New role of aminothiazonaphthalimide derivatives: outstanding photoinitiators for cationic and radical photopolymerizations under visible LEDs

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48684-48693 ◽  
Author(s):  
Pu Xiao ◽  
Frédéric Dumur ◽  
Jing Zhang ◽  
Bernadette Graff ◽  
Didier Gigmes ◽  
...  
Keyword(s):  
Visible Light ◽  
Radical Polymerization ◽  
Cationic Polymerization

Aminothiazonaphthalimide derivatives can act as photoinitiators (when combined with additives) to start the cationic polymerization or the radical polymerization upon exposure to visible LEDs or a polychromatic visible light.

scholarly journals Self-strengthening hybrid dental adhesive via visible-light irradiation triple polymerization

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52434-52447 ◽  
Author(s):  
Linyong Song ◽  
Qiang Ye ◽  
Xueping Ge ◽  
Anil Misra ◽  
Candan Tamerler ◽  
...  
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Polymerization ◽  
Visible Light Irradiation ◽  
Cationic Polymerization ◽  
Sol Gel ◽  
Free Radical Polymerization ◽  
Light Irradiation ◽  
Dental Adhesive ◽  
Polymerization System

An integrated triple polymerization system containing free radical polymerization, cationic polymerization, and photoacid-induced sol–gel reaction was designed and successfully applied to develop dental adhesive capable of self-strengthening property in wet environments.

scholarly journals Carbazole-based compounds as photoinitiators for free radical and cationic polymerization upon near visible light illumination

2018 ◽  
Vol 17 (5) ◽  
pp. 578-585 ◽  
Author(s):  
Assi Al Mousawi ◽  
Ahmad Arar ◽  
Malika Ibrahim-Ouali ◽  
Sylvain Duval ◽  
Frédéric Dumur ◽  
...  
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Polymerization ◽  
Cationic Polymerization ◽  
High Performance ◽  
Free Radical Polymerization ◽  
Light Illumination ◽  
Visible Light Illumination

Six new carbazole based compounds are synthesized and proposed as high performance photoinitiators for both the free radical polymerization of acrylates and the cationic polymerization of epoxides.

Novel photoinitiators based on difluoroborate complexes of squaraine dyes for radical polymerization of acrylates upon visible light

2021 ◽  
Author(s):  
Alicja Balcerak ◽  
Dominika Kwiatkowska ◽  
Janina Kabatc
Keyword(s):  
Visible Light ◽  
Present Article ◽  
Radical Polymerization ◽  
Squaraine Dyes ◽  
Squaraine Dye ◽  
Two Component ◽  
Acrylate Monomers

The present article describes the efficiency of novel two-component photoinitiators based on typical squaraine dye and its difluoroborate analogues for radical polymerization of acrylate monomers. The role of photosensitizers in...

scholarly journals Panchromatic Copper Complexes for Visible Light Photopolymerization

Photochem ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 167-189
Author(s):  
Alexandre Mau ◽  
Guillaume Noirbent ◽  
Céline Dietlin ◽  
Bernadette Graff ◽  
Didier Gigmes ◽  
...  
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Polymerization ◽  
Copper Complexes ◽  
Free Radical Polymerization ◽  
Photoluminescence Properties ◽  
System Formation ◽  
Iodonium Salt ◽  
Visible Light Photopolymerization ◽  
Cationic Polymerizations

In this work, eleven heteroleptic copper complexes were designed and studied as photoinitiators of polymerization in three-component photoinitiating systems in combination with an iodonium salt and an amine. Notably, ten of them exhibited panchromatic behavior and could be used for long wavelengths. Ferrocene-free copper complexes were capable of efficiently initiating both the radical and cationic polymerizations and exhibited similar performances to that of the benchmark G1 system. Formation of acrylate/epoxy IPNs was also successfully performed even upon irradiation at 455 nm or at 530 nm. Interestingly, all copper complexes containing the 1,1′-bis(diphenylphosphino)ferrocene ligand were not photoluminescent, evidencing that ferrocene could efficiently quench the photoluminescence properties of copper complexes. Besides, these ferrocene-based complexes were capable of efficiently initiating free radical polymerization processes. The ferrocene moiety introduced in the different copper complexes affected neither their panchromatic behaviors nor their abilities to initiate free radical polymerizations.

scholarly journals Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3192
Author(s):  
Nicolas Giacoletto ◽  
Frédéric Dumur
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Cationic Polymerization ◽  
Free Radical Polymerization ◽  
Research Field ◽  
4D Printing ◽  
Unique Structure ◽  
The Past ◽  
Mechanistic Investigations ◽  
Active Research

Over the past several decades, photopolymerization has become an active research field, and the ongoing efforts to develop new photoinitiating systems are supported by the different applications in which this polymerization technique is involved—including dentistry, 3D and 4D printing, adhesives, and laser writing. In the search for new structures, bis-chalcones that combine two chalcones’ moieties within a unique structure were determined as being promising photosensitizers to initiate both the free-radical polymerization of acrylates and the cationic polymerization of epoxides. In this review, an overview of the different bis-chalcones reported to date is provided. Parallel to the mechanistic investigations aiming at elucidating the polymerization mechanisms, bis-chalcones-based photoinitiating systems were used for different applications, which are detailed in this review.

A Visible Light Initiating System for Free Radical Promoted Cationic Polymerization

1994 ◽  
Vol 27 (14) ◽  
pp. 3683-3693 ◽  
Author(s):  
Yubai Bi ◽  
Douglas C. Neckers
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Cationic Polymerization
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