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

• 来源期刊: 同步辐射装置用户科技论文集
• 学科: 化学
• 关键词: PBS 纳米颗粒 表面化学处理 非线性光学特性
• 年，卷（期）: 1999,（1）
• 页码范围: 179-182
• 页数: 4页
• 分类号: O614.433

摘要

The transient optical properties of novel PbS nanoparticles coated with 2.6-O-diallyl-β-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 ultrsafast-induced absorption for novel PbS nanoparticles.