Naslov
Kinetic Simulation of Gold Nanorod Growth in Solution Based on Optical Spectra

Autori
Wang, Yingying ; Li, Boxuan ; Vdović, Silvije ; Wang, Xuefei ; Xia, Andong ;

Izvornik
CHINESE JOURNAL OF CHEMICAL PHYSICS (1674-0068) 25 (2012); 135-141

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
seed-mediated growth; nanoparticles; absorption

Sažetak
By monitoring the time evolution of the optical absorption spectrum corresponding to dynamic information of aspect ratio (AR) and volume, we succeeded in following the growth kinetics of gold nanorods. The results indicate that the rods growth consists of two stages: seeds develop into rods with a fast AR increase and the rods grow big with constant AR. Here, a charge transfer model, involving positive charge transfer from Au(I) to seed and neutralization by electron from ascorbic acid, has been introduced to explain the autocatalysis mechanism of rod growth. The good agreement between the numerical simulation based on this moldel and experimental results supports the proposed mechanism.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA