Effect of dispersion of gold nanoparticles on the properties and alignment of liquid crystalline copper phthalocyanine films

Tamara V. Basova, Roman G. Parkhomenko, Maxim Polyakov, Ayşe Gül Gürek, Devrim Atilla, Fatma Yuksel, Elena I. Ryabchikova, Burak Y. Kadem, Aseel K. Hassan

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The inclusion of hexadecylamine capped gold nanoparticles (AuNPs) into the ordered matrix of hexagonal columnar mesophase of copper phthalocyanine (CuPc) has been investigated. The effects of AuNPs on the liquid crystalline behaviour, optical and electrical properties of CuPc films is investigated by different physical methods. The molecules orientation in the films of CuPc and its composites with AuNPs, deposited on the surface of one substrate and between two electrodes, is studied by polarized Raman spectroscopy and polarized microscopy. It has been shown that thin films of the composites confined between ITO and Al electrodes are characterized by homeotropic alignment while no homeotropic alignment was observed in films deposited on ITO substrate with air constituting the upper interface. The I(V) dependences for the films confined between ITO and Al electrodes were measured. Appreciable enhancement of the DC conductivity is observed in the case of composites containing gold nanoparticles.

Original languageEnglish
Pages (from-to)266-273
Number of pages8
JournalDyes and Pigments
Volume125
DOIs
Publication statusPublished - 1 Feb 2016

Keywords

  • Composite materials
  • Films alignment
  • Gold nanoparticles
  • Liquid crystals
  • Metal phthalocyanines
  • Plasmon resonance

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