On-Surface Carbon Nitride Growth from Polymerization of 2,5,8-Triazido-s-heptazine
© 2023 The Authors. Published by American Chemical Society.
Veröffentlicht in: | Chemistry of materials : a publication of the American Chemical Society. - 1998. - 35(2023), 17 vom: 12. Sept., Seite 6762-6770 |
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1. Verfasser: | |
Weitere Verfasser: | , , , , , , , , , |
Format: | Online-Aufsatz |
Sprache: | English |
Veröffentlicht: |
2023
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Zugriff auf das übergeordnete Werk: | Chemistry of materials : a publication of the American Chemical Society |
Schlagworte: | Journal Article |
Zusammenfassung: | © 2023 The Authors. Published by American Chemical Society. Carbon nitrides have recently come into focus for photo- and thermal catalysis, both as support materials for metal nanoparticles as well as photocatalysts themselves. While many approaches for the synthesis of three-dimensional carbon nitride materials are available, only top-down approaches by exfoliation of powders lead to thin-film flakes of this inherently two-dimensional material. Here, we describe an in situ on-surface synthesis of monolayer 2D carbon nitride films as a first step toward precise combination with other 2D materials. Starting with a single monomer precursor, we show that 2,5,8-triazido-s-heptazine can be evaporated intact, deposited on a single crystalline Au(111) or graphite support, and activated via azide decomposition and subsequent coupling to form a covalent polyheptazine network. We demonstrate that the activation can occur in three pathways, via electrons (X-ray illumination), via photons (UV illumination), and thermally. Our work paves the way to coat materials with extended carbon nitride networks that are, as we show, stable under ambient conditions |
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Beschreibung: | Date Revised 21.09.2023 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
ISSN: | 0897-4756 |
DOI: | 10.1021/acs.chemmater.3c01030 |