Poluindole was synthesized via in-situ polymerization of indole monomer.
Polyindole displays visible band luminescence emission with distinct peaks.
At 0.83 GW/cm2 intensity, reverse saturable absorption is observed with 7 ns, 532 nm Gaussian laser pulses.
Optical limiting threshold and figure of merit of the compound is estimated to be 0.6 GW/cm2 and 4.37 × 10−12 esu cm respectively.