Oscillations of the lophyl radical concentration during the photodecomposition of o-Cl-hexaarylbisimidazole
(2012) In Journal of Photochemistry and Photobiology A: Chemistry 233. p.60-64- Abstract
- Hexaarylbisimidazole (HABI) is a well established photoinitiator in the graphics industry which undergoes in the absence of other reaction partners a fully reversible homolytic bond cleavage into two lophyl radicals L. Surprisingly we now found oscillations of the radical concentration at low temperature in a solution of o-Cl-HABI in toluene, which is an indication of a more complex photochemistry of the HABI/lophyl system. Furthermore this reaction is a very simple example of an oscillating chemical system working under non-flow conditions which involves only one initial reactant. A possible reaction mechanism based on kinetic simulations is proposed.
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- author
- Schrödner, M. ; Schache, H. ; Lindauer, H. ; Schrödner, Roland LU and Konkin, A.
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Lophyl radical, photoreaction, Oscillating reaction, ESR, Hexaarylbisimidazole
- in
- Journal of Photochemistry and Photobiology A: Chemistry
- volume
- 233
- pages
- 60 - 64
- publisher
- Elsevier
- external identifiers
-
- scopus:84859189674
- ISSN
- 1873-2666
- DOI
- 10.1016/j.jphotochem.2012.02.013
- language
- English
- LU publication?
- no
- id
- 6bab90d0-bed2-44ed-9ae3-15243ea78778
- date added to LUP
- 2017-07-05 15:32:05
- date last changed
- 2023-12-18 14:50:04
@article{6bab90d0-bed2-44ed-9ae3-15243ea78778, abstract = {{Hexaarylbisimidazole (HABI) is a well established photoinitiator in the graphics industry which undergoes in the absence of other reaction partners a fully reversible homolytic bond cleavage into two lophyl radicals L. Surprisingly we now found oscillations of the radical concentration at low temperature in a solution of o-Cl-HABI in toluene, which is an indication of a more complex photochemistry of the HABI/lophyl system. Furthermore this reaction is a very simple example of an oscillating chemical system working under non-flow conditions which involves only one initial reactant. A possible reaction mechanism based on kinetic simulations is proposed.}}, author = {{Schrödner, M. and Schache, H. and Lindauer, H. and Schrödner, Roland and Konkin, A.}}, issn = {{1873-2666}}, keywords = {{Lophyl radical; photoreaction; Oscillating reaction; ESR; Hexaarylbisimidazole}}, language = {{eng}}, pages = {{60--64}}, publisher = {{Elsevier}}, series = {{Journal of Photochemistry and Photobiology A: Chemistry}}, title = {{Oscillations of the lophyl radical concentration during the photodecomposition of o-Cl-hexaarylbisimidazole}}, url = {{http://dx.doi.org/10.1016/j.jphotochem.2012.02.013}}, doi = {{10.1016/j.jphotochem.2012.02.013}}, volume = {{233}}, year = {{2012}}, }