s-Heptazine oligomers: promising structural models for graphitic carbon nitride

Adrien Zambon (1, 2, 3, 4) , Jean-Marie Mouesca (3) , C. Gheorghiu (3) , Pierre-Alain Bayle (3) , Jacques Pecaut (1, 4) , M. Claeys-Bruno (5) , Serge Gambarelli (3) , Lionel Dubois (1, 4)

1 RICC - Reconnaissance Ionique et Chimie de Coordination
2 LISA - Laboratoire d'Instrumentation et Sciences Analytiques
3 RM - Magnetic Resonance
4 INAC - Institut Nanosciences et Cryogénie
5 ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie

Graphitic carbon nitride (g-CN) has interesting catalytic properties but is difficult to study due to its structure and how it is produced. In this study, linear s-heptazine oligomers were synthesized to serve as well-defined molecular models for g-CN. Cyclic voltammetry, absorption and emission spectroscopies showed a clear shift of properties towards those of g-CN as the number of heptazine units increased. DFT calculations supported the characterizations, and helped refine the properties observed.

Mots clés: Cyameluric Acid; Solid-State NMR; Effective Conjugation Length; Nanosheets; Catalysis

Domaines: Physique [physics]

Adrien Zambon, Jean-Marie Mouesca, C. Gheorghiu, Pierre-Alain Bayle, Jacques Pecaut, et al.. s-Heptazine oligomers: promising structural models for graphitic carbon nitride. Chemical Science, 2016, 7 (2), pp.945-950. ⟨10.1039/c5sc02992a⟩. ⟨cea-01851932⟩