EdenteV2, Istex, Corpus, bibRecord, 006A23

Light‐Harvesting Organic Photoinitiators of Polymerization

Identifieur interne : 006A23 ( Istex/Corpus ); précédent : 006A22; suivant : 006A24

Light‐Harvesting Organic Photoinitiators of Polymerization

Auteurs : Jacques Lalevée ; Mohamad-Ali Tehfe ; Frédéric Dumur ; Didier Gigmes ; Bernadette Graff ; Fabrice Morlet-Savary ; Jean-Pierre Fouassier

Source :

Macromolecular Rapid Communications [ 1022-1336 ] ; 2013-02-12.

RBID : ISTEX:D5D2D9A5A81D30E405F682AF0EB4E125086A4FCA

English descriptors

Abstract

Two new photoinitiators with unprecedented light absorption properties are proposed on the basis of a suitable truxene skeleton where several UV photoinitiators PI units such as benzophenone and thioxanthone are introduced at the periphery and whose molecular orbitals MO can be coupled with those of the PI units: a red‐shifted absorption and a strong increase of the molecular extinction coefficients (by a ≈ 20–1000 fold factor) are found. These compounds are highly efficient light‐harvesting photoinitiators. The scope and practicality of these photoinitiators of polymerization can be dramatically expanded, that is, both radical and cationic polymerization processes are accessible upon very soft irradiation conditions (halogen lamp, LED…︁) thanks to the unique light absorption properties of the new proposed structures.

Url:

https://api.istex.fr/document/D5D2D9A5A81D30E405F682AF0EB4E125086A4FCA/fulltext/pdf

