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Phosphine-free synthesis of Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell structures with bright and stable blue-green photoluminescence
Shen, Huaibin1,2; Zhou, Changhua2; Xu, ShaSha2; Yu, Cailan3; Wang, Hongzhe2; Chen, Xia1; Li, Lin Song2
2011
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume21Issue:16Pages:6046-6053
AbstractHighly photoluminescent (PL) Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell nanocrystals were successfully synthesized by a phosphine-free method. Alloyed ZnSexS1-x was chosen as the shell material to epitaxially grow on pre-synthesized Zn1-xCdxSe nanocrystals. By decreasing the molar ratio between Se and S in ZnSexS1-x, the shell composition gradually changed from ZnSe to ZnS. The PL emissions of these core/multishell nanocrystals can be tuned from 450 to 530 nm. The PL quantum yields (QYs) of as-synthesized nanocrystals reached 50 to 75% with full width at half maximum (FWHM) between 28 and 45 nm. By an organic-aqueous phase transfer method, such core/multishell nanocrystals can be transferred into water successfully using an amphiphilic oligomer (polymaleic acid n-hexadecanol ester) as a surface coating agent. It was found that the shell thicknesses of the assynthesized core/multishell nanocrystals dramatically affected the phase transfer efficiency. Stability tests showed that the water-soluble Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell nanocrystals with 10 monolayers of shells had very high PL QY and stability in various physiological conditions.
DOI10.1039/c0jm03605f
Indexed BySCI
Language英语
WOS IDWOS:000289260000033
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71360
Collection中国科学院化学研究所
Corresponding AuthorChen, Xia
Affiliation1.Jilin Univ, Coll Life Sci, Changchun 130021, Peoples R China
2.Henan Univ, Minist Educ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China
3.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Shen, Huaibin,Zhou, Changhua,Xu, ShaSha,et al. Phosphine-free synthesis of Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell structures with bright and stable blue-green photoluminescence[J]. JOURNAL OF MATERIALS CHEMISTRY,2011,21(16):6046-6053.
APA Shen, Huaibin.,Zhou, Changhua.,Xu, ShaSha.,Yu, Cailan.,Wang, Hongzhe.,...&Li, Lin Song.(2011).Phosphine-free synthesis of Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell structures with bright and stable blue-green photoluminescence.JOURNAL OF MATERIALS CHEMISTRY,21(16),6046-6053.
MLA Shen, Huaibin,et al."Phosphine-free synthesis of Zn1-xCdxSe/ZnSe/ZnSexS1-x/ZnS core/multishell structures with bright and stable blue-green photoluminescence".JOURNAL OF MATERIALS CHEMISTRY 21.16(2011):6046-6053.
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