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Covalent Functionalization of Carbon Nitride Frameworks through Cross‐Coupling Reactions
Author(s) -
Sun Jingwen,
Phatake Ravindra,
Azoulay Adi,
Peng Guiming,
Han Chenhui,
Barrio Jesús,
Xu Jingsan,
Wang Xin,
Shalom Menny
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201803201
Subject(s) - surface modification , covalent bond , exfoliation joint , carbon nitride , catalysis , materials science , photocatalysis , coupling reaction , nitride , graphitic carbon nitride , combinatorial chemistry , carbon fibers , covalent organic framework , chemical modification , chemistry , nanotechnology , chemical engineering , photochemistry , organic chemistry , polymer chemistry , graphene , composite number , layer (electronics) , composite material , engineering
A new and simple synthetic route is introduced to covalently functionalize the carbon nitride (CN) framework by the implementation of halogenated phenyl groups (Cl, Br and I), which serve as a chemically reactive center, within the CN framework. The covalent modification is demonstrated here by substituting phenyl and tert ‐butyl propionate onto the modified‐CN framework through Suzuki and reductive‐Heck cross‐coupling reactions, respectively. The effective functionalization leads to a facile exfoliation of the CN framework into thinner layers and greatly enhances the dispersibility in many solvents as well as the photocatalytic activity compared to the unmodified CN. The general covalent modification opens the possibility for tailor‐made design of dispersible CN materials, including their photophysical and chemical properties, toward their exploitation in many fields, such as photocatalysis, bio‐imaging, sensing, and heterogeneous catalysis.