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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Cowley, Andrew Howard-Jones, Annaleise R. Bourgeois, Dominique Baldwin, Jack E. Adam, Virgile |
| Copyright Year | 2009 |
| Abstract | Mechanistic investigations of biological enzymatic processes require controlled initiation and monitoring of catalytic reactions. A well-known technique to trap and observe reaction intermediates building up along a reaction pathway is the use of low temperature conditions. Here, we report a kinetically competent system for the release of molecular oxygen at cryogenic temperature, using a cobalt-based caged oxygen molecule, (μ-peroxo)(μ-hydroxo)bis[bis(bipyridyl)cobalt(III)] nitrate. Cryophotolysis of this compound was induced using 266 nm laser light and monitored by absorption microspectrophotometry. Furthermore, to verify that photo-fragmentation was accompanied by release of the active caged molecule, the production of dioxygen during cryophotolysis was directly visualized. This work lays the foundations for the use of low temperature reaction triggering as a tool to prolong the lifetime of normally unstable intermediate states in oxygen-dependant enzymes. |
| Starting Page | 1150 |
| Ending Page | 1156 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 1474905X |
| Volume Number | 8 |
| Issue Number | 8 |
| Journal | Photochemical & Photobiological Sciences |
| DOI | 10.1039/b821516b |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Nitrate Ultraviolet\u2013visible spectroscopy Allotropes of oxygen Cryogenics Laser Cobalt |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry |
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