Usefulness of Φ-order kinetics for the investigation, characterisation and quantification of photodegradation processes
| dc.cclicence | CC-BY-NC | en |
| dc.contributor.author | Maafi, Mounir | en |
| dc.contributor.author | Alqarni, M. | en |
| dc.date.acceptance | 2016-12-14 | en |
| dc.date.accessioned | 2017-04-25T09:21:12Z | |
| dc.date.available | 2017-04-25T09:21:12Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | Φ-order kinetics has been shown to be the best tool to study photokinetics [1 – 6]. Various species have been studied using this approach including photochromes [1, 2] and drugs [3 – 6]. The unimolecular photodegradation processes of the form AB (1Φ) and photoreversible systems AB (2Φ), where A, the initial species phototransforms into a product B (A→B) which itself can return to A (A→B) via two distinct photoprocesses, each characterized each by an individual efficiency (Φ), have been mathematically described by integrated rate-law equations which express the so called 'Φ-order' kinetics [1 – 6]. The application of this novel approach was found to be useful to determine a number of photoreaction attributes. The reaction's photochemical quantum yield(s), the effects of initial species concentration, or the impact of competitive absorbers on the rate-constant of the photoactive species were all made readily accessible by simple methods. More importantly, the Φ-order kinetics has proven to facilitate the development of a wide range of actinometers from AB (1Φ) and AB (2Φ) systems [2 – 6]. This novel Φ-order kinetic method clearly has the potential for application in various fields including the photodegradation of natural products. The details of Φ-order elucidation kinetic methods will be discussed here and examples of application presented. | en |
| dc.funder | N/A | en |
| dc.identifier.citation | Maafi, M. and Alqarni, M., 2016. Usefulness of Φ-order kinetics for the investigation, characterisation and quantification of photodegradation processes. Planta Medica, 82 (S 01), pp.S1-S381. | en |
| dc.identifier.doi | https://doi.org/10.1055/s-0036-1596612 | |
| dc.identifier.uri | http://hdl.handle.net/2086/14090 | |
| dc.language.iso | en | en |
| dc.projectid | N/A | en |
| dc.publisher | Planta Medica | en |
| dc.researchinstitute | Leicester Institute for Pharmaceutical Innovation - From Molecules to Practice (LIPI) | en |
| dc.subject | Spectrophotokinetics | en |
| dc.subject | photodegradation | en |
| dc.subject | Φ-order kinetics | en |
| dc.subject | quantum yield | en |
| dc.subject | actinometry | en |
| dc.subject | UV/Vis spectroscopy | en |
| dc.title | Usefulness of Φ-order kinetics for the investigation, characterisation and quantification of photodegradation processes | en |
| dc.type | Article | en |