New mixed ligand single-source precursors for PbS nanoparticles and their solvothermal decomposition to anisotropic nano- and microstructures

Trinanjana Mandal, Graham Piburn, Vitalie Stavila, Irene Rusakova, Teyeb Ould-Ely, Adam C. Colson, Kenton H. Whitmire

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Six new precursors for lead sulfide nanoparticles were synthesized by the reaction of lead acetate, with picolinic (Hpic), 2,6-dipicolinic (H 2dipic) 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•2H2O" (1b), "Pb(pic)2(tu)" (2a), [Pb(pic)2(ths) 2]2 (2b), [Pb(dipic)(tu)(H2O)] 2•2H2O (3a), and [Pb(dipic)(ths)2] •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.

Original languageEnglish
Pages (from-to)4158-4169
Number of pages12
JournalChemistry of Materials
Volume23
Issue number18
DOIs
Publication statusPublished - Sep 27 2011
Externally publishedYes

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Thiourea
Thioureas
Nanostructures
Ligands
Nanoparticles
Decomposition
Microstructure
Lead
Salicylic acid
Salicylic Acid
thiosemicarbazide
Single crystals
Crystalline materials
X ray diffraction
Crystals

Keywords

  • dipicolinate
  • Lead sulfide
  • nanoparticle
  • picolinate
  • salicylate
  • semiconductor
  • solvothermal
  • thiosemicarbazide
  • thiourea

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

New mixed ligand single-source precursors for PbS nanoparticles and their solvothermal decomposition to anisotropic nano- and microstructures. / Mandal, Trinanjana; Piburn, Graham; Stavila, Vitalie; Rusakova, Irene; Ould-Ely, Teyeb; Colson, Adam C.; Whitmire, Kenton H.

In: Chemistry of Materials, Vol. 23, No. 18, 27.09.2011, p. 4158-4169.

Research output: Contribution to journalArticle

Mandal, Trinanjana ; Piburn, Graham ; Stavila, Vitalie ; Rusakova, Irene ; Ould-Ely, Teyeb ; Colson, Adam C. ; Whitmire, Kenton H. / New mixed ligand single-source precursors for PbS nanoparticles and their solvothermal decomposition to anisotropic nano- and microstructures. In: Chemistry of Materials. 2011 ; Vol. 23, No. 18. pp. 4158-4169.
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