Dendron-like growth of silver nanoparticles using a water-soluble oligopeptide

Santanu Bhattacharya, Apurba K. Das, Arindam Banerjee, Dipankar Chakravorty

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


A dendron-like nanostructure of silver was grown in solution using a water-soluble tetrapeptide Tyr-Aib-Tyr-Val (Aib, α-amino isobutyric acid), silver nitrate, and methanol. These structures are composed of silver nanoparticles having a bimodal size distribution with the median diameters around 2.0 and 19.5 nm, respectively. The dendron-like growth is ascribed to the effect of the local electric field generated by the dipoles associated with the peptide molecules. The optical absorption spectra have been analyzed by Mie scattering theory, which shows that there is a metal-nonmetal transition in silver particles having diameters less than ∼2.0 nm.

Original languageEnglish (US)
Pages (from-to)10757-10761
Number of pages5
JournalJournal of Physical Chemistry B
Issue number22
StatePublished - Jun 8 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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