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Volume 9
Issue 2
10.3390/coatings9020111
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Review

Cage Effect under Photolysis in Polymer Matrices

by
Igor V. Khudyakov
1,*,
Peter P. Levin
2,3 and
Aleksei F. Efremkin
3,†
1
Department of Chemistry, Columbia University, New York, NY 10027, USA
2
Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 119334 Moscow, Russia
3
Semenov Institute of Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
†
Dr. A.F. Efremkin passed away on 12 January 2019.
Coatings 2019, 9(2), 111; https://doi.org/10.3390/coatings9020111
Submission received: 4 January 2019 / Revised: 26 January 2019 / Accepted: 31 January 2019 / Published: 12 February 2019
(This article belongs to the Special Issue Light-Curable Coatings)
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Abstract

Photoinduced elementary reactions of low-MW compounds in polymers is an area of active research. Cured organic polymer coatings often undergo photodegradation by free-radical paths. Besides practical importance, such studies teach how the polymer environment controls elementary free-radical reactions. Presented here is a review of recent literature which reports such studies by product analysis and by a time-resolve technique of photochemical reaction inside the cage of a polymer and in the bulk of a polymer. It was established that application of moderate external magnetic field allows the control of the kinetics of free radicals in elastomers. Preheating and stretching of elastomers affect reactivity of photoproduced radicals.
Keywords: cage effect; geminate recombination; F- and G-radical pairs; polymers; photodissociation; photoreduction; magnetic field effect cage effect; geminate recombination; F- and G-radical pairs; polymers; photodissociation; photoreduction; magnetic field effect

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MDPI and ACS Style

Khudyakov, I.V.; Levin, P.P.; Efremkin, A.F. Cage Effect under Photolysis in Polymer Matrices. Coatings 2019, 9, 111. https://doi.org/10.3390/coatings9020111

AMA Style

Khudyakov IV, Levin PP, Efremkin AF. Cage Effect under Photolysis in Polymer Matrices. Coatings. 2019; 9(2):111. https://doi.org/10.3390/coatings9020111

Chicago/Turabian Style

Khudyakov, Igor V., Peter P. Levin, and Aleksei F. Efremkin. 2019. "Cage Effect under Photolysis in Polymer Matrices" Coatings 9, no. 2: 111. https://doi.org/10.3390/coatings9020111

APA Style

Khudyakov, I. V., Levin, P. P., & Efremkin, A. F. (2019). Cage Effect under Photolysis in Polymer Matrices. Coatings, 9(2), 111. https://doi.org/10.3390/coatings9020111

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