Metal phthalocyanine showing four-peak Q-band similar to metal-free phthalocyanines: Nickel 1,4-di(trifluorosulfonyl)-phthalocyanine

Katunori Nakai, Jyo Usami, Nagao Kobayashi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Nickel phthalocyanines (NiPc) substituted by trifluorosulfonyl or trimethylsilylethynyl groups have been prepared and characterized using NMR and electronic absorption spectroscopy. In particular, when trifluorosulfonyl groups are introduced to two, so-called, α-benzo positions of one benzene ring of the Pc skeleton, the Q-band splits similarly to the Q-bands of metal-free phthalocyanines. The splitting width of the Q-bands can be interpreted as due mainly to splitting of the LUMOs by the substituents, although splitting between the HOMO-1 and HOMO-2 is also effective to a lesser extent.

Original languageEnglish
Pages (from-to)222-227
Number of pages6
JournalJournal of Porphyrins and Phthalocyanines
Volume11
Issue number3-4
Publication statusPublished - 2007 Jan 1

Keywords

  • Absorption spectra
  • Degeneracy
  • Metal phthalocyanine
  • Splitting
  • Substituent effect

ASJC Scopus subject areas

  • Chemistry(all)

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