skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Luminescence from the trans-Dioxotechnetium(V) Chromophore

Abstract

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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
876941
Report Number(s):
PNNL-SA-45787
Journal ID: ISSN 0002-7863; JACSAT; 12298; 13791; KP1301020; TRN: US0601432
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the American Chemical Society, 127(43):14978-14979; Journal Volume: 127; Journal Issue: 43
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; EMISSION SPECTRA; EXCITED STATES; LUMINESCENCE; TECHNETIUM COMPLEXES; DENSITY FUNCTIONAL METHOD; Environmental Molecular Sciences Laboratory

Citation Formats

Del Negro, Andy S., Wang, Zheming, Seliskar, Carl J., Heineman, William R., Sullivan, Brian P., Hightower, Sean E., Hubler, Timothy L., and Bryan, Samuel A.. Luminescence from the trans-Dioxotechnetium(V) Chromophore. United States: N. p., 2005. Web. doi:10.1021/ja054906m.
Del Negro, Andy S., Wang, Zheming, Seliskar, Carl J., Heineman, William R., Sullivan, Brian P., Hightower, Sean E., Hubler, Timothy L., & Bryan, Samuel A.. Luminescence from the trans-Dioxotechnetium(V) Chromophore. United States. doi:10.1021/ja054906m.
Del Negro, Andy S., Wang, Zheming, Seliskar, Carl J., Heineman, William R., Sullivan, Brian P., Hightower, Sean E., Hubler, Timothy L., and Bryan, Samuel A.. Wed . "Luminescence from the trans-Dioxotechnetium(V) Chromophore". United States. doi:10.1021/ja054906m.
@article{osti_876941,
title = {Luminescence from the trans-Dioxotechnetium(V) Chromophore},
author = {Del Negro, Andy S. and Wang, Zheming and Seliskar, Carl J. and Heineman, William R. and Sullivan, Brian P. and Hightower, Sean E. and Hubler, Timothy L. and Bryan, Samuel A.},
abstractNote = {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.},
doi = {10.1021/ja054906m},
journal = {Journal of the American Chemical Society, 127(43):14978-14979},
number = 43,
volume = 127,
place = {United States},
year = {Wed Nov 02 00:00:00 EST 2005},
month = {Wed Nov 02 00:00:00 EST 2005}
}