Electronic structure of phthalocyanines: Theoretical investigation of the optical properties of phthalocyanine monomers, dimers, and crystals

E. Orti*, Jean-Luc Bredas, C. Clarisse

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

252 Scopus citations

Abstract

We present valence effective Hamiltonian (VEH) calculations on the optical absorptions of a series of phthalocyanine compounds: the metal-free phthalocyanine molecule, a model system for the lithium phthalocyanine molecule, the metal-free phthalocyanine dimer, and model systems for the lutetium diphthalocyanine and the lithium phthalocyanine crystal. For these compounds, it is found that the major factor influencing the evolution of the optical transitions is not the electronic structure of the metal but rather the geometric structure: phthalocyanine intraring geometry and, in the dimers and crystals, interring separation and staggering angle. The origin of the so-called Soret or B absorption band is calculated to be significantly more. complex than was previously thought on the basis of the simple four-orbital model.

Original languageEnglish (US)
Pages (from-to)1228-1235
Number of pages8
JournalThe Journal of chemical physics
Volume92
Issue number2
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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