title: High-temperature seedless synthesis of gold nanorods.
abstract: We demonstrate seedless synthesis of gold nanorods at high temperatures up to 97 degrees C. Using the correct silver nitrate concentration is crucial for formation of rod-shaped particles at all temperatures. We observed a decrease of nanorod length with increasing temperature, while the width stays constant throughout the temperature range. From kinetics studies, we show 3 orders of magnitude increase in nanorod growth rate when the temperature is raised from room temperature to 97 degrees C. From the temperature dependence of the growth rate, we obtain a average activation energy for growth on all facets of 90 +/- 10 kJ mol(-1). High-temperature synthesis of gold nanorods presents a more attractive method for scalable flow-based production of gold nanorods.
authors.affiliation: Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, P.O. Box 218, Hawthorn, 3122 VIC, Australia. PZijlstra@swin.edu.au
authors.forename: Peter
authors.initials: P
authors.lastname: Zijlstra
authors.forename: Craig
authors.initials: C
authors.lastname: Bullen
authors.forename: James W M
authors.initials: JW
authors.lastname: Chon
authors.forename: Min
authors.initials: M
authors.lastname: Gu