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Article
New Mixed Ligand Single-Source Precursors for PbS Nanoparticles and Their Solvothermal Decomposition to Anisotropic Nano- and Microstructures
Chemistry of Materials (2011)
  • Adam C. Colson, Rice University
  • Trinanjana Mandal, Rice University
  • Graham Piburn, Rice University
  • Vitalie Stavila, Rice University
  • Irene Rusakova, University of Houston
  • Teyeb Ould-Ely, Rice University
  • Kenton H. Whitmire, Rice University
Abstract
Six new precursors for lead sulfide nanoparticles were synthesized by the reaction of lead acetate, with picolinic (Hpic), 2,6-dipicolinic (H2dipic) or salicylic (H2sal) acid followed by the addition of thiourea (tu) or thiosemicarbazide (ths). The compounds are “[Pb(Hsal)2(tu)2]” (1a), “Pb(Hsal)2- (ths)3 3 2H2O”(1b),“Pb(pic)2(tu)”(2a), [Pb(pic)2(ths)2]2 (2b), [Pb(dipic)(tu)(H2O)]2 3 2H2O (3a), and [Pb(dipic)(ths)2]3 2H2O (3b). Compounds 2b, 3a, and 3b formed well-defined crystals and were characterized by single-crystal X-ray diffraction, while the remaining compounds were characterized spectroscopically and by elemental analyses. The precursors were decomposed in both aqueous and nonaqueous media leading to pure crystalline galena in all cases. Depending upon conditions truncated octahedra, dendrites, nanocubes, interlinked nanocubes, nanohexapods and cubes were obtained. To elucidate the effect of single-source precursors on the mechanism of growth of nanoparticles, we compared the decomposition results with PbS nanostructures synthesized from multiple-source precursors using lead acetate with thiourea or thiosemicarbazide.
Keywords
  • lead sulfide,
  • nanoparticle,
  • semiconductor,
  • solvothermal,
  • picolinate,
  • dipicolinate
Disciplines
Publication Date
September 27, 2011
DOI
10.1021/cm201064c
Citation Information
Adam C. Colson, Trinanjana Mandal, Graham Piburn, Vitalie Stavila, et al.. "New Mixed Ligand Single-Source Precursors for PbS Nanoparticles and Their Solvothermal Decomposition to Anisotropic Nano- and Microstructures" Chemistry of Materials Vol. 23 Iss. 18 (2011) p. 4158 - 4169
Available at: http://works.bepress.com/adam-colson/4/