Browsing by Author "Lehn, Jean-Marie"
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Item A Photochemical and Electrochemical Triggered Bis(hydrazone) Switch(Chemistry - A European Journal, 2017) Gordillo, Mónica A.; Soto-Monsalve, Mónica; Carmona-Vargas, Christian C.; Gutierrez, Gustavo; D'vries, Richard F.; Lehn, Jean-Marie; Chaur, Manuel N.Herein, we report the synthesis of a double hydrazone capable of undergoing photochemical E/Z isomerization through the imine double bonds. The bis(hydrazone) 1-E,E can be considered as a ""two-arm"" system in which the controlled movement of each arm is obtained by photo-modulation, making possible the appearance of two isolable metastable isomeric states 1-E,Z and 1-Z,Z. Such states are characterized by very specific structural, optical and electrochemical properties. The latter, allows the reversible return from either 1-E,Z or 1-Z,Z to the 1-E,E state. Our results are of great importance in the further development of molecular machines and photochemically controlled reactions by introducing for the first time double hydrazones as tunable photochemical switches.