Intrachain Electron and Energy Transfer in Conjugated Organometallic Oligomers and Polymers
Open Access
- 15 September 2008
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 14 (27) , 8341-8352
- https://doi.org/10.1002/chem.200800304
Abstract
The synthesis of polymers of the type (-Cz-CC-PtL2-CC-Cz-X-)n along with the corresponding model compounds (Ph-PtL′2-CC-Cz)2-X-, where Cz=3,3′-carbazole, X=nothing, Cz, or F (2,2′-fluorene), L=PBu3, and L′=PEt3 are reported. The electronic spectra (absorption, excitation, emission, and ns-transient spectra) and the photophysics of these species in 2-methyltetrahyrofuran (2MeTHF) at 298 and 77 K are presented. Evidence for singlet electron and triplet energy transfer from the Cz chromophore to the F moiety are provided and discussed in detail. The rate for electron transfer is very fast (>4×1011 s−1), whereas that for triplet–triplet energy transfer is much slower (≈103 s−1). This work represents a very rare example of studies that address electronic communication in the backbone of a conjugated organometallic polymer.Keywords
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