Tejerina, LaraCaballero, EsmeraldaVictoria Martinez-Diaz, M.Nazeeruddin, Mohammad KhajaGratzel, MichaelTorres, Tomas2017-01-242017-01-242017-01-24201610.1142/S1088424616501121https://infoscience.epfl.ch/handle/20.500.14299/133820WOS:000390248600053A new carboxy-Zn(II) phthalocyanine bearing rigid 2,6-diarylphenyl peripheral substituents linked to the macrocycle through alkynyl spacers has been prepared by a convergent approach, which implies a triple Sonogashira coupling between the formyltriiodoZnPc and the corresponding terminal alkyne. Indeed, the introduction of this type of pi-conjugated peripheral substituents accounts for a remarkable red shift of the phthalocyanine Q-band until ca. 700 nm. However, aggregation phenomena could not be supressed and may explain the moderate overall efficiencies achieved with these devices.phthalocyaninessolar cellspi-conjugated systemsnear IR dyestext::journal::journal article::research article