Mesoporous Graphitic Carbon Nitride as a Heterogeneous Visible Light Photoinitiator for Radical Polymerization

Baris Kiskan; Jinshui Zhang; Xinchen Wang; Markus Antonietti; Yusuf Yagci

doi:10.1021/mz300116w

Mesoporous Graphitic Carbon Nitride as a Heterogeneous Visible Light Photoinitiator for Radical Polymerization

ACS Macro Lett. 2012 May 15;1(5):546-549. doi: 10.1021/mz300116w. Epub 2012 Apr 11.

Authors

Baris Kiskan^{1

2}, Jinshui Zhang^{1

3}, Xinchen Wang^{1

3}, Markus Antonietti¹, Yusuf Yagci^{1

2}

Affiliations

¹ Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany.
² Department of Chemistry, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
³ Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, 350002, Fuzhou, China.

PMID: 35607058
DOI: 10.1021/mz300116w

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.