顯示,當胺基的對位有取代基保護時,在循環伏安圖中可以觀察到可逆的氧化反應,顯示取代基具有保護的作用。推電子取代基使鄰苯二胺較容易氧化,拉電子取代基則使鄰苯二胺較難氧化。利用光譜電化學可測定化合物氧化後的穩定性,鄰苯二胺氧化後,其吸收光譜在近紅外光區有吸收峰產生,推測為鄰苯二胺之其中一個氮原子氧化後,產生了價間電荷轉移現象所致。

並列摘要


Electrochemical properties of a series of ortho-phenylenediamines have been studied by using cyclic voltammetry and spectroelectrochemical method. The para-substituents, methyl and methoxy groups could provide the steric protection to the oxidized ortho-phenylenediamine, prevent it from undergoing dimerization and polymerization. Furthermore, strong electron donating methoxy group could stabilized the oxidized ortho-phenylenediamine, exhibits a more negative oxidation potential. UV/Vis/NIR spectroelectrochemical method was used to monitor ortho-phenylenediamine oxidation. Broad band absorptions at near-infrared region in the absorption spectra of compound 4、5 and 6 indicate intervalence charge transfer occurred between nitrogens.

參考文獻


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