Abstract
Present investigation demonstrates a very simple seed-mediated route for the synthesis of silver nanorods in aqueous solution. Central to the concept of seed-mediated growth of nanoparticles is that small nanoparticle seeds serve as nucleation centres to grow nanoparticles to a desired size and shape. Hydroxypropyl methyl cellulose (HPMC) has been used as soft template for one-dimensional growth of silver particles. Morphological, structural and spectral changes that are associated with the seed-mediated growth of the nanoparticles in presence of HPMC are characterized using UV–vis and HR-TEM spectroscopic study. Simulation of UV–vis extinction spectra of our synthesized silver nanorods has been carried out using discrete dipole approximation methodology. The broad red-shifted longitudinal extinction band of green-coloured silver sol has been explained, due to the presence of silver nanorods of different aspect ratios.
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Acknowledgement
We gratefully acknowledge the financial support received from UGC, New Delhi for carrying out this research work. P.S and S.P also thanks to CSIR, New Delhi for financial support (while carrying out this research work).
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Sarkar, P., Bhui, D.K., Bar, H. et al. DDA-Based Simulation of UV–vis Extinction Spectra of Ag Nanorods Synthesized Through Seed-Mediated Growth Process. Plasmonics 6, 43–51 (2011). https://doi.org/10.1007/s11468-010-9167-2
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DOI: https://doi.org/10.1007/s11468-010-9167-2