Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 372, Issue 1-3, Pages 177-181Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2010.10.012
Keywords
Gold; Nanorods; Thermal stability; Ostwald ripening
Categories
Funding
- Natural Science Foundation of China [20801019]
- SCUT [2009ZM0233]
- New Century Excellent Talents in University [NCET-10-0369]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics
Ask authors/readers for more resources
The thermal stability of the gold nanorods in an aqueous solution was investigated by UV-vis absorption spectroscopy and TEM technique. It was found that the longitudinal surface plasmon resonance absorption of the gold nanorods gradually moved to a shorter wavelength at high temperature, suggesting the decrease of the aspect ratio. The decrease of the aspect ratio could be attributed to the increase of the diameter and the decrease of the length, which was associated with Ostwald ripening in the solution. This shape deformation could be inhibited by reducing the concentration of cetyltrimethylammonium bromide or coating the surface of gold nanorods with poly(sodium styrenesulfonate). The results are very important to the future applications of the gold nanorods where they have to be heated to high temperature without change of their optical properties. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available