The cadmium selenide quantum dots (QD) have been synthesized by template-control in an emulsion liquid membrane system. The system consisted of kerosene as solvent, L152 (dialkylene succinimide) as surfactant, N7301 (trialiphatic amine, Ra, R=C₈-C₁₀) as carrier, 0.1 mol/L CdCl₂ solution as internal-aqueous phase and H₂Se gas as external phase. Additive organic template agent in internal-aqueous phase was necessary to fom CdSe QD. The influence of the nature of template and its concentration on sizes of the formed CdSe QD has also been studied. Transmission electron microscopy showed that the sizes of the products could be controlled down to 3-4 nm. X-ray diffraction analysis revealed that the crystals had cubic structure. The formation process and the optical properties of CdSe QD have also been presented.

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Volume22, Issue5

May 2004

Pages 441-444

Biomimetic synthesis of CdSe quantum dots through emulsion liquid membrane system of gas-liquid transport

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Biomimetic synthesis of CdSe quantum dots through emulsion liquid membrane system of gas-liquid transport

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