Year-end Sale % OFF 
Abstract
Recent progresses achieved in terms of synthetic procedures allow now the access to polymers of well-defined composition, molecular weight and architecture. Thanks to these recent progresses in polymer engineering, the scope of applications of polymers is far wider than that of any other class of material, ranging from adhesives, coatings, packaging materials, inks, paints, optics, 3D printing, microelectronics or textiles. From a synthetic viewpoint, photoredox catalysis, originally developed for organic chemistry, has recently been applied to the polymer synthesis, constituting a major breakthrough in polymer chemistry. Thanks to the development of photoredox catalysts of polymerization, a drastic reduction of the amount of photoinitiators could be achieved, addressing the toxicity and the extractability issues; high performance initiating abilities are still obtained due to the catalytic approach which regenerates the catalyst. As it is a fast-growing field, this review will be mainly focused on an overview of the recent advances concerning the development of organic and organometallic photoredox catalysts for the photoreticulation of multifunctional monomers for a rapid and efficient access to 3D polymer networks.
Highlights
Photopolymerization reactions are widely used both in industry and in academic laboratories
Some examples of metal and metal-free photoredox catalysts are provided for photoreticulation processes of multifunctional radical or cationic monomers
The advantage of the photoredox catalysis approach is the high efficiency of the system to initiate the polymerization upon mild light irradiation conditions and the low content required
Summary
Photopolymerization reactions are widely used both in industry and in academic laboratories. Light is used to excite the photoredox catalyst which allows electron transfer processes with additives Both oxidation and reduction reactions can be possible. Ii) The redox potentials of the excited state of photoredox catalysts must be in appropriateness to those of the additives to be incorporated into oxidative or reductive cycles (see Figure 1). Three systems involving catalytic cycles for photopolymerization are presented: [14,23,24] In both cases, the photoredox catalyst, used as PS, absorbs the light and goes to its excited state. With well adapted redox potentials and relatively long-lived excited states, these metal-based complexes can be used into photoredox catalysis with suitable oxidation or reductive agents [37,38,39]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
