Morandeira Ramírez, AnaLópez Duarte, IsmaelMartínez Díaz, María VictoriaO'Regan, BrianShuttle, ChrisHaji-Zainulabidin, Nor A.Torres Cebada, TomásPalomares Gil, EmilioDurrant, James Robert2024-02-072024-02-072007Morandeira A, López-Duarte I, Martínez-Díaz MV, O’Regan B, Shuttle C, Haji-Zainulabidin NA, et al. Slow Electron Injection on Ru−Phthalocyanine Sensitized TiO 2. J Am Chem Soc 2007;129:9250–1. https://doi.org/10.1021/ja0722980.0002-786310.1021/ja0722980https://hdl.handle.net/20.500.14352/100092Photoinduced electron injection in dye sensitized TiO2 is a critical step in the function of dye sensitized solar cells. High electron injection quantum yields are a requirement to obtain efficient devices. While high electron injection quantum yields are usually linked to ultrafast electron-transfer dynamics (in the fs−ps timescales), the latter are not a requirement. We present here a system, Ru-phthalocyanine sensitized TiO2, where slow electron injection (kinj ≈ 450 ns-1) and efficient electron injection are compatible owing to the long lifetime of the injecting state, the Ru-phthalocyanine triplet state. Ru-phthalocyanine dyes are attractive sensitizers because they absorb strongly in the red and their axial ligands hinder the formation of aggregates.engjournal article1520-5126https://doi.org/10.1021/ja0722980https://pubs.acs.org/doi/10.1021/ja0722980restricted accessQuímica23 Química