Inner-shell excitation studies of conducting organic polymers: selenophene, 3-methyl selenophene, and their polymers

Inner-shell electron energy loss spectra (ISEELS) of gaseous selenophene and 3-methylselenophene in the regions of Se 3d, Se 3p, Se 3s, and C 1s are presented and analyzed. The ISEELS spectra are compared to the C 1s near-edge X-ray absorption fine structure (NEXAFS) spectra of the corresponding polymers deposited electrochemically onto Pt, both with and without doping, to form the electrically conducting state. Methyl substitution at the …