Synthesis and characterization of II-VI (CdSe) quantum dot encapsulated liposomes

被引:8
|
作者
Douda, J. [1 ,5 ]
Miranda Calderon, L. G. [1 ]
Kryshtab, T. [2 ]
Arias Ceron, J. S. [3 ]
Kryvko, A. [4 ]
机构
[1] Inst Politecn Nacl, UPIITA, Othon de Mendizabal S-N, Mexico City 07320, DF, Mexico
[2] Inst Politecn Nacl, ESFM, Dept Fis, UPALM, Ave IPN S-N,Edif 9, Mexico City 07738, DF, Mexico
[3] IPN, CINVESTAV, Solid State Elect Sect, Dept Elect Engn, Ave Inst Politecn Nacl 2508, Mexico City 07360, DF, Mexico
[4] Inst Politecn Nacl, ESIME Zacatenco, Dept Sistemas, UPALM, Ave IPN S-N,Edif Z-4, Mexico City 07738, DF, Mexico
[5] Inst Politecn Nacl, UPIITA, Mexico City 07340, DF, Mexico
关键词
NANOCRYSTALS; CDTE;
D O I
10.1007/s10854-018-9133-x
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The semiconductor CdSe quantum dots (QDs) with emission spectra of different wavelengths were synthetized by using a modified method of simultaneous injection at heating. The obtained QDs were encapsulated into liposomes prepared by a method of lipid film hydration and sonication from various phospholipid compositions and polyethylene glycol (PEG) addition. The synthesized and encapsulated in the liposomes QDs were characterized by photoluminescence (PL), X-Ray diffraction (XRD), Transmission electron microscopy, and Dynamic light scattering. The evaluation of PL spectra of the obtained QDs showed that they had sizes in the range of 2.3-4.5 nm. XRD patterns revealed only one peak for CdSe cubic crystal structure and the estimated crystal sizes were about the same values that the obtained from PL results. After the encapsulation a blue shift of PL peak position was observed. The mechanism of the effect is discussed.
引用
收藏
页码:15570 / 15578
页数:9
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