Photo-induced reverse valence tautomerism in a metastable Co compound

Osamu Sato, Shinya Hayami, Zhong Ze Gu, Kazuyuki Takahashi, Rie Nakajima, Akira Fujishima

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

In our preceding paper, we have reported that a Co complex, [CoIII-LS(tmeda)(3, 5-DBSQ)(3, 5-DBCat)]· 0.5C6H5CH3, exhibits a photo-induced valence tautomerism. The photo-induced metastable state, [CoII-HS(tmeda) (3, 5-DBSQ)2]· 0.5C6H5CH3, has a back electron transfer band from CoII-HS to 3,5-DBSQ at around 800 nm, indicating that the valence tautomerism should be photo-reversible. In fact, we have found that the metastable state could be photo-pumped back to the original state by exciting the back electron transfer band. The process can be expressed as [CoII-HS(tmeda)(3, 5-DBSQ)2] · 0.5C6H5CH3(metastable state) → [CoIII-LS(tmeda)(3, 5-DBSQ)(3, 5-DBCat)] · 0.5C6H5 CH3 (ground state).

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalChemical Physics Letters
Volume355
Issue number1-2
DOIs
Publication statusPublished - Mar 25 2002
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Sato, O., Hayami, S., Gu, Z. Z., Takahashi, K., Nakajima, R., & Fujishima, A. (2002). Photo-induced reverse valence tautomerism in a metastable Co compound. Chemical Physics Letters, 355(1-2), 169-174. https://doi.org/10.1016/S0009-2614(02)00205-1