Journal ArticleDOI
Mesoporous Graphitic Carbon Nitride as a Heterogeneous Visible Light Photoinitiator for Radical Polymerization
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TLDR
In this paper, the use of mesoporous graphitic carbon nitride (mpg-C3N4) in conjunction with tertiary amines as initiators in visible-light-induced free radical polymerization is described.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.read more
Citations
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Photoorganocatalysis. What for
TL;DR: Oxidation (mainly oxygenation and reduction processes are obtained along with the α-functionalization of amines and ketones, conjugate additions, cycloadditions etc).
Journal ArticleDOI
Graphitic carbon nitride “reloaded”: emerging applications beyond (photo)catalysis
TL;DR: This review starts with the general protocols to engineer g-C3N4 micro/nanostructures for practical use, and discusses the newly disclosed applications in sensing, bioimaging, novel solar energy exploitation including photocatalytic coenzyme regeneration, templating, and carbon nitride based devices.
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Photoinduced Electron Transfer Reactions for Macromolecular Syntheses
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Journal ArticleDOI
Crystalline Carbon Nitride Nanosheets for Improved Visible-Light Hydrogen Evolution
Katharina Schwinghammer,Katharina Schwinghammer,Maria B. Mesch,Viola Duppel,Christian Ziegler,Christian Ziegler,Christian Ziegler,Jürgen Senker,Bettina V. Lotsch,Bettina V. Lotsch,Bettina V. Lotsch +10 more
TL;DR: PTI nanosheets show significantly enhanced visible-light driven photocatalytic activity toward hydrogen evolution compared to their bulk counterpart, which highlights the crucial role of morphology and surface area on the photocatallytic performance of carbon nitride materials.
Journal ArticleDOI
Photocatalysis in organic and polymer synthesis
TL;DR: This review, with over 600 references, summarizes the recent applications of photoredox catalysis for organic transformation and polymer synthesis to give an overview of this emerging field to organic and polymer chemists as well as materials scientists.
References
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Journal ArticleDOI
A metal-free polymeric photocatalyst for hydrogen production from water under visible light
Xinchen Wang,Kazuhiko Maeda,Arne Thomas,Kazuhiro Takanabe,Gang Xin,Johan M. Carlsson,Kazunari Domen,Markus Antonietti +7 more
TL;DR: It is shown that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor.
Journal ArticleDOI
Merging Photoredox Catalysis with Organocatalysis: The Direct Asymmetric Alkylation of Aldehydes
TL;DR: The enantioselective intermolecular α-alkylation of aldehydes has been accomplished using an interwoven activation pathway that combines both the photoredox catalyst Ru(bpy)3Cl2 and an imidazolidinone organocatalyst.
Journal ArticleDOI
Polymer semiconductors for artificial photosynthesis: hydrogen evolution by mesoporous graphitic carbon nitride with visible light.
Xinchen Wang,Kazuhiko Maeda,Xiufang Chen,Kazuhiro Takanabe,Kazunari Domen,Yidong Hou,Xianzhi Fu,Markus Antonietti +7 more
TL;DR: It is shown that the efficiency of hydrogen production by photochemical water reduction can be improved by approximately 1 order of magnitude by introducing the right type of mesoporosity into polymeric C(3)N(4).
Journal ArticleDOI
Photoinitiated Polymerization: Advances, Challenges, and Opportunities
TL;DR: The use of photoinitiated polymerization is continuously growing in industry as reflected by the large number of applications in not only conventional areas such as coatings, inks, and adhesives but also high-tech domains, optoelectronics, laser imaging, stereolithography, and nanotechnology as mentioned in this paper.
Journal ArticleDOI
Fe-g-C3N4-Catalyzed Oxidation of Benzene to Phenol Using Hydrogen Peroxide and Visible Light
TL;DR: A bioinspired iron-based catalyst with semiconductor photocatalytic functions in combination with a high surface area holds promise for synthetic chemistry via combining photocatalysis with organosynthesis through using g-C(3)N(4) nanoparticles.
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