Ruthenium trisbipyridine C60 dyads linked viapara-phenyleneethynylene units have been prepared. They displayed a rapid energy transfer from Ru to C60 with a rate that was independent of distance, from 1.1 to 2.3 nm. The results are explained by a hopping mechanism involving a bridge-localized excited-state. In fact, for the longest bridge this state was lower in energy than the Ru-based MLCT state, as evidenced by the spectroscopic data.
Host-Guest Complexation of [60]Fullerenes and Porphyrins Enabled by “Click Chemistry”
作者:Khanh-Hy Le Ho、Ismail Hijazi、Lucie Rivier、Christelle Gautier、Bruno Jousselme、Gustavo de Miguel、Carlos Romero-Nieto、Dirk M. Guldi、Benoit Heinrich、Bertrand Donnio、Stéphane Campidelli
DOI:10.1002/chem.201300793
日期:2013.8.19
dendritic fulleropyrrolidine bearing two pending porphyrins are reported. Both the dendron and the fullerene derivatives were synthesized by CuI‐catalyzed alkyne–azide cycloaddition (CuAAC). The electron‐donor–acceptor conjugate possesses a shape that allows the formation of supramolecular complexes by encapsulation of C60 within the jaws of the two porphyrins of another molecule. The interactions between