Electronic Properties and Structure in Conjugated Polymeric Systems.

摘要

The relation between chemical structure and electronic properties for three classes of organic polymers with systems of conjugated double bonds was studied. The three classes include linear polyalkynes, wholly aromatic polybenzimidazoles, and highly crosslinked polyacene quinone radical (PAQk) polymers. The wide range of electronic properties observed QTh for these polymers lends support to the view that highly conjugated polymer molecules exist in the form of stable biradicals and that the enhanced electronic behavior of these materials is directly related to the biradical population which may be observed by electron spin resonance spectroscopy. Infrared absorption spectra were obtained for several PAQR polymers by the KBr pressed disk technique, and a structure consistent with spectroscopic and chemical evidence has been proposed for phenolphthalein PAQR polymers.