Titre : |
Derivatives of 1,4-naphthoquinone as visible-light-absorbing one-component photoinitiators for radical polymerisation |
Type de document : |
texte imprimé |
Auteurs : |
Rafal Strzelczyk, Auteur ; Radoslaw Podsiadly, Auteur |
Année de publication : |
2015 |
Article en page(s) : |
p. 229-235 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Caractérisation Colorants -- Synthèse Naphtoquinone Photoamorceurs (chimie) Polyaddition
|
Index. décimale : |
667.2 Colorants et pigments |
Résumé : |
Bifunctional visible-light photoinitiators for free radical polymerisation based on a 1,4-naphthoquinone skeleton were synthesised and characterised using proton nuclear magnetic resonance spectroscopy and chemical ionisation mass spectrometry. Their basic spectroscopic properties, such as absorption and low-temperature phosphorescence spectra, and their red-ox properties were also measured. These initiators contain an appropriate electron/hydrogen donor group in the skeleton and do not require an additional coinitiator for initiation. During irradiation they act both as a triplet photosensitiser and as a hydrogen/electron donor. The ability of each naphthoquinone to act as a photoinitiator strongly depends on its chemical structure. These studies suggest that initiator radicals are generated from the triplet state in an intermolecular electron/hydrogen transfer reaction. |
Note de contenu : |
- EXPERIMENTAL : General - Synthesis - Photochemical experiments
- RESULTS AND DISCUSSION : Synthesis and spectroscopic characterisation of dyes - Free radical polymerisation |
DOI : |
10.1111/cote.12144 |
En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12144 |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24125 |
in COLORATION TECHNOLOGY > Vol. 131, N° 3 (06/2015) . - p. 229-235