Is carboxylation an efficient method for graphene oxide functionalization?
| Autor: | Jésus Raya, Shi Guo, Ding-Kun Ji, Alberto Bianco, Yuta Nishina, Cécilia Ménard-Moyon |
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| Přispěvatelé: | Immunopathologie et chimie thérapeutique (ICT), Centre National de la Recherche Scientifique (CNRS)-Institut de biologie moléculaire et cellulaire (IBMC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Research areas
Chloroacetic acid Oxide Epoxide Bioengineering 02 engineering and technology [CHIM.THER]Chemical Sciences/Medicinal Chemistry 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law [CHIM]Chemical Sciences General Materials Science epoxide ring opening magic angle spinning NMR ComputingMilieux_MISCELLANEOUS Graphene multifunctionalisation General Engineering General Chemistry 021001 nanoscience & nanotechnology 2D materials Combinatorial chemistry Atomic and Molecular Physics and Optics 0104 chemical sciences chemistry Carboxylation Sodium hydroxide Surface modification Carbon nanomaterials 0210 nano-technology |
| Zdroj: | Nanoscale Advances Nanoscale Advances, RSC, 2020, 2 (9), pp.4085-4092. ⟨10.1039/d0na00561d⟩ |
| ISSN: | 2516-0230 |
| Popis: | Graphene oxide (GO) is one of the most popular materials applied in different research areas thanks to its unique properties. The application of GO requires well-designed protocols to introduce different functionalities on its surface, exploiting the oxygenated groups already present. Due to the complex and unstable chemical environment on the GO surface, it is recommended to perform the functionalization under mild conditions. The carboxylation of GO is a widely used method to introduce additional carboxylic acids, which could be further modified through amidation or esterification reactions. The strategy already reported in the literature requires harsh conditions (excess amount of sodium hydroxide). GO is readily reduced under basic conditions, but the reduction of GO during the carboxylation is barely studied. In this work, we performed the carboxylation using chloroacetic acid with different amounts of sodium hydroxide and characterized the functionalized GO with various techniques. The carboxylated GO was exploited to develop a double functionalization approach combining an epoxide ring opening reaction and an amidation. The results showed that strong basic conditions were necessary to derivatize GO. Nevertheless, these conditions resulted in a partial reduction of GO and some functionalities on GO were removed during the reaction, thus reducing the total efficiency of the functionalization in comparison to an epoxide ring opening reaction, indicating that carboxylation is not an efficient approach for the functionalization of GO. |
| Databáze: | OpenAIRE |
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