Synthesis and photophysical properties of new oligophenylene vinylenes showing amplified spontaneous emission

• We synthesized three new oligophenylene vinylenes.
• Their photophysical properties were assessed.
• Amplified sponataneous emission was studied in films of two of these oligomers.
• Two-photon absorption studies were carried out in one of them.

Three new phenylene vinylene oligomers containing either a bis(oligoether)phenyl ring or a benzothiadiazole central unit and either carbazole or triphenylamine end capping groups were synthesized and characterized. The photophysical characterization in solution reveals a significant variation in properties depending on the combined moieties. Amplified spontaneous emission in neat drop cast films of two of these compounds was studied. One of them was also characterized in terms of its two-photon photoluminescence.