Emission wavelength variation with changes in excitation in a Re(i)-bisthiazole ligand complex that breaks the Kasha-Vavilov rule

Kelly E. Henry, Rebeca G. Balasingham, Anthony R. Vortherms, James A. Platts, John F. Valliant, Michael P. Coogan, Jon A Zubieta, Robert Patrick Doyle

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We report highly unusual photophysical properties of a fac-Re(CO) 3-bisthiazole complex, which is shown to break the Kasha-Vavilov rule. Herein, we show that such a complex has unusual emission wavelength variation due to the presence of photo-induced isomerisation from the stable, ground-state N,N-bound thiazole complex to S,N- and S,S-donation in the photo-induced excited state. A triple excitation, triple emission profile along with extensive DFT calculations support this theory to showcase an unusual circumstance of suulfur donation to the fac-Re(CO)3 core upon luminescence. fac-Rhenium tricarbonyl complexes are extensively studied due to their fluorescent properties, high stability, and ready incorporation into conjugates with broad applicability in imaging and targeting. The spectroscopic features of the complex under study have broad fundamental interest while also offering potential for design of novel agents for use in biological imaging studies.

Original languageEnglish (US)
Pages (from-to)2490-2495
Number of pages6
JournalChemical Science
Volume4
Issue number6
DOIs
StatePublished - Jun 2013

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Carbon Monoxide
Rhenium
Ligands
Imaging techniques
Thiazoles
Wavelength
Isomerization
Excited states
Discrete Fourier transforms
Ground state
Luminescence

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Emission wavelength variation with changes in excitation in a Re(i)-bisthiazole ligand complex that breaks the Kasha-Vavilov rule. / Henry, Kelly E.; Balasingham, Rebeca G.; Vortherms, Anthony R.; Platts, James A.; Valliant, John F.; Coogan, Michael P.; Zubieta, Jon A; Doyle, Robert Patrick.

In: Chemical Science, Vol. 4, No. 6, 06.2013, p. 2490-2495.

Research output: Contribution to journalArticle

Henry, Kelly E. ; Balasingham, Rebeca G. ; Vortherms, Anthony R. ; Platts, James A. ; Valliant, John F. ; Coogan, Michael P. ; Zubieta, Jon A ; Doyle, Robert Patrick. / Emission wavelength variation with changes in excitation in a Re(i)-bisthiazole ligand complex that breaks the Kasha-Vavilov rule. In: Chemical Science. 2013 ; Vol. 4, No. 6. pp. 2490-2495.
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