title: The bipyridine adducts of N-phenyldithiocarbamato complexes of Zn(II) and Cd(II); synthesis, spectral, thermal decomposition studies and use as precursors for ZnS and CdS nanoparticles.
abstract: Bipyridine adducts of N-phenyldithiocarbamato complexes, [ML(1)2L(2)] (M=Cd(II), Zn(II); L(1)=N-phenyldithiocarbamate, L(2)=2,2' bipyridine), have been synthesized and characterised. The decomposition of these complexes to metal sulphides has been investigated by thermogravimetric analysis (TGA). The complexes were used as single-source precursors to synthesize MS (M=Zn, Cd) nanoparticles (NPs) passivated by hexadecyl amine (HDA). The growth of the nanoparticles was carried out at two different temperatures: 180 and 220 °C, and the optical and structural properties of the nanoparticles were studied using UV-Vis spectroscopy, photoluminescence spectroscopy (PL), transmission emission microscopy (TEM) and powdered X-ray diffraction (p-XRD). Nanoparticles, whose average diameters are 2.90 and 3.54 nm for ZnS, and 8.96 and 9.76 nm for CdS grown at 180 and 220 °C respectively, were obtained.
authors.affiliation: Chemical Resource Beneficiation (CRB) Research Focus Area, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa. Electronic address: dcconwudiwe@gmail.com.
authors.forename: Damian C
authors.initials: DC
authors.lastname: Onwudiwe
authors.affiliation: Chemical Resource Beneficiation (CRB) Research Focus Area, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa.
authors.forename: Christien A
authors.initials: CA
authors.lastname: Strydom
mesh_terms: D015082:2,2'-Dipyridyl / Q000138:chemical synthesis* / Q000737:chemistry; D000588:Amines / Q000737:chemistry; D002104:Cadmium / Q000737:chemistry*; D019187:Cadmium Compounds / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry; D006838:Hydrocarbons / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D055620:Optical Phenomena; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013440:Sulfides / Q000737:chemistry*; D013696:Temperature; D013818:Thermogravimetry; D013859:Thiocarbamates / Q000138:chemical synthesis* / Q000737:chemistry; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry*; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D000588:Amines; D019187:Cadmium Compounds; D056831:Coordination Complexes; D006838:Hydrocarbons; D013440:Sulfides; D013859:Thiocarbamates; D017967:Zinc Compounds; D002104:Cadmium; C034939:cadmium sulfide; D015082:2,2'-Dipyridyl; D015032:Zinc; C031238:zinc sulfide; C013553:hexadecylamine
keywords: CdS; Dithiocarbamate; Morphology; Nanoparticles; Optical properties; ZnS