Transient optical properties of novel PbS nanoparticles coated with 2,6-O-diallyl-β-CD

被引：17

作者：

Guo, L

Ibrahim, K

Liu, FQ

Ai, XC

Li, QS

Zhu, HS

Zou, YH

机构：

[1] Beijing Univ Aeronaut & Astronaut, Dept Mat & Sci, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Synchrotron Radiat Facil, Beijing 100039, Peoples R China

[3] Beijing Inst Technol, Res Ctr Mat Sci, Beijing 100081, Peoples R China

[4] Peking Univ, Dept Phys, State Key Mesoscop Phys Lab, MPL, Beijing 100871, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 1999年 / 82卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PbS nanoparticles; 2,6-O-diallyl-beta-CD; surface chemical modification; ultransient-induced absorption;

D O I：

10.1016/S0022-2313(99)00039-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The transient optical properties of novel PbS nanoparticles coated with 2,6-O-diallyl-beta-cyclodextrines (CDs) were studied by the femtosecond pump-probe technique. The results show that the ultrafast transient-induced absorption for the novel case. Compared to the PbS nanoparticles stabilized with polyvinyl alcohol (PVA), we find that the process for the novel case is different from the PbS(PVA). We suggest that the CDs surface modification can trap holes on the surface of PbS nanoparticles. This can induce an efficient charge separation between the PbS nanoparticles and its surface and result in an ultrafast-induced absorption for novel PbS nanoparticles. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：111 / 114

页数：4

共 24 条

[1] Femtosecond investigation of charge carrier dynamics in CdSe nanocluster films [J].