Electrochemistry-controlled metal ion release from silicone elastomer nanocomposites through combination of different metal nanoparticles

被引：29

作者：

Hahn, Anne ^{[1
]}

Guenther, Sebastian ^{[1
]}

Wagener, Philipp ^{[1
]}

Barcikowski, Stephan ^{[1
]}

机构：

[1] Laser Zentrum Hannover eV, D-30419 Hannover, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 28期

关键词：

LASER-ABLATION; SILVER; DRUG; SYSTEMS;

D O I：

10.1039/c0jm04480f

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：

Electrochemistry-controlled metal ion release is achieved using nanoparticle mixtures embedded into a silicone matrix. Synergistic metal ion release from silicone matrix filled with silver and copper nanoparticles as well as silver and gold nanoparticles embedded into silicone is investigated in terms of qualitative and quantitative influences. Results are compared to nanoparticle composites with only one metal. The mechanism enhancing the release of the less noble metal nanoparticle is based on the ion-mediated electrochemistry rather than on contact corrosion of both elements. A retardation as well as an enhancement of metal ion release is observed allowing a time- and rate-controlled design of bioactive nanocomposites.

引用

页码：10287 / 10289

页数：3

共 24 条

[21] Polymeric systems for controlled drug release [J].