Pyrrole-Embedded Linear and Helical Graphene Nanoribbons
| Autor: | Mirella Del Zoppo, Andrea Lucotti, Frédéric Lirette, Jean-François Morin, Dandan Miao, Félix Gagnon, Matteo Tommasini, Cyril Aumaitre, Vanessa Di Michele |
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| Přispěvatelé: | Département de Chimie, Université Laval, Université Laval [Québec] (ULaval), Dipartimento di Chimica, Materiali ed Ingegneria Chimica 'G. Natta', Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Band gap
Conductivity 010402 general chemistry Polypyrrole 01 natural sciences Biochemistry Catalysis Fluorescence chemistry.chemical_compound Colloid and Surface Chemistry Chemical structure Chemical-mechanical planarization Photochemical reactions Photochemical reactions Fluorescence Pyrroles Chemical structure Electrical conductivity Electrical conductivity [CHIM]Chemical Sciences Pyrroles Thin film Pyrrole chemistry.chemical_classification 010405 organic chemistry General Chemistry Polymer 0104 chemical sciences chemistry Physical chemistry Graphene nanoribbons |
| Zdroj: | Journal of the American Chemical Society Journal of the American Chemical Society, American Chemical Society, 2021, 143 (30), pp.11302-11308. ⟨10.1021/jacs.1c05616⟩ |
| ISSN: | 0002-7863 1520-5126 |
| DOI: | 10.1021/jacs.1c05616⟩ |
| Popis: | International audience; Linear and helical graphene nanoribbons (L-PyGNR and H-PyGNR) bearing electron-rich pyrrole units have been synthesized by using the photochemical cyclodehydrochlorination (CDHC) reaction. The pyrrole units in the polymer backbone make the polymer electron-rich with moderate bandgap values and relatively high HOMO energy levels. The planarization of the pyrrole unit through cyclization yields a bandgap value almost 0.5 eV lower than that measured for polypyrrole. Conductivity values in the thin film up to 0.12 S/cm were measured for the chemically oxidized L-PyGNR (four-point method). Both GNRs showed excellent fluorescence sensing properties for TNT in solution with K SV values up to 6.4 × 10 6 M −1 . |
| Databáze: | OpenAIRE |
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