A study of the structural features and sensor properties of zinc 2,9,16,23-tetra-tert-butylphthalocyanine films

A. S. Sukhikh, M. S. Polyakov, D. D. Klyamer, S. A. Gromilov, T. V. Basova

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A comparative study of the structural features of zinc 2,9,16,23-tetra-tert-butylphthalocyanine films (ZnPc(tBu)4) obtained by vacuum thermal deposition and spin coating techniques is performed. By powder X-ray diffraction, 2D GIXD, and optical absorption spectroscopy it is shown that ZnPc(tBu)4 films obtained by the spin coating technique consist of a disordered α-phase with small crystallites. After annealing at 200 °C for 3 h the films transform into the β-phase, with crystallite sizes increasing, however, they remain disordered relative to the substrate surface. On heating under the same conditions, the ZnPc(tBu)4 films obtained by thermal vacuum sublimation transform from the weakly oriented low-temperature α-phase into the oriented β-phase. Dependences of a chemiresistive sensor response of the ZnPc(tBu)4 films to ammonia (10-50 ppm) are investigated depending on the preparation and annealing methods of the films.

Original languageEnglish
Pages (from-to)1039-1047
Number of pages9
JournalJournal of Structural Chemistry
Volume58
Issue number5
DOIs
Publication statusPublished - 1 Sep 2017
Externally publishedYes

Keywords

  • chemical sensors
  • metal phthalocyanine
  • molecular films
  • powder XRD
  • PHTHALOCYANINE THIN-FILMS
  • COBALT PHTHALOCYANINE
  • chemical sensors.
  • LANGMUIR-BLODGETT-FILMS
  • LAYERS
  • MAGNESIUM PHTHALOCYANINE
  • GROWTH
  • X-RAY
  • COPPER PHTHALOCYANINE
  • ASSOCIATION

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