Ag/PVP/PAN nanocomposites with triangular nanoprisms of silver synthesized by UV-induced polymerization: Morphology manipulation and optical properties tuning

被引：9

作者：

Kudryashov, Mikhail ^{[1
]}

Logunov, Alexander ^{[2
]}

Gogova, Daniela ^{[3
]}

Mashin, Aleksandr ^{[1
]}

De Filpo, Giovanni ^{[4
]}

机构：

[1] Lobachevsky Univ, Nizhnii Novgorod, Russia

[2] Nizhnii Novgorod State Tech Univ, Nizhnii Novgorod, Russia

[3] Univ Oslo, Ctr Mat Sci & Nanotechnol, Oslo, Norway

[4] Univ Calabria, Arcavacata Di Rende, Italy

来源：

OPTICAL MATERIALS | 2020年 / 101卷

关键词：

Triangular silver nanoprisms; Ag/PVP/PAN nanocomposites; Surface plasmon resonance; Silver nanoparticles; NANOPARTICLES; SIZE; NANOCUBES; NANOSPHERES; REDUCTION; PARTICLES; NANOWIRES; COMPOSITE; NANODISKS; SPECTRA;

D O I：

10.1016/j.optmat.2020.109746

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid nanocomposite films of "silver/polyvinylpyrrolidone/polyacrylonitrile" were synthesized for the first time by means of UV-induced polymerization. Structural characterization carried out by transmission electron microscopy revealed the presence of triangular silver nanoprisms with an edge length of similar to 40 nm and a thickness of similar to 15 nm in addition to spherical nanoparticles. The nanoparticles shape evolution process during synthesis and storage has been monitored in detail by UV-VIS-NIR spectroscopy and plasma resonance bands depending on the shape of the silver nanoparticles have been identified. Unlike spherical nanoparticles, which absorb light at 420-450 nm, the triangular nanoprisms demonstrate a clear absorption in the red range of the spectrum. The optical spectra of the composite films with incorporated silver nanoprisms manifest an intense in-plane dipole plasmon resonance band at 585-650 nm, as well as a weak out-of-plane quadrupole resonance band at 340 nm.

引用

页数：6

共 51 条

[1] Absorber materials based on polymer nanocomposites containing silver nanoparticles for solar thermal collectors [J].