Synthesis and Electrochemical Studies of a Novel Triphenylamine Derivative
碩士 === 國立暨南國際大學 === 應用化學系 === 97 === A novel triphenylamine derivative, 4,4'-bis(4-aminophenyl)-4"-methoxytriphenylamine (BAPMTPA), was synthesized successfully by Suzuki coupling reaction. This new compound bears a 4-methoxytriphenylamine (MTPA) unit fused with two aminophenyl groups on t...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/29957563550799998923 |
| Summary: | 碩士 === 國立暨南國際大學 === 應用化學系 === 97 === A novel triphenylamine derivative, 4,4'-bis(4-aminophenyl)-4"-methoxytriphenylamine (BAPMTPA), was synthesized successfully by Suzuki coupling reaction. This new compound bears a 4-methoxytriphenylamine (MTPA) unit fused with two aminophenyl groups on the para sites. Cyclic voltammetry (CV) of BAPMTPA in CH3CN containing 0.1 M TBAP revealed three pairs of oxidation and reduction waves. Spectral studies of BAPMTPA in CH3CN showed absorption band at 335 nm. Blue light fluorescence at 428 nm was observed when BAPMTPA in CH3CN was excited at 345 nm. BAPMTPA can be electropolymerized onto glassy carbon and ITO electrodes. The corresponding conducting polymer PBAPMTPA on ITO has been characterized by cyclic voltammetry, exhibiting two reversible redox couples at E1/2 = 0.65 and 0.94 V, respectively. PBAPMTPA on ITO showed a new absorption band λmax at 355 nm. The polymer film on ITO exhibited high stability after electrochemical repeated scans (100 cycles) in CH3CN containing 0.1 M TBAP. Spectroelectrochemical experiments showed that PBAPMTPA on ITO displayed electrochromic properties at applied potentials between 0 to 1.05 V in CH3CN containing 0.1 M TBAP. The PBAPMTPA on ITO reveal dual color switching from neutral state to oxidation state and 33 % optical contrast at 850nm. PBAPMTPA showed fast switching time for oxidation state as 1.7 s at 850 nm. The PBAPMTPA revealed short memory effect at oxidized form.
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