Preparation of luminescent polyelectrolyte/Cu-doped ZnSe nanoparticle multilayer composite films

被引：77

作者：

Hao, EC

Zhang, H

Yang, B

Ren, H

Shen, JC

机构：

[1] Jilin Univ, Dept Chem, Changchun 130023, Peoples R China

[2] Jilin Univ, Key Lab Supramol Struct & Spect, Changchun 130023, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2001年 / 238卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ZnSe nanoparticles; Cu+ doping; surface passivation; luminescent; layer-by-layer assembly;

D O I：

10.1006/jcis.2001.7472

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

ZnSe and Cu-doped ZnSe nanoparticle aqueous suspensions were prepared in the presence of mercaptopropionic acid (MPA). Cu-doped ZnSe nanoparticles exhibited a strong blue emission that was strongly dependent upon the Cu dopant level and the chemical surface passivation produced by zinc-mercaptopropionic acid complexes. These Cu-doped ZnSe nanoparticles were further assembled into ultrathin polymer-supported films using electrostatic interactions and the layer-by-layer assembly method. UV-visible spectroscopy and X-ray photoelectron spectroscopy (XPS) provided evidence for the presence and optical activity of Cu-doped ZnSe nanoparticles within the polymer ultrathin films. Moreover, XPS data supported the presence of zinc mercaptopropionic acid complexes on nanoparticle surfaces and the presence of Cu+ ions with high luminescent activity in the doped nanoparticles. (C) 2001 Academic Press.

引用

页码：285 / 290

页数：6

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