Lamellar multilayer hexadecylaniline-modified gold nanoparticle films deposited by the Langmuir-Blodgett technique

Anita Swami, Ashavani Kumar, Murali Sastry

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Organization of hexadecylaniline (HDA)-modified colloidal gold particles at the air-water interface and the formation thereafter of lamellar, multilayer films of gold nanoparticles by the Langmuir-Blodgett technique is described in this paper. Formation of HDA-capped gold nanoparticles is accomplished by a simple biphasic mixture experiment wherein the molecule hexadecylaniline present in the organic phase leads to electrostatic complexation and reduction of aqueous chloroaurate ions, capping of the gold nanoparticles thus formed and phase transfer of the now hydrophobic particles into the organic phase. Organization of gold nanoparticles at the air-water interface is followed by surface pressure-area isotherm measurements while the formation of multilayer films of the nanoparticles by the Langmuir-Blodgett technique is monitored by quartz crystal microgravimetry, UV- Vis spectroscopy, Fourier transform infrared spectroscopy and transmission electron microscopy.

Original languageEnglish
Pages (from-to)185-193
Number of pages9
JournalProceedings of the Indian Academy of Sciences: Chemical Sciences
Issue number3
Publication statusPublished - Jun 2003
Externally publishedYes


  • Hexadecylaniline-modified gold nanoparticle films
  • Lamellar multilayer films
  • Langmuir-Blodgett technique

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