Supramolecular Fullerene-Porphyrin Architectures

Supramolecular Fullerene-Porphyrin Architectures

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Описание
Within this thesis the synthesis and characterization of novel supramolecular wire-like donor-acceptor nanohybrids were investigated. In this particular light the focus was on fullerene- porphyrin architectures that are constructed via the six-folded hydrogen bonding Hamilton receptor cyanuric acid motif. Besides the synthesis and characterization of the building blocks their complexation behavior and the photophysical properties of the nanosystems were of tremendous interest. In difference to former examinations rigid spacers instead of flexible alkyl chains between chromophore and key/lock were introduced (i.e. p- phenylene-ethynylene, p-phenylene-vinylene, p- ethynylene, fluorene, etc.). The association constants of the complexes were analyzed using 1H NMR titration techniques as well as steady state fluorescence quenching approaches. Additionally time- resolved measurements were applied to illuminate the electron transfer behavior of the self-assembled donor-acceptor systems. These techniques gave clear evidence for spacer mediated electron transfer processes.