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Biomimetic synthesis of CdSe quantum dots through emulsion liquid membrane system of gas‐liquid transport
Author(s) -
Liu Lu,
Wu QingSheng,
Ding YaPing,
Liu HuaJie,
Zhang BaoQuan
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040220510
Subject(s) - chemistry , cadmium selenide , quantum dot , transmission electron microscopy , aqueous solution , pulmonary surfactant , succinimide , emulsion , membrane , phase (matter) , solvent , chemical engineering , selected area diffraction , colloid , aqueous two phase system , amine gas treating , nanotechnology , organic chemistry , engineering , biochemistry , materials science
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=C 8 ‐C 10 ) as carrier, 0.1 mol/L CdCl 2 solution as internal‐aqueous phase and H 2 Se 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.