An induction period in the formation of the dissipative structures in solutions of anthraquinone

Karitskaya, Svetlana G.; Ponomarev, Sergey

International Journal of Advanced and Applied Sciences

Int. j. adv. appl. sci.

EISSN: 2313-3724

Print ISSN: 2313-626X

Volume 4, Issue 5 (May 2017), Pages: 91-93

Title: An induction period in the formation of the dissipative structures in solutions of anthraquinone

Author(s): Svetlana G. Karitskaya ^1,*, Sergey Ponomarev²

Affiliation(s):

¹Department of Mathematics, Ural Federal University, Yekaterinburg, Russia
²Department of Physics and Technology, Karaganda State University, Karaganda, Kazakhstan

https://doi.org/10.21833/ijaas.2017.05.016

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Abstract:

The purpose of the present work is to characterize the induction period in the kinetics of the formation of luminescent dissipative spatial temporal structures in solutions of anthraquinone. Such structures are formed under ultraviolet illumination in isopropyl alcohol solutions and silicone polymeric films. The structures exhibit three distinctive stages in time, induction, “fast”, and “slow”. During the induction period, no luminescence is observed, and the “fast” and “slow” stages are characterized by the appearance of bright luminescent products. Although similar luminescent structures have been previously reported in literature, no study has been conducted on the characterization of their induction periods. In our work, the observed luminescence is attributed to ketyl radicals while the formation of the structures requires heat and mass (oxygen and solvent radicals) transfer to and from the reaction zones. The induction period appears to be highly sensitive to the intensity of illumination, oxygen and solvent radicals concentrations.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords: Luminescence, Anthraquione, Ketyl, Induction period. Oxygen

Article History: Received 27 January 2017, Received in revised form 9 March 2017, Accepted 10 April 2017

Digital Object Identifier:

https://doi.org/10.21833/ijaas.2017.05.016

Citation:

Karitskaya SG and Ponomarev S (2017). An induction period in the formation of the dissipative structures in solutions of anthraquinone. International Journal of Advanced and Applied Sciences, 4(5): 91-93

http://www.science-gate.com/IJAAS/V4I5/Karitskaya.html

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