Jump to main content
Jump to site search

Issue 7, 2011
Previous Article Next Article

Role of spacer lengths of gemini surfactants in the synthesis of silver nanorods in micellar media

Author affiliations

Abstract

In this work, we have prepared Ag-nanorods using biscationic gemini surfactant micelles as the media by a seed-mediated wet synthesis method. Towards this end, we first synthesized Ag-nanoseeds of diameter ∼7 nm stabilized by trisodium citrate (as the capping agent). Then these Ag-nanoseeds were used to synthesize Ag-nanorods of different aspect ratios. With decreasing Ag-nanoseed concentration, the aspect ratios of the Ag-nanorods stabilized by these gemini surfactants increased gradually. Various Ag-nanoseeds and Ag-nanospecies were characterized using UV-Vis spectroscopy (to know the surface plasmon bands), transmission electron microscopy (to find out their particle sizes and distribution), energy-dispersive X-ray spectroscopy and X-ray diffraction. When we used micelles derived from gemini surfactants of shorter spacer –(CH2)n– (n = 2 or 4) to stabilize the Ag-nanorods, the λmax of the longitudinal band shifted more towards the blue region compared to that of the gemini surfactant micelles with a longer spacer –(CH2)n– (n = 5, 12) at a given amount of the Ag-nanoseed solution. So, the growth of Ag-nanorods in the gemini micellar solutions depends on the spacer-chain length of gemini surfactants employed.

Graphical abstract: Role of spacer lengths of gemini surfactants in the synthesis of silver nanorods in micellar media

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Feb 2011, accepted on 09 Apr 2011 and first published on 19 May 2011


Article type: Paper
DOI: 10.1039/C1NR10141B
Citation: Nanoscale, 2011,3, 2924-2930

  •   Request permissions

    Role of spacer lengths of gemini surfactants in the synthesis of silver nanorods in micellar media

    S. Bhattacharya and J. Biswas, Nanoscale, 2011, 3, 2924
    DOI: 10.1039/C1NR10141B

Search articles by author

Spotlight

Advertisements