Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes

Azzarelli, N. and Ponnala, S. and Aguirre, A. and Dampf, S.J. and Davis, M.P. and Ruggiero, M.T. and Lopez Diaz, V. and Babich, J.W. and Coogan, M. and Korter, T. and Doyle, R.P. and Zubieta, J. (2019) Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes. Inorganica Chimica Acta, 489. pp. 301-309. ISSN 0020-1693

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Abstract

The underlying mechanism of the unusual emissive behavior of [Re(CO) 3 -1,1-bis-4-thiazole-(1,4)-diaminobutane)] bromide (4-BT) has been investigated. Synthesis and spectroscopic characterization of structurally similar isomers ([Re(CO) 3 -1,1-bis-2-thiazole-(1,4)-diaminobutane)] bromide (2-BT)) and the location of triplet states, solid state and low temperature spectroscopic measurements, and DFT calculations show that the photophysical properties are not due to photoisomerization as previously hypothesized. The results show that the unusual emissive behavior is not observed in structural isomers, is specific to the previously reported complex, 4-BT, and may arise from vibrational energy relaxation and vibrational cooling. Translation of the unusual emissive behavior to the solid state offers an interesting platform allowing this complex to be potentially utilized as a probe, sensor or photonic device.

Item Type:
Journal Article
Journal or Publication Title:
Inorganica Chimica Acta
Additional Information:
This is the author’s version of a work that was accepted for publication in Inorganica Chimica Acta. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Inorganica Chimica Acta, 489, 2019 DOI: 10.1016/j.ica.2019.01.028
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1604
Subjects:
ID Code:
132152
Deposited By:
Deposited On:
02 Apr 2019 13:20
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 05:07