Next Article in Journal
Synthesis of Novel Nitrogen-Containing Heterocycle Bromophenols and Their Interaction with Keap1 Protein by Molecular Docking
Previous Article in Journal
Synthesis and Antibacterial Evaluation of a Series of 11,12-Cyclic Carbonate Azithromycin-3-O-descladinosyl-3-O-carbamoyl Glycosyl Derivatives
Previous Article in Special Issue
Theoretical Study of ClOO + NO Reaction: Mechanism and Kinetics
Article Menu

Export Article

Open AccessArticle
Molecules 2017, 22(12), 2143; doi:10.3390/molecules22122143

Novel Carbazole Skeleton-Based Photoinitiators for LED Polymerization and LED Projector 3D Printing

1
Institute of Science and Materials of Mulhouse IS2M—UMR, The National Center for Scientific Research (CNRS) 7361—UHA, 15, Rue Jean Starcky, 68057 Mulhouse CEDEX, France
2
Laboratory of Materials, Catalysts, Environment and Analytical Methods (MCEMA-CHAMSI), EDST, Lebanese University, Campus Hariri, Hadath, Beyrouth, Lebanon
3
Institut de Chimie Radicalaire—CNRS, Aix-Marseille University, UMR 7273, F-13397 Marseille, France
4
Laboratory of Physico-chemistry of Polymers and Interfaces LPPI, University of Cergy-Pontoise, 5 Mail Gay Lussac, Neuville-sur-Oise, 95031 Cergy-Pontoise CEDEX, France
*
Authors to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 27 November 2017 / Accepted: 30 November 2017 / Published: 4 December 2017
(This article belongs to the Special Issue Radical Chemistry)
View Full-Text   |   Download PDF [4354 KB, uploaded 5 December 2017]   |  

Abstract

Radical chemistry is a very convenient way to produce polymer materials. Here, an application of a particular photoinduced radical chemistry is illustrated. Seven new carbazole derivatives Cd1Cd7 are incorporated and proposed as high performance near-UV photoinitiators for both the free radical polymerization (FRP) of (meth)acrylates and the cationic polymerization (CP) of epoxides utilizing Light Emitting Diodes LEDs @405 nm. Excellent polymerization-initiating abilities are found and high final reactive function conversions are obtained. Interestingly, these new derivatives display much better near-UV polymerization-initiating abilities compared to a reference UV absorbing carbazole (CARET 9H-carbazole-9-ethanol) demonstrating that the new substituents have good ability to red shift the absorption of the proposed photoinitiators. All the more strikingly, in combination with iodonium salt, Cd1Cd7 are likewise preferred as cationic photoinitiators over the notable photoinitiator bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide (BAPO) for mild irradiation conditions featuring their remarkable reactivity. In particular their utilization in the preparation of new cationic resins for LED projector 3D printing is envisioned. A full picture of the included photochemical mechanisms is given. View Full-Text
Keywords: cationic polymerization; free radical polymerization; light emitting diodes (LEDs); photoinitiators; 3D printing cationic polymerization; free radical polymerization; light emitting diodes (LEDs); photoinitiators; 3D printing
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Al Mousawi, A.; Garra, P.; Dumur, F.; Bui, T.-T.; Goubard, F.; Toufaily, J.; Hamieh, T.; Graff, B.; Gigmes, D.; Fouassier, J.P.; Lalevée, J. Novel Carbazole Skeleton-Based Photoinitiators for LED Polymerization and LED Projector 3D Printing. Molecules 2017, 22, 2143.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top