Abstract Two new dye sensitizers 5-(N, N-4-(diphenylamino) phenyl)-10-(4-(tert-butyl-2- cyanoacrylate) phenyl) porphyrin (TP) and 5-(N, N-4-(bis (4-butylphenyl) amino) phenyl)-10- (4-(tert-butyl-2-cyanoacrylate) phenyl) porphyrin (BUTP) with cyanoacrylic acid as electron acceptor were synthesized and researched. BUTP has strong absorption in a wide range of 300–726 nm. DSSCs sensitized by BUTP displayed a power conversion efficiency (η) ...