Synthesis of polyphenylene dendrimeric tetrapyrazinoporphyrazines

Chun Keun Jang, Jae Yun Jaung

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Abstract

In this study, new tetrapyrazinoporphyrazine derivatives containing both flexible (linear) and more rigid (dendritic) groups were synthesized. The absorption spectra of Mg-porphyrazines 5a and 5b showed that the splitted Q band at 653 and 736 nm caused the coupling of the transition moment between a pair (or more) of chromophores. The absorption spectra of metal-free porphyrazines 6 exhibited a well-resolved splitting of the Qx/Qy band in the 651-679 nm region and a broad B band in the 377 nm region. Synthesized tetrapyrazinoporphyrazine metal and metal-free complexes were characterized by UV-visible spectroscopy, MALDI-TOF-Ms (matrix-assisted laser desorption ionization time-of-flight mass) spectroscopy and 1H NMR spectroscopy.

Original languageEnglish
Pages (from-to)3209-3212
Number of pages4
JournalMaterials Letters
Volume62
Issue number17-18
DOIs
Publication statusPublished - 2008 Jun 30

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Keywords

  • Aggregation
  • Photochemical technology
  • Polyphenylene
  • Porphyrazine
  • Sensors
  • Visible spectra

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