Poly(N-methylisoindole) is prepared by chemical and electrochemical me
thods and its properties are reported: the polymer shows interesting o
ptical, electrochromic and conducting behaviour. It shows a colour cha
nge (golden to near colourless) on oxidation associated with absorptio
n in the near infrared (lambda(max) about 1400 nm) in the doped polyme
r and an intrinsic bandgap of about 2 eV.