Abstract
Photopolymerization and its application in the dental, three-dimensional (3D) printing, coating and electronic industry has become increasingly popular over the last decades. A huge variety of photoinitiators (PIs) and photoinitiating systems (PISs) have been developed that are able to generate reactive species, e. g. radicals, radical cations, and cations upon light absorption. In this Review, we focus on radical-generating Type I PIs which undergo homolytic cleavage after irradiation with visible light. The possibility to utilize electromagnetic irradiation above 400 nm for the initiation of polymerization reactions provides several advantages such as a lower energy demand and higher curing depths in pigmented reactive systems. Recent developments of PIs based on phosphorus and group 14 elements as well as other selected concepts for Type I visible light initiators are outlined and discussed within this review.
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | e202200091 |
| Seitenumfang | 13 |
| Fachzeitschrift | ChemPhotoChem |
| Jahrgang | 6.2022 |
| Ausgabenummer | 11 |
| DOIs | |
| Publikationsstatus | Elektronische Veröffentlichung vor Drucklegung. - 27 Juni 2022 |
Bibliographische Notiz
Funding Information:The authors gratefully acknowledge the financial support of the Montanuniversitaet Leoben, NAWI Graz and FWF (Vienna, Austria; project number P 32606‐N). Part of the research work was performed within the COMET‐Module project ”Chemitecture” (project‐no.: 21647048) in cooperation with the Polymer Competence Center Leoben GmbH (PCCL, Austria) within the framework of the COMET‐program of the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology and the Federal Ministry for Digital Economic Affairs. The PCCL is funded by the Austrian Government and the State Governments of Styria, Upper and Lower Austria.
Publisher Copyright:
© 2022 The Authors. ChemPhotoChem published by Wiley-VCH GmbH.