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Direct proof of electron transfer in a rigid first generation triphenyl amine core dendrimer substituted with a peryleneimide acceptor

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48459

Müllen,  Klaus
MPI for Polymer Research, Max Planck Society;

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Zitation

Lor, M., Jordens, S., De Belder, G., Schweitzer, G., Fron, E., Viaene, L., et al. (2003). Direct proof of electron transfer in a rigid first generation triphenyl amine core dendrimer substituted with a peryleneimide acceptor. Photochemical & Photobiological Sciences, 2(5), 501-510.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-621A-D
Zusammenfassung
The combination of nanosecond transient absorption experiments and single photon timing experiments proved the Occurrence of all electron transfer process in the triphenyl amine core dendrimer, NIP1, by demonstrating the presence of an ion-pair absorption for NIP1 in solvents of medium polarity. By means of femtosecond transient absorption measurements the rise time of this ion-pair absorption dominated by the radical anion absorption could be determined. resulting in a value of 180 ps in MeTHF and 138 ps in THF. Furthermore, in femtosecond fluorescence upconversion as well as in monochromatic femtosecond transient absorption, a few ps component was resolved which was assigned to a vibrational and solvent relaxation process of the locally excited singlet state of the peryleneimide.