Vibronic intensity enhancement in the infrared spectra of heavily doped (CH)_x and (CD)_x

Fourier Transform IR transmission spectroscopy has been utilized to elucidate the nature of the polymer-dopant interaction in doped (CH) x. Significant changes in the IR spectrum occur after doping and several intense bands at 1385, 1295, and 832 cm-1 have been observed and their shifts studied upon deuteration. The origin of these intense features can be attributed to a vibronic activation and enhancement of the totally symmetric Raman active Ag modes in the IR spectrum. © 1979 American Institute of Physics.