Synthesis and Characteristics of UV absorption and Electrochemistry Based on tris(4-(diphenylamino)phenyl)methanol
Date Issued
2010
Date
2010
Author(s)
Chen, Yan-Shan
Abstract
We synthesized a series of Polycyclic aromatic amine-based compounds F1~F6 through Suzuki-Miyaura coupling and Büchwald-Hartwig C-N coupling. We measured their physical properties including electrochemical properties, UV absorption and Spectroelectrochemical characterization; meanwhile, we fabricated their films by electropolymerization. We observed bathochromic shift in the UV absorption spectrum as the conjugation length extended with increasing number of bridge molecule. The influence of triphenylamine is on the extent of ionization of OH group instead of on the absorption wavelength after ionization. We fabricated films of compound F1~F4 on the surface of ITO conducting glasses by electropolymerization.
After summarized the electrochemical and photophysical properties, we chosed the film of F2 by chemical polymerization to proceed the absorption spectrum measurement under different potential, it turned out that different film color can be observed. The film F2 requried 1.9 s for coloration at 500 nm and 2.8 s for bleaching. The coloring efficiency η (500 nm) = 74.34 cm2C-1. The film F2 requried 6.4 s for coloration at 750 nm and 3.7 s for bleaching. The coloring efficiency η (750 nm) = 39 cm2C-1.
Subjects
tris(4-(diphenylamino)phenyl)methanol
electrochromism
Type
thesis
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