Photovoltaic properties of 3,3′-(ethane-1,2-diylidene)-bis(indolin-2-one) based conjugated polymers

3,3′-(Ethane-1,2-diylidene)-bis(indolin-2-one) (EBI) is a π-conjugated structure in which two oxindoles are connected by a 1,3-butadiene. Two new polymers based on EBI have been synthesized and their photovoltaic properties have been studied.

A facile method to synthesize [A′(D′AD)2]-based push–pull small molecules for organic photovoltaics

Synthesis of promising new composition low band gap small molecules based on the push–pull (donor–acceptor) system, which displayed power conversion efficiency of up to 3.24%.