DOI: 10.1002/marc.201200578

Links to Exploration step

ISTEX:D5D2D9A5A81D30E405F682AF0EB4E125086A4FCA

Le document en format XML

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<p>Two new photoinitiators with unprecedented light absorption properties are proposed on the basis of a suitable truxene skeleton where several UV photoinitiators PI units such as benzophenone and thioxanthone are introduced at the periphery and whose molecular orbitals MO can be coupled with those of the PI units: a red‐shifted absorption and a strong increase of the molecular extinction coefficients (by a ≈ 20–1000 fold factor) are found. These compounds are highly efficient light‐harvesting photoinitiators. The scope and practicality of these photoinitiators of polymerization can be dramatically expanded, that is, both radical and cationic polymerization processes are accessible upon very soft irradiation conditions (halogen lamp, LED…︁) thanks to the unique light absorption properties of the new proposed structures.</p>
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<abstract xml:lang="en" style="graphical"><p><hi rend="bold">A major breakthrough in the ability of photoinitiators</hi> to initiate polymerization processes is presented. Specifically, photoinitiators with unprecedented light absorption properties are proposed thanks to a suitable skeleton. The scope and practicality of photoinitiators of polymerization can be dramatically expanded.
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<correspondenceTo><lineatedText><line>Jacques Lalevée, Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, France</line>
<line>Didier Gigmes, Aix‐Marseille Université, CNRS Institut de Chimie Radicalaire, UMR 7273, équipe CROPS, case 542, Faculté des, Sciences de Saint Jérôme, Avenue Escadrille, Normandie Niémen, 13397 Marseille Cedex 20, France.</line>
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<p>Two new photoinitiators with unprecedented light absorption properties are proposed on the basis of a suitable truxene skeleton where several UV photoinitiators PI units such as benzophenone and thioxanthone are introduced at the periphery and whose molecular orbitals MO can be coupled with those of the PI units: a red‐shifted absorption and a strong increase of the molecular extinction coefficients (by a ≈ 20–1000 fold factor) are found. These compounds are highly efficient light‐harvesting photoinitiators. The scope and practicality of these photoinitiators of polymerization can be dramatically expanded, that is, both radical and cationic polymerization processes are accessible upon very soft irradiation conditions (halogen lamp, LED…︁) thanks to the unique light absorption properties of the new proposed structures.</p>
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<abstract type="graphical" xml:lang="en"><p><b>A major breakthrough in the ability of photoinitiators</b> to initiate polymerization processes is presented. Specifically, photoinitiators with unprecedented light absorption properties are proposed thanks to a suitable skeleton. The scope and practicality of photoinitiators of polymerization can be dramatically expanded.
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<name type="personal"><namePart type="given">Jacques</namePart>
<namePart type="family">Lalevée</namePart>
<affiliation>Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, France</affiliation>
<affiliation>E-mail: jacques.lalevee@uha.fr</affiliation>
<affiliation>Jacques Lalevée, Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, FranceDidier Gigmes, Aix‐Marseille Université, CNRS Institut de Chimie Radicalaire, UMR 7273, équipe CROPS, case 542, Faculté des, Sciences de Saint Jérôme, Avenue Escadrille, Normandie Niémen, 13397 Marseille Cedex 20, France.</affiliation>
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<name type="personal"><namePart type="given">Mohamad‐Ali</namePart>
<namePart type="family">Tehfe</namePart>
<affiliation>Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, France</affiliation>
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<name type="personal"><namePart type="given">Frédéric</namePart>
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<affiliation>Aix‐Marseille Université, CNRS Institut de Chimie Radicalaire, UMR 7273, équipe CROPS, case 542, Faculté des, Sciences de Saint Jérôme, Avenue Escadrille, Normandie Niémen, 13397 Marseille Cedex 20, France</affiliation>
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<affiliation>E-mail: didier.gigmes@univ‐amu.fr</affiliation>
<affiliation>Jacques Lalevée, Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, FranceDidier Gigmes, Aix‐Marseille Université, CNRS Institut de Chimie Radicalaire, UMR 7273, équipe CROPS, case 542, Faculté des, Sciences de Saint Jérôme, Avenue Escadrille, Normandie Niémen, 13397 Marseille Cedex 20, France.</affiliation>
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<name type="personal"><namePart type="given">Bernadette</namePart>
<namePart type="family">Graff</namePart>
<affiliation>Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, France</affiliation>
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<name type="personal"><namePart type="given">Fabrice</namePart>
<namePart type="family">Morlet‐Savary</namePart>
<affiliation>Institut de Science des Matériaux de Mulhouse, IS2M–LRC CNRS 7228–ENSCMu‐UHA; 15, rue Jean Starcky, 68057 Mulhouse Cedex, France</affiliation>
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<name type="personal"><namePart type="given">Jean‐Pierre</namePart>
<namePart type="family">Fouassier</namePart>
<affiliation>UHA‐ENSCMu, 3 rue Alfred Werner, 68093 Mulhouse, France</affiliation>
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<abstract lang="en">Two new photoinitiators with unprecedented light absorption properties are proposed on the basis of a suitable truxene skeleton where several UV photoinitiators PI units such as benzophenone and thioxanthone are introduced at the periphery and whose molecular orbitals MO can be coupled with those of the PI units: a red‐shifted absorption and a strong increase of the molecular extinction coefficients (by a ≈ 20–1000 fold factor) are found. These compounds are highly efficient light‐harvesting photoinitiators. The scope and practicality of these photoinitiators of polymerization can be dramatically expanded, that is, both radical and cationic polymerization processes are accessible upon very soft irradiation conditions (halogen lamp, LED…︁) thanks to the unique light absorption properties of the new proposed structures.</abstract>
<abstract>A major breakthrough in the ability of photoinitiators to initiate polymerization processes is presented. Specifically, photoinitiators with unprecedented light absorption properties are proposed thanks to a suitable skeleton. The scope and practicality of photoinitiators of polymerization can be dramatically expanded.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>photochemistry</topic>
<topic>photoinitiators</topic>
<topic>polymerization</topic>
<topic>radical reactions</topic>
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<relatedItem type="host"><titleInfo><title>Macromolecular Rapid Communications</title>
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<note type="content"> As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors.Supporting Info Item: suppl - </note>
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<identifier type="ISSN">1022-1336</identifier>
<identifier type="eISSN">1521-3927</identifier>
<identifier type="DOI">10.1002/(ISSN)1521-3927</identifier>
<identifier type="PublisherID">MARC</identifier>
<part><date>2013</date>
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<number>34</number>
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<accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</accessCondition>
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Light‐Harvesting Organic Photoinitiators of Polymerization

Light‐Harvesting Organic Photoinitiators of Polymerization

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