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Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol

Nema prikaza
Autori
Radotić, Ksenija
Zakrzewska, Joanna
Sladic, Dusan
Jeremic, M.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
Ultraviolet light-induced photochemical transformations of coniferyl alcohol have been studied, using spectrophotometric and H-1 NMR approaches. It was shown earlier that coniferyl alcohol can be polymerized not only enzymically but also by photoirradiation, This study furthers our knowledge on the UV radiation-induced polymerization of coniferyl alcohol. In the photochemical reaction of coniferyl alcohol, quinone-methide is the first transient formed. In subsequent reactions quinone-methide produces dimers, oligomers and a polymer as the end product. The reaction rate constants are pH dependent. The results are interpreted in terms of an ionic mechanism of the photochemical reaction, contrary to enzymic polymerization that involves formation of phenoxy radicals. The study may have ecological importance because of the increase of UV radiation reaching the earth's surface due to ozone layer depletion.
Ključne reči:
coniferyl alcohol / UV radiation / polymerization / UV-Vis absorption spectroscopy / 1H NMR spectroscopy
Izvor:
Photochemistry and Photobiology, 1997, 65, 2, 284-291
Izdavač:
  • Blackwell Publishing Inc.

ISSN: 0031-8655

WoS: A1997WK33700022

Scopus: 2-s2.0-0030990989
[ Google Scholar ]
16
13
Handle
https://hdl.handle.net/21.15107/rcub_cherry_2586
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/36
Kolekcije
  • Radovi istraživača / Researchers’ publications
Institucija/grupa
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Radotić, Ksenija
AU  - Zakrzewska, Joanna
AU  - Sladic, Dusan
AU  - Jeremic, M.
PY  - 1997
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/36
AB  - Ultraviolet light-induced photochemical transformations of coniferyl alcohol have been studied, using spectrophotometric and H-1 NMR approaches. It was shown earlier that coniferyl alcohol can be polymerized not only enzymically but also by photoirradiation, This study furthers our knowledge on the UV radiation-induced polymerization of coniferyl alcohol. In the photochemical reaction of coniferyl alcohol, quinone-methide is the first transient formed. In subsequent reactions quinone-methide produces dimers, oligomers and a polymer as the end product. The reaction rate constants are pH dependent. The results are interpreted in terms of an ionic mechanism of the photochemical reaction, contrary to enzymic polymerization that involves formation of phenoxy radicals. The study may have ecological importance because of the increase of UV radiation reaching the earth's surface due to ozone layer depletion.
PB  - Blackwell Publishing Inc.
T2  - Photochemistry and Photobiology
T1  - Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol
EP  - 291
IS  - 2
SP  - 284
VL  - 65
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2586
ER  - 
@article{
author = "Radotić, Ksenija and Zakrzewska, Joanna and Sladic, Dusan and Jeremic, M.",
year = "1997",
abstract = "Ultraviolet light-induced photochemical transformations of coniferyl alcohol have been studied, using spectrophotometric and H-1 NMR approaches. It was shown earlier that coniferyl alcohol can be polymerized not only enzymically but also by photoirradiation, This study furthers our knowledge on the UV radiation-induced polymerization of coniferyl alcohol. In the photochemical reaction of coniferyl alcohol, quinone-methide is the first transient formed. In subsequent reactions quinone-methide produces dimers, oligomers and a polymer as the end product. The reaction rate constants are pH dependent. The results are interpreted in terms of an ionic mechanism of the photochemical reaction, contrary to enzymic polymerization that involves formation of phenoxy radicals. The study may have ecological importance because of the increase of UV radiation reaching the earth's surface due to ozone layer depletion.",
publisher = "Blackwell Publishing Inc.",
journal = "Photochemistry and Photobiology",
title = "Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol",
pages = "291-284",
number = "2",
volume = "65",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2586"
}
Radotić, K., Zakrzewska, J., Sladic, D.,& Jeremic, M.. (1997). Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol. in Photochemistry and Photobiology
Blackwell Publishing Inc.., 65(2), 284-291.
https://hdl.handle.net/21.15107/rcub_cherry_2586
Radotić K, Zakrzewska J, Sladic D, Jeremic M. Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol. in Photochemistry and Photobiology. 1997;65(2):284-291.
https://hdl.handle.net/21.15107/rcub_cherry_2586 .
Radotić, Ksenija, Zakrzewska, Joanna, Sladic, Dusan, Jeremic, M., "Study of photochemical reactions of coniferyl alcohol .1. Mechanism and intermediate products of UV radiation-induced polymerization of coniferyl alcohol" in Photochemistry and Photobiology, 65, no. 2 (1997):284-291,
https://hdl.handle.net/21.15107/rcub_cherry_2586 .

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