Electronic properties of the conducting form of polyaniline from electroabsorption measurements
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چکیده
The polaron band at 1.4 eVof d,l-camphorsulfonic acid-doped polyaniline (( )-HCSA-PANI) in a poly(methyl methacrylate) (PMMA) matrix was studied using electroabsorption (Stark-effect) spectroscopy at 298 K. A very small change in dipole moment on excitation (jDmj) in the order of 1:4 0:2 D was measured as well as an average change in polarizability (Da) of only ÿ1:3 0:4 AÊ . The electroabsorption signal of ( )-HCSA-PANI in this region showed evidence for heterogeneity in the absorption band. # 2001 Elsevier Science B.V. All rights reserved.
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تاریخ انتشار 2000