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Self-Assembled Supramolecular Ferrocene−Fullerene Dyads and Triad: Formation and Photoinduced Electron Transfer
Self-Assembled Supramolecular Ferrocene−Fullerene Dyads and Triad: Formation and Photoinduced Electron Transfer
- Source :
- The Journal of Physical Chemistry C. 112:2222-2229
- Publication Year :
- 2008
- Publisher :
- American Chemical Society (ACS), 2008.
-
Abstract
- Supramolecular ferrocene−fullerene constructs in which the donor, ferrocene linked to a benzo-18-crown-6 entity (Fc-crown), was self-assembled with the acceptor, fullerene bearing one or two alkyl ammonium ions (NH3+−C60), yielding dyads or a triad, respectively. The newly formed conjugates were characterized by spectroscopic (fluorescence, electospray ionization-mass, and 1H NMR) and electrochemical methods. The adopted crown ether−alkyl ammonium ion binding strategy resulting in stable donor−acceptor conjugates was also supported by the computational studies performed at the DFT B3LYP/3-21G(*) level in addition to the binding constants obtained from fluorescence quenching studies. The experimentally calculated free-energy changes indicated exothermic light-induced charge-separation process. Accordingly, efficient photoinduced charge-separation processes were confirmed by the combination of the time-resolved fluorescence and nanosecond transient absorption spectral measurements. The rates of charge recom...
- Subjects :
- chemistry.chemical_classification
Fullerene
Supramolecular chemistry
Photochemistry
Acceptor
Photoinduced electron transfer
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
General Energy
Ferrocene
chemistry
Ultrafast laser spectroscopy
Physical and Theoretical Chemistry
Ammonium ion binding
Alkyl
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 112
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........4615740088f321843f26a7f1b8a35255
- Full Text :
- https://doi.org/10.1021/jp077699g