Heterocyclic Bismuth(III) Dithiocarbamato Complexes as Single-Source Precursors for the Synthesis of Anisotropic Bi2S3Nanoparticles

Walter N. Kun, Sixberth Mlowe, Linda D. Nyamen, Peter T. Ndifon, Mohammad A. Malik, Orde Q. Munro, Neerish Revaprasadu*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

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    Abstract

    New complexes catena-(μ2-nitrato-O,O′)bis(piperidinedithiocarbamato)bismuth(III) (1) and tetrakis(μ-nitrato)tetrakis[bis(tetrahydroquinolinedithiocarbamato)bismuth(III)] (2) were synthesised and characterised by elemental analysis, FTIR spectroscopy and thermogravimetric analysis. The single-crystal X-ray structures of 1 and 2 were determined. The coordination numbers of the BiIIIion are 8 for 1 and ≥6 for 2 when the experimental electron density for the nominal 6s2lone pair of electrons is included. Both complexes were used as single-source precursors for the synthesis of dodecylamine-, hexadecylamine-, oleylamine and tri-n-octylphosphine oxide-capped Bi2S3nanoparticles at different temperatures. UV/Vis spectra showed a blueshift in the absorbance band edge characteristic of a quantum size effect. High-quality, crystalline, long and short Bi2S3nanorods were obtained depending on the thermolysis temperature, which was varied from 190 to 270 °C. A general trend of increasing particle breadth with increasing reaction temperature and increasing length of the carbon chain of the amine (capping agent) was observed. Powder XRD patterns revealed the orthorhombic crystal structure of Bi2S3.

    Original languageEnglish
    Pages (from-to)13127-13135
    Number of pages9
    JournalChemistry - A European Journal
    Volume22
    Issue number37
    DOIs
    Publication statusPublished - 9 Aug 2016

    Keywords

    • bismuth
    • chain structures
    • nanoparticles
    • S ligands
    • sulfur

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