Léo Niederst, Xavier Allonas, Christian Ley, Issei Takahashi
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引用次数: 0
Abstract
In this paper, a new kind of redox additive usable in photocyclic initiating systems for radical photopolymerization is presented. Di-toluene-4-sulfonamide is shown to act as a quite efficient candidate as electron acceptor due to its high reduction potential. Its effectiveness as an electron acceptor in UV to near-IR Type III photoinitiating systems for radical photopolymerization is demonstrated by interaction with three different dyes. Its implementation into type III photoinitiators leads to a two-fold enhancement of the polymerization rate. An exhaustive photochemical study is conducted giving a thorough description of the chemical reactions, demonstrating a photocatalytic cycle in the type III photoinitiating system for two of the dyes and the ability of the di-toluene-4-sulfonamide to enhance near IR sensitivity.
期刊介绍：
JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds.
All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor).
The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.
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