Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From hydrocarbon reactant
Patent
1998-12-30
2000-10-03
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From hydrocarbon reactant
25229962, 25229963, 526284, 524779, 524783, 524785, C08G 6100, C08J 310
Patent
active
061275166
ABSTRACT:
The oxidation of 7,14-diphenylacenaphtho[1,2-.kappa.]fluoranthene (1) at platinum or indium tin-oxide electrodes leads to deposition of a polymer film on the electrode surface that displays many interesting properties including electroactivity, fluorescence, and electrochromism. Thin films of this polymer appear deep blue in the neutral state, but become pale grey upon oxidation and light green or orange upon reduction, depending upon the voltage applied. Soluble oligomers of poly(3,10-(7,14-diphenylacenaphtho[1,2-.kappa.]fluoranthene)) are formed during oxidation of the monomer (1) via radical cation-radical cation coupling reactions and are identical to those chemically synthesized by the Ni(0)-catalyzed coupling of the 3,10-dibromo derivative of 1. Further oxidation of these oligomers leads to intramolecular coupling reactions to form ladder structures within the chains and the eventual precipitation of insoluble polymer onto the electrode. Spectroscopic and electrochemical data for the polymer film and the isolated oligomers is presented.
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Bard Allen J.
Debad Jeff D.
Acquah Samuel A.
Board of Regents , The University of Texas System
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