ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Quinoid thiophene oligomers 6, 7 and 8 were prepared and characterized as model compounds of small bandgap polymers and were shown to have solid state bandgaps in the range of 1.31-2.15 eV and a lowest energy solution optical absorption maximum (λmax) of 480-676 nm. It was found that the bandgap and ionization potential decrease and electron affinity increases with increasing size of the quinoid oligomer. These results of the model compound studies are in agreement with theoretical predictions for the electronic properties of polythiophene with quinoid geometry and suggest that small bandgap polymers can be achieved by direct incorporation of quinoid structure in the polymer backbone.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
