Exploiting the versatile alkyne-based chemistry for expanding the applications of a stable triphenylmethyl organic radical on surfaces†,Chemical Science

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Exploiting the versatile alkyne-based chemistry for expanding the applications of a stable triphenylmethyl organic radical on surfaces†
Chemical Science ( IF 9.969 ) Pub Date : 2023-02-15 , DOI: 10.1039/c9sc04499j
J. Alejandro de Sousa, Francesc Bejarano, Diego Gutiérrez, Yann R. Leroux, Ewa Malgorzata Nowik-Boltyk, Tobias Junghoefer, Erika Giangrisostomi, Ruslan Ovsyannikov, Maria Benedetta Casu, Jaume Veciana, Marta Mas-Torrent, Bruno Fabre, Concepció Rovira, Núria Crivillers

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.

更新日期：2020-01-06

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