Single amino acid chelate complexes of the M(CO)3+ core for correlating fluorescence and radioimaging studies (M = 99mTc or Re)

Michael P. Coogan, Robert P. Doyle, John F. Valliant, John W. Babich, Jon Zubieta

Research output: Contribution to journalReview articlepeer-review

34 Scopus citations


Single amino acid chelates (SAACs) and SAAC-like bifunctional ligands can be exploited in the design of a variety of bioconjugates for facile metallation with the M(CO)3+ unit with M = 99mTc or Re. When the donor groups of the ligand are quinolone, thiazole or other similarly conjugated heterocycles, the rhenium complexes are fluorescent, affording complementary and isostructural fluorescent probes to the radioactive 99mTc analogues. The versatility of the approach has been demonstrated by the preparation of bioconjugates incorporating peptides, biotin, folic acid, thymidine and vitamin B12. In addition, the unusual photophysical properties observed for rhenium of the [bisthiazole-diamino butane-Re(CO)3+] derivative [BTBA-Re(CO)3] + are discussed.

Original languageEnglish (US)
Pages (from-to)255-261
Number of pages7
JournalJournal of Labelled Compounds and Radiopharmaceuticals
Issue number4
StatePublished - Apr 2014


  • bioconjugate chemistry
  • correlation of in vitro fluorescence and in vivo radioimaging
  • fluorescence spectroscopy
  • rhenium photophysics
  • rhenium-tricarbonyl core

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Radiology Nuclear Medicine and imaging
  • Drug Discovery
  • Spectroscopy
  • Organic Chemistry


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