pH-responsive luminescent properties of Ag@PPy nanoparticles

被引：7

作者：

Ye, Sunjie ^{[1
]}

Chen, Shujun ^{[1
]}

Wang, Hongjuan ^{[1
]}

Lu, Yun ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Dept Polymer Sci & Engn, Nanjing 210093, Peoples R China

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

METALLIC POLYMERS; 4TH GENERATION;

D O I：

10.1039/c0cp02184a

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：

We measure the emission spectra and quantum yields of Ag@PPy nanoparticles with different volume ratios of Ag core and PPy shell, and ascribe the emission peaks around 460 and 520 nm, respectively, to the S-1 -> S-0 transition of the PPy molecule, and to the charge transfer between Ag and PPy, as well as the Ag plasmon. The two peaks shift with the changed doping level of the PPy shell, which can be elucidated by consideration of the energy levels of Ag and PPy. According to these results, we investigate the fast and reversible pH-sensing function of Ag@PPy nanoparticles on the basis of the doping effect on the interaction between the Ag core and the PPy shell.

引用

页码：4668 / 4673

页数：6

共 23 条

[11] Optimization of the molecular orbital energies of conjugated polymers for optical amplification of fluorescent sensors [J].