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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.
Chinese Journal of Chemistry – Wiley
Published: May 1, 2004
Keywords: ; ; ; ; ;
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