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Updated: Sep 22, 2025

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Published on: April 22, 2016
Mesoporous Graphitic Carbon Nitride as a Heterogeneous Visible Light Photoinitiator for Radical Polymerization
Baris Kiskan1,2, Jinshui Zhang1,3, Xinchen Wang1,3
1Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany.
Abstract:
The use mesoporous graphitic carbon nitride (mpg-C3N4) in conjunction with tertiary amines as initiators in visible-light-induced free radical polymerization is described. The initiation mechanism involves photoinduced free radical generation by scavenging holes with amines and subsequent hydrogen abstraction. The efficiency of the photoinitiation is controlled by the nature of the amines and specific surface area of the carbon nitride powder. Apparently, amines with higher basicity and available hydrogens provide more favorable conditions for the photoinitiation process. Due to its heterogeneous nature, the photoinitiator preserves its photoinitiation activity after the polymerization and can easily be separated and used for further polymerizations.
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