Luminescence from the trans-Dioxotechnetium(V) Chromophore
Journal Article
·
· Journal of the American Chemical Society, 127(43):14978-14979
Photophysical properties of the trans-dioxotechnetium(V) chromophore are reported for the first time. The complexes [TcO₂(L)₄] ⁺ (L=pyridine or 4-picoline) and [TcO₂(CN)₄]³ ⁻ are luminescent from a ³Eg excited state in the near IR with emission maxima ranging from 715-750 nm. DFT calculations predicted the observed red-shift in emission energy relative to trans-dioxorhenium(V) congeners. Distinct vibronic progressions are observed in the symmetric O=Tc=O and Tc-L stretching frequencies in the 8 K emission spectra and excited state lifetimes mirrored trends of the analogous Re(V) complexes.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 876941
- Report Number(s):
- PNNL-SA-45787; JACSAT; 12298; 13791; KP1301020; TRN: US0601432
- Journal Information:
- Journal of the American Chemical Society, 127(43):14978-14979, Vol. 127, Issue 43; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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