Effect of central metals on Langmuir-Blodgett monolayers of phthalocyanines with flexible substituents

Shungo Kojima, Tomoteru Fukumura, Tetsuya Hasegawa

Research output: Contribution to journalArticlepeer-review

Abstract

Langmuir-Blodgett (LB) monolayers of octaoctyloxy metallophthalocyanines (MOOPc, M = Cu, Zn) and copper tetra(tert-butyl) phthalocyanine were deposited on glass substrates. MOOPcs showed gradual increase in their surface pressure-area isotherms reflecting their flexible substituents. In spite of the similar molecular structure, Cu and ZnOOPc indicated different isotherms at lower pressure, manifested by the surface morphology. At high surface pressure, ZnOOPc monolayer became denser than CuOOPc monolayer, as was estimated by the optical absorption. These results represents that the central metals have a crucial effect on structures of LB monolayers.

Original languageEnglish
Pages (from-to)155-158
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Volume13
DOIs
Publication statusPublished - 2015
Externally publishedYes

Keywords

  • Atomic force microscopy
  • Langmuir-Blodgett films
  • Monolayer
  • Visible/ultraviolet absorption spectroscopy
  • X-ray reflection

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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