کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10276301 | 463424 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel trends of electrochemical oxidation of amino-substituted triphenylamine derivatives
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of amino-substituted triphenylamine derivatives have been synthesized and the electrochemical and spectral characteristics has been investigated. Triphenylamine is also used as a reference. p-Amino-triphenylamine (1) showed two reversible redox couples at E1/2Â =Â 0.59 and 1.09 V in CH2Cl2. The stable cation radical 1+ was generated electrochemically and exhibited strong bands in the visible region as determined in situ by UV/Vis/NIR spectroelectrochemical methods. The second oxidation product 12+ could be generated electrochemically, but was not very stable after long time electrolysis at applied potentials higher than 1.15 V. p,pâ²-Diamino-triphenylamine (2), p-methyl-pâ²,pâ³-diamino-triphenylamine (2a), p-methoxy-pâ²,pâ³-diamino-triphenylamine (2b) and p,pâ²,pâ³-triamino-triphenylamine (3) are more stable in CH3CN than in CH2Cl2 during cyclic scans at oxidation potentials. The oxidation potentials of the various amino-substituted TPA derivatives and the stability of the oxidized products are solvent-dependent and relate to the molecular structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 575, Issue 1, 15 January 2005, Pages 95-101
Journal: Journal of Electroanalytical Chemistry - Volume 575, Issue 1, 15 January 2005, Pages 95-101
نویسندگان
Kuo Yuan Chiu, Tsi Xiang Su, Jia Hong Li, Tsung-Hsien Lin, Guey-Sheng Liou, Shu-Hua Cheng,