Synthesis and characterization of porphyrin-terthiophene and oligothiophene π-conjugated copolymers for polymer solar cells

Synthesis and characterization of novel D–A porphyrin-containing copolymers for polymer solar cells

“…Regarding the threshold HOMO energy level for air stable conjugated polymers being estimated to be −5.2 eV [31,32], the deep HOMO levels of the P1 and P2 should be beneficial to their chemical stability in ambient conditions. Similarly, the LUMOs of P1 and P2 are higher by 0.75 eV and 0.62 eV than the LUMO of PC 61 BM (−4.2 eV), which indicate that the polymers blended with PC 61 BM are suitable for efficient charge transfer and separation at the interface between the donor and acceptor [33]. The band gap of P1 and P2 calculated from the electrochemical measurement are 2.02 eV and 1.86 eV, respectively.…”

Supramolecular arrangements of an organometallic forming nanostructured films

“…This ability comes from their intense Soret and moderate Q bands allowing to collect visible light efficiently in the light-harvesting process 10 and thus make them promising for use in solar energy conversion [10][11][12] and in light harvesting [13][14][15] . Most applications involving porphyrins and their derivatives are related to devices such as catalysts [16][17][18] and sensors [19][20][21][22][23][24] . Therefore, it is essential the improvement and the development of techniques to obtain porphyrin forming supramolecular structures 25 .…”

Copolymerisation as a way to enhance the electrochromic properties of an alkylthiophene oligomer and a pyrrole derivative: copolymer of 3,3′″ dihexyl-2,2′:5′,2″:5″,2′″-quaterthiophene with (R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-α-phenylglycinate

“…It seems that a synergic behaviour occurs displacing both the oxidation potential of the DNBP, even in higher proportion of DNBP in the mixture, as well as the E pa and E pc of the copolymer when compared with each homopolymer. This effect can be explained by the diminution of the steric hindrance caused by the voluminous groups present in DNBP and by the lateral alkyl chains present in DHQT [5,42].…”