The excited multiplet states of 5,10,15-tri-n-pentyl-20 (1′,1′,3′, 3′-tetramethylisoindolin -2′-yloxyl-5′-yl)porphyrinato zinc(II)

Kazuyuki Ishii, Steven E. Bottle, Shinsuke Shimizu, Craig D. Smith, Nagao Kobayashi

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Photo-physical properties of 5,10,15-tri-n-pentyl-20-(1′,1′,3′,3′- tetramethylisoindolin-2′-yloxyl-5′-yl)porphyrinato zinc(II), 1, have been investigated using time-resolved EPR (TREPR) and transient absorption measurements. A formation of the excited doublet (D 1 ) and quartet (Q 1 ) states constituted by excited triplet zinc porphyrin (ZnP) and doublet nitroxide is confirmed by TREPR. This is the first D 1 and Q 1 observation in a system where the nitroxide is directly substituted to a porphyrin ligand. Compound 1 exhibits the longest lifetime of any nitroxide-porphyrin systems in the lowest excited state, indicating a relatively weak electron exchange interaction between triplet ZnP and doublet nitroxide.

Original languageEnglish
Pages (from-to)94-98
Number of pages5
JournalChemical Physics Letters
Issue number1-2
Publication statusPublished - 2003 Mar 7
Externally publishedYes

ASJC Scopus subject areas

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


Dive into the research topics of 'The excited multiplet states of 5,10,15-tri-n-pentyl-20 (1′,1′,3′, 3′-tetramethylisoindolin -2′-yloxyl-5′-yl)porphyrinato zinc(II)'. Together they form a unique fingerprint.

Cite this