Surface morphology and optical properties of porphyrin/Au and Au/porphyrin/Au systems

Yevgeniya Kalachyova, Oleksiy Lyutakov, Andrey Solovyev, Petr Slepička, Vaclav Švorčík

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Porphyrin/Au and Au/porphyrin/Au systems were prepared by vacuum evaporation and vacuum sputtering onto glass substrate. The surface morphology of as-prepared systems and those subjected to annealing at 160°C was studied by optical microscopy, atomic force microscopy, and scanning electron microscopy techniques. Absorption and luminescence spectra of as-prepared and annealed samples were measured. Annealing leads to disintegration of the initially continuous gold layer and formation of gold nanoclusters. An amplification of Soret band magnitude was observed on the Au/meso-tetraphenyl porphyrin (TPP) system in comparison with mere TPP. Additional enhancement of luminescence was observed after the sample annealing. In the case of sandwich Au/porphyrin/Au structure, suppression of one of the two porphyrins' luminescence maxima and sufficient enhancement of the second one were observed.

Original languageEnglish
Pages (from-to)1-23
Number of pages23
JournalNanoscale Research Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Dec 2013
Externally publishedYes

Keywords

  • Enhancement
  • Gold
  • Luminescence
  • Nanostructures
  • Porphyrin
  • Surface morphology

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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