Photophysics and kinetics of naphthopyran derivatives, Part 5: An analytical model utilizing temperature effects to evaluate ABC(2k,3–5φ) kinetic parameters.
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| Title: | Photophysics and kinetics of naphthopyran derivatives, Part 5: An analytical model utilizing temperature effects to evaluate ABC(2k,3–5φ) kinetic parameters. |
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| Authors: | Maafi, M.1 (AUTHOR) mmaafi@dmu.ac.uk, Brown, R. G.2 (AUTHOR) |
| Source: | International Journal of Chemical Kinetics. Aug2007, Vol. 39 Issue 8, p472-479. 8p. 1 Diagram, 1 Chart, 1 Graph. |
| Subjects: | Photochemistry, Absorbance scale (Spectroscopy), Physical & theoretical chemistry, Parameter estimation, Dynamics |
| Abstract: | A theoretical model is established for a photochemical ABC(2k,6φ) system in order to characterize the relationship of its absorbance at the photostationary state with temperature. Provided that the thermal processes of the system are not opposing steps, it has been found that depending on the relative magnitude of the system parameters (two rate constants, up to six quantum yields, and two extinction coefficients), several behaviors are predicted by the model. However, from an analytical viewpoint, this mathematical description generates for all cases, six new equations involving kinetic and spectroscopic parameters that are numerically defined by the available experimental data. For the first time, the latter are used to solve the dynamics of several systems. Novel procedures allowing a complete analytical elucidation of ABC(2k,3φ) systems (eight unknowns) as well as many other cases belonging to ABC(2k,4–5φ) kinetics have been successfully established. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 472–479, 2007 [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Chemical Kinetics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | A theoretical model is established for a photochemical ABC(2k,6φ) system in order to characterize the relationship of its absorbance at the photostationary state with temperature. Provided that the thermal processes of the system are not opposing steps, it has been found that depending on the relative magnitude of the system parameters (two rate constants, up to six quantum yields, and two extinction coefficients), several behaviors are predicted by the model. However, from an analytical viewpoint, this mathematical description generates for all cases, six new equations involving kinetic and spectroscopic parameters that are numerically defined by the available experimental data. For the first time, the latter are used to solve the dynamics of several systems. Novel procedures allowing a complete analytical elucidation of ABC(2k,3φ) systems (eight unknowns) as well as many other cases belonging to ABC(2k,4–5φ) kinetics have been successfully established. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 472–479, 2007 [ABSTRACT FROM AUTHOR] |
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| ISSN: | 05388066 |
| DOI: | 10.1002/kin.20251 |
