Thermal Reshaping of Gold Nanorods in Micellar Solution of Water/Glycerol Mixtures | Zendy

Al Sayed A. M. Al-Sherbini | Zendy

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Thermal Reshaping of Gold Nanorods in Micellar Solution of Water/Glycerol Mixtures

Author(s) -

Al Sayed A. M. Al-Sherbini

Publication year - 2010

Publication title -

journal of nanomaterials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.463

H-Index - 66

eISSN - 1687-4129

pISSN - 1687-4110

DOI - 10.1155/2010/569462

Subject(s) - nanorod , materials science , glycerol , dielectric , surface plasmon resonance , aqueous solution , micelle , chemical engineering , absorption (acoustics) , analytical chemistry (journal) , nanoparticle , nanotechnology , composite material , organic chemistry , chemistry , optoelectronics , engineering

Gold nanorods (Nds) with aspect ratios of 4, 3.5, and 2.8 were prepared by the electrochemical method. The nanorods were thermally studied in binary solvents of aqueous glycerol at different ratios (25%–75%). The results illustrated that the longitudinal surface plasmon resonance (SPL) is strongly dependent on the dielectric constant. The maximum absorption is red shifted with increasing the glycerol/water ratio. This was attributed to the decreasing value of the dielectric constant of the binary solvents. Moreover, by increasing the temperatures, the results showed relative instability of the gold nanorods. This attributed to the relative instability of the micelle capping the nanorods

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