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Developing a coordination chemistry of intact quantum dots: the preparation of ...

Trindade, Tito; O'Brien, Paul; Zhang, Xiao-mei

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Synthesis of PbS nanocrystallites using a novel single molecule precursors appr...

Trindade, Tito; O' Brien, Paul; Zhang, Xiao-mei; Motevallii, Majid

The synthesis and characterisation of some lead(II) dithiocarbamato complexes Pb(S2CNRR¾)2 is reported. These compounds were used as single molecule precursors to produce nanocrystalline PbS by their thermolysis in trioctylphosphine oxide. The optical and morphological properties of the resulting PbS nanocrystallites were investigated; the influence of experimental parameters, such as precursor, growth time and...


Synthesis of CdS and CdSe nanocrystallites using a novel single-molecule precur...

Trindade, Tito; O'Brien, Paul; Zhang, Xiao-mei

The synthesis of CdS and CdSe nanocrystallites using the thermolysis of several dithioor diselenocarbamato complexes of cadmium in trioctylphosphine oxide (TOPO) is reported. The nanodispersed materials obtained show quantum size effects in their optical spectra and exhibit near band-edge luminescence. The influence of experimental parameters on the properties of the nanocrystallites is discussed. HRTEM images ...


Synthesis of CdS and CdSe nanoparticles by thermolysis of diethyldithio- or die...

Trindade, Tito; O'Brien, Paul

Cadmium sulfide and cadmium selenide nanoparticles have been synthesised by a novel route involving the thermal decomposition of the bisdiethyldithio- or bisdiethyldiseleno-carbamates of cadmium in refluxing 4-ethylpyridine solutions. The nanodispersed materials were studied by electronic spectroscopy and bandgaps were blue shifted. Transmission electron microscopy of the samples showed material to be in the na...


Preparation of zinc-oxide and zinc-sulfide powders by controlled precipitation ...

Trindade, Tito; Jesus, Júlio D. Pedrosa de; O'Brien, Paul

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Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia