One-step synthesis of ordered two-dimensional assemblies of silver nanoparticles by the spontaneous reduction of silver ions by pentadecylphenol langmuir monolayers

Anita Swami, P. R. Selvakannan, Renu Pasricha, Murali Sastry

Research output: Contribution to journalArticle

Abstract

The single-step synthesis of silver nanoparticles by the reduction of silver ions present in the subphase under alkaline conditions by 3-pentadecylphenol (3-PDP) Langmuir monolayer and their assembly into ordered two-dimensional structures is described. The reduction of the silver ions occurs by electron transfer from ionized phenol groups of 3-PDP, which then stabilize the particles against aggregation. Similar reduction of aqueous silver ions was carried out at the interface with toluene bearing 3-PDP and yielded monodisperse silver nanoparticles that may be separated as a dry powder and redispersed in a range of organic solvents. The mechanism of reduction of silver ions by 3-PDP under alkaline conditions was studied by UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) spectroscopy, transmission electron microscopy (TEM), and chemical analysis by X-ray photoelectron spectroscopy (XPS), and is discussed in detail.

Original languageEnglish (US)
Pages (from-to)19269-19275
Number of pages7
JournalJournal of Physical Chemistry B
Volume108
Issue number50
DOIs
StatePublished - Dec 16 2004

Fingerprint

monomolecular films
Silver
assemblies
Monolayers
silver
Ions
Nanoparticles
nanoparticles
synthesis
ions
Bearings (structural)
magnetic resonance spectroscopy
Toluene
Phenol
chemical analysis
Powders
phenols
Organic solvents
Nuclear magnetic resonance spectroscopy
Phenols

ASJC Scopus subject areas

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

Cite this

One-step synthesis of ordered two-dimensional assemblies of silver nanoparticles by the spontaneous reduction of silver ions by pentadecylphenol langmuir monolayers. / Swami, Anita; Selvakannan, P. R.; Pasricha, Renu; Sastry, Murali.

In: Journal of Physical Chemistry B, Vol. 108, No. 50, 16.12.2004, p. 19269-19275.

Research output: Contribution to journalArticle

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