ORGANOMETALLIC CATIONIC PHOTOINITIATORS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F08%3A00007824" target="_blank" >RIV/00216275:25310/08:00007824 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

ORGANOMETALLIC CATIONIC PHOTOINITIATORS

Original language description

Several arene-iron complexes ((5-2,4-cyclopentadien-1-yl)[(1,2,3,4,5,6-)-arene] ferrous hexafluorophosphate) were tested as photoinitiators for cationic polymerization. The UV light decomposes arene-ironcyclopentadienyl (arene-Fe+Cp) cation selectively to the corresponding aromatic compound and iron cyclopentadiene (CpFe+) cation. Structure of aromatic compound affects decomposition upon UV light. FeCp+ formed during irradiation is active species for cationic polymerization. Decomposition of arene-ironinitiators upon UV light was followed by UV-VIS spectroscopy. It was measured the decrease of absorption band at about 245 nm after irradiation 2x10-4 M solution in acetonitrile. Super pressure mercury lamp was used as source of UV radiation. Extinctioncoefficients and energies need for achieving 50% conversion were calculated for all initiators. Efficiency of polymerization initiatiation was followed by FTIR spectroscopy in vinylether and epoxide monomers. Results from FTIR showed that

Czech name

Organokovové kationtové fotoiniciátory

Czech description

Pomocí UV-VIS spektroskopie byl sledován fotorozpad organokovových komplexů. Byly získány spektra 2x10-4 M roztoku iniciátorů v acetonitrilu a sledován úbytek pásu 245 nm po ozáření vysokotlakou rtuťovou výbojkou. Byly stanoveny extinkční koeficienty a energie nutné k dosažení 50% konverze. Účinnost polymerace byla sledována FTIR spektroskopií ve vinyletherovém a epoxidovém monomeru.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemicke listy

ISSN

1803-2389

e-ISSN

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Volume of the periodical

102

Issue of the periodical within the volume

Neuveden

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

3

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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