A novel naphthalimide scaffold based iodonium salt as a one-component photoacid/photoinitiator for cationic and radical polymerization under LED exposure

2016 ◽  
Vol 7 (37) ◽  
pp. 5873-5879 ◽  
Author(s):  
N. Zivic ◽  
M. Bouzrati-Zerrelli ◽  
S. Villotte ◽  
F. Morlet-Savary ◽  
C. Dietlin ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Cationic Polymerization ◽  
Iodonium Salt

A strong drawback to overcome for photoinitiators of cationic polymerization or photoacids is their low photosensitivity for long wavelengths.

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.

Excited states of ketones as electron donors—ketone—iodonium salt systems as photoinitiators for radical polymerization

1990 ◽  
Vol 52 (1) ◽  
pp. 111-122 ◽  
Author(s):  
H.-J. Timpe ◽  
K.-P. Kronfeld ◽  
U. Lammel ◽  
J.-P. Fouassier ◽  
D.-J. Lougnot
Keyword(s):  
Radical Polymerization ◽  
Excited States ◽  
Electron Donors ◽  
Iodonium Salt ◽  
Salt Systems

New bimolecular photoinitiating systems based on terphenyl derivatives as highly efficient photosensitizers for 3D printing application

2020 ◽  
Vol 11 (4) ◽  
pp. 922-935 ◽  
Author(s):  
Emilia Hola ◽  
Joanna Ortyl ◽  
Magdalena Jankowska ◽  
Maciej Pilch ◽  
Mariusz Galek ◽  
...  
Keyword(s):  
Free Radical ◽  
3D Printing ◽  
Radical Polymerization ◽  
Cationic Polymerization ◽  
Free Radical Polymerization ◽  
Iodonium Salts ◽  
Highly Efficient

New 2-(diethylamino)-4,6-diphenyl-benzene-1,3-dicarbonitrile derivatives were proposed as photoinitiators in conjunction with iodonium salts for: (i) the cationic polymerization, (ii) the free-radical polymerization, and (iii) the synthesis of IPNs.

Photoacid Generation by Stepwise Two-Photon Absorption:  Photoinitiated Cationic Polymerization of Cyclohexene Oxide by Using Benzodioxinone in the Presence of Iodonium Salt

2008 ◽  
Vol 41 (2) ◽  
pp. 295-297 ◽  
Author(s):  
Mehmet Atilla Tasdelen ◽  
Volkan Kumbaraci ◽  
Steffen Jockusch ◽  
Nicholas J. Turro ◽  
Naciye Talinli ◽  
...  
Keyword(s):  
Cationic Polymerization ◽  
Photon Absorption ◽  
Cyclohexene Oxide ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Iodonium Salt
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