Department of Chemistry
Synthesis, optical properties and photophysics of group 10–12 transition metal complexes and polymer derived from a central tris(p-ethynylphenyl)amine unit
A new series of luminescent group 10-12 metal alkynyl complexes and polyyne polymer containing a central tris(p-ethynylphenyl)amine bridging chromophore were prepared. The regiochemical structures of these triangular-shaped trinuclear compounds and polymer were studied by various spectroscopic and photophysical analyses. Upon photoexcitation, each of them emits an intense purple-blue fluorescence emission in the near UV region in dilute fluid solutions at room temperature. Harvesting of organic triplet emissions observed in the low-energy region harnessed through the strong heavy-atom effects of group 10-12 transition metals was examined and the results were compared among these three neighboring late transition metal elements. The influence of group 15 nitrogen-based heteroatom on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons was fully elucidated and a comparison was made to the nearest group 14 and 16 neighbors in the same row of the Periodic Table. © 2008 Springer Science+Business Media, LLC.
Alkyne, Metallopolyyne, Transition metal, Triphenylamine, Triplet emission
Source Publication Title
Journal of Inorganic and Organometallic Polymers and Materials
Link to Publisher's Edition
Wong, Wai-Yeung, Yanhe Guo, and Cheuk-Lam Ho. "Synthesis, optical properties and photophysics of group 10–12 transition metal complexes and polymer derived from a central tris(p-ethynylphenyl)amine unit." Journal of Inorganic and Organometallic Polymers and Materials 19.1 (2009): 46-54.