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Photochemistry in photonic crystal fiber nanoreactors
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Chen, Jocelyn S. Y., Euser, Tijmen G., Farrer, Nicola J., Sadler, P. J., Scharrer, Michael and Russell, Philip St. J. (2010) Photochemistry in photonic crystal fiber nanoreactors. Chemistry - A European Journal, Vol.16 (No.19). pp. 5607-5612. doi:10.1002/chem.201000496 ISSN 0947-6539.
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Official URL: http://dx.doi.org/10.1002/chem.201000496
Abstract
We report the use of a liquid-filled hollow-core photonic crystal fiber (PCF) as a highly controlled photochemical reactor. Hollow-core PCFs have several major advantages over conventional sample cells: the sample volume per optical path length is very small (2.8 nL cm(-1) in the fiber used), long optical path lengths are possible as a result of very low intrinsic waveguide loss, and furthermore the light travels in a diffractionless single mode with a constant transverse intensity profile. As a proof of principle, the (very low) quantum yield of the photochemical conversion of vitamin Bp, cyanocobalamin (CNCbl) to hydroxocobalamin ([H(2)OCbl](+)) in aqueous solution was measured for several pH values from 2.5 to 7.5. The dynamics of the actively induced reaction were monitored in real-time by broadband absorption spectroscopy. The PCF nanoreactor required ten thousand times less sample volume compared to conventional techniques. Furthermore. the enhanced sensitivity and optical pump intensity implied that even systems with very small quantum yields can be measured very quickly in our experiments one thousand times faster than in a conventional cuvette.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry Q Science > QP Physiology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Photochemistry, Hydrolysis, Vitamin B12, Photonic crystals | ||||
| Journal or Publication Title: | Chemistry - A European Journal | ||||
| Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||
| ISSN: | 0947-6539 | ||||
| Official Date: | 17 May 2010 | ||||
| Dates: |
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| Volume: | Vol.16 | ||||
| Number: | No.19 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 5607-5612 | ||||
| DOI: | 10.1002/chem.201000496 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Körber-Stiftung, Friedrich-Alexander-Universität Erlangen-Nürnberg, Engineering and Physical Sciences Research Council (EPSRC), Medical Research Council (Great Britain) (MRC) | ||||
| Grant number: | EP/G006792/1 (EPSRC), EP/F034210/1 (EPSRC), G0701062 (MRC) |
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