Department of Chemistry
Intrachain electron and energy transfer in conjugated organometallic oligomers and polymers
The synthesis of polymers of the type (-Cz-C≡C-PtL 2-C≡C-Cz-X-)n along with the corresponding model compounds (Ph-PtL′2-C≡C-Cz)2-X-, where Cz = 3.3′-carbazole, X = nothing, Cz, or F (2,2′-fluorene), L = PBu 3, 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 (≈ 103s-1). This work represents a very rare example of studies that address electronic communication in the backbone of a conjugated organometallic polymer. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Alkynes, Electron transfer, Energy transfer, Fluorene, Metallopolymers, Phosphorescence, Platinum
Source Publication Title
Chemistry - A European Journal
Aly, Shawkat Mohammed, Cheuk-Lam Ho, Daniel Fortin, Wai-Yeung Wong, Alaa S. Abd-El-Aziz, and Pierre D. Harvey. "Intrachain electron and energy transfer in conjugated organometallic oligomers and polymers." Chemistry - A European Journal 14.27 (2008): 8341-8352.