ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The electrical conductivity, σ, of different samples of SbCl5-doped thianthrenic polymers is found to vary from 10-6 to 10-3 S · cm-1. The relationship between conductivity and dopant concentration is examined for one representative sample and a transition from an insulator to a semiconductive regime is observed near a dopant/repeating unit mole ratio of 0.06, above which σ tends to saturate. A detailed infrared analysis of the doped polymers, essentially based on a comparison with the pristine (undoped) polymers and the thianthrene-SbCl5 (1:1) complex as a model compound, is reported. A first tentative assignment of the IR spectrum of this complex is made. Additional absorptions are observed near 1120 and 1080 cm-1 and are common features of all the doped thianthrenic polymers. The new peaks, which increase with dopant concentration, seem to be intrinsic vibrations of the polymer chains in the doped material and are referred to stretching modes of C—S—C groups enhanced by complexation. Another characteristic absorption around 340-325 cm-1, due to Sb—Cl stretching modes of the dopant species, is discussed.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1990.021911118
