Exploiting the versatile alkyne-based chemistry for expanding the applications of a stable triphenylmethyl organic radical on surfaces† †Electronic supplementary information (ESI) available: Synthetic details and characterization of the prepared compounds, details of the preparation of SAMs on Si–H and on Au, additional electrochemical characterization of SAMs, survey and XPS spectra of SAM-3-Rad and SAM-2-Rad together with their stoichiometric and experimental elemental ratios and instrumentation. See DOI: 10.1039/c9sc04499j
| Autor: | de Sousa, J. Alejandro, Bejarano, Francesc, Gutiérrez, Diego, Leroux, Yann R., Nowik-Boltyk, Ewa Malgorzata, Junghoefer, Tobias, Giangrisostomi, Erika, Ovsyannikov, Ruslan, Casu, Maria Benedetta, Veciana, Jaume, Mas-Torrent, Marta, Fabre, Bruno, Rovira, Concepció, Crivillers, Núria |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Chemical Science |
| ISSN: | 2041-6539 2041-6520 |
| Popis: | Triphenylmethyl organic radicals functionalized with terminal alkyne groups open new avenues for their implementation as multifunctional surfaces. The incorporation of terminal alkynes into the chemical structure of persistent organic perchlorotriphenylmethyl (PTM) radicals provides new chemical tools to expand their potential applications. In this work, this is demonstrated by the chemical functionalization of two types of substrates, hydrogenated SiO2-free silicon (Si–H) and gold, and, by exploiting the click chemistry, scarcely used with organic radicals, to synthesise multifunctional systems. On one hand, the one-step functionalization of Si–H allows a light-triggered capacitance switch to be successfully achieved under electrochemical conditions. On the other hand, the click reaction between the alkyne-terminated PTM radical and a ferrocene azide derivative, used here as a model azide system, leads to a multistate electrochemical switch. The successful post-surface modification makes the self-assembled monolayers reported here an appealing platform to synthesise multifunctional systems grafted on surfaces. |
| Databáze: | OpenAIRE |
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