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Synthesis and Isolation of Titanium Metal Cluster Complexes and Ligand-Coated Nanoparticles with a Laser Vaporization Flowtube Reactor

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Abstract

A new laser vaporization flow reactor (LVFR) is described consisting of a laser ablation cluster source combined with a fast flowtube reactor for the production and isolation of ligand-coated metal clusters. The source includes high repetition rate laser vaporization with a 100 Hz KrF (248 nm) excimer laser, while cluster growth and passivation with ligands takes place in a flowtube with ligand addition via a nebulizer spray. Samples are isolated in a low temperature trap and solutions containing the clusters are analyzed with laser desorption time-of-flight mass spectrometry. Initial experiments with this apparatus have trapped Ti x (ethylenediamine) y complexes which apparently have linear metal units with octahedral ligand coordination. Other experiments have produced and isolated clusters of the form Ti x O y (THF) z that apparently have linear metal oxide cores and larger (TiO2) x (THF) y nanoparticle species. The isolation of these new cluster species suggest that the LVFR instrument has considerable potential for the production of new nanocluster materials.

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Authors and Affiliations

  1. Department of Chemistry, University of Georgia, Athens, Georgia, 30602-2556

    T. M. Ayers, J. L. Fye, Q. Li & M. A. Duncan

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  1. T. M. Ayers
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  2. J. L. Fye
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  3. Q. Li
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  4. M. A. Duncan
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Ayers, T.M., Fye, J.L., Li, Q. et al. Synthesis and Isolation of Titanium Metal Cluster Complexes and Ligand-Coated Nanoparticles with a Laser Vaporization Flowtube Reactor. Journal of Cluster Science 14, 97–113 (2003). https://doi.org/10.1023/A:1024885403308

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