Issue 77, 2013
From the journal:

Chemical Communications

Spin-triplet excitons in 1,3-diphenyl-7-(fur-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl†‡

Christos P. Constantinides,a   Emma Carter,b   Damien M. Murphy,b   Maria Manoli,a   Gregory M. Leitus,c   Michael Bendikov,c   Jeremy M. Rawsond  and  Panayiotis A. Koutentis*a  

* Corresponding authors

a Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, Cyprus
E-mail: koutenti@ucy.ac.cy
Fax: +357 22892809
Tel: +357 22892783

b The School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, UK

c Department of Organic Chemistry, Weizmann Institute of Science, 76100 Rehovot, Israel

d Department of Chemistry & Biochemistry, University of Windsor, 401 Sunset Avenue, Windsor, ON, Canada N9B 3P4

Abstract

7-(Fur-2-yl)benzotriazinyl 1 is the first example of a hydrazyl radical dimer with a thermally accessible triplet state. The triplet exciton (|D| = 0.018 cm−1, |E| = 0.001 cm−1) was observed by solid-state VT-EPR spectroscopy between 5 and 140 K. VT crystallography, DFT calculations and magnetic susceptibility studies reveal a strong temperature dependence of the intra-dimer exchange interaction with J/k ∼ −254 + 0.0007T2.

Graphical abstract: Spin-triplet excitons in 1,3-diphenyl-7-(fur-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl

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Article information

DOI
https://doi.org/10.1039/C3CC44899A
Article type
Communication
Submitted
30 Jun 2013
Accepted
23 Jul 2013
First published
24 Jul 2013

Chem. Commun., 2013,49, 8662-8664

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Spin-triplet excitons in 1,3-diphenyl-7-(fur-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl

C. P. Constantinides, E. Carter, D. M. Murphy, M. Manoli, G. M. Leitus, M. Bendikov, J. M. Rawson and P. A. Koutentis, Chem. Commun., 2013, 49, 8662 DOI: 10.1039/C3CC44899A

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