Novel nanographene/porphyrin hybrids – preparation, characterization, and application in solar energy conversion schemes

• DOI: 10.1039/c3sc51026c
• Publication Date: 2013-05-28T12:02:33Z
• Authors: Daniel Kiessling; Rubén D. Costa; Georgios Katsukis; Jenny Malig; Fabian Lodermeyer; Sebastian Feihl; Alexandra Roth; Leonie Wibmer; Matthias Kehrer; Michel Volland; Pawel Wagner; Gordon G. Wallace; David L. Officer; Dirk M. Guldi
• Keywords: Exfoliation joint

Four novel nanographene/porphyrin hybrids were prepared, characterized, and probed in solar energy conversion schemes. Exfoliation of graphite by means immobilizing four different porphyrins onto the basal plane graphene is accompanied distinct electronic interactions both ground excited states. In state, a strong loss oscillator strength goes hand-in-hand with notable broadening porphyrin transitions and, as such, attests to shift electron density from donating nanographene. nearly quantitative quenching fluorescence indicative full charge transfer. The latter corroborated femtosecond transient absorption measurements, which reveal generation one-electron oxidized radical cation maxima at 490 625 nm visible region conduction band electrons nanographene features 890 1025 near infrared region. We have demonstrated applicability new in, for example, cells. this regard, presence flakes crucial terms influencing injection processes, preventing aggregation, reducing recombination losses, are commonly encountered porphyrin-based DSSCs.