Garcia-Amorós Jaume, Martínez Manuel, Finkelmann Heino, Velasco Dolores
Grup de Materials Orgànics, Departament de Química Orgànica, Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1, E-08028, Barcelona, Spain.
Phys Chem Chem Phys. 2014 May 14;16(18):8448-54. doi: 10.1039/c4cp00446a.
4-Alkoxy-4'-cyanoazobenzenes are organic chromophores with great applicability within present nanotechnology. However, the use of such azo dyes for obtaining light-triggered artificial muscle-like actuators remains still unexplored. Achieving further knowledge about the thermal back reaction and isomerisation mechanism for these types of azoderivatives is essential to get photo-actuators with the desired abilities. Despite the push-pull nature of the 4-alkoxy-4'-cyanoazobenzene chromophore, it has been experimentally demonstrated that it isomerises via an inversion mechanism. The opto-mechanics of the prepared elastomeric material has also been investigated. For this system, a maximum opto-mechanical response of ca. 2.5 kPa has been registered, which is independent of the working temperature of the photoactuator.
4-烷氧基-4'-氰基偶氮苯是在当前纳米技术中有广泛应用的有机发色团。然而，将此类偶氮染料用于制备光触发的类人工肌肉致动器仍未得到探索。深入了解这些偶氮衍生物的热逆反应和异构化机制对于获得具有所需性能的光致动器至关重要。尽管4-烷氧基-4'-氰基偶氮苯发色团具有推挽性质，但实验表明它通过反转机制进行异构化。还研究了制备的弹性体材料的光力学性能。对于该系统，已记录到约2.5 kPa的最大光力学响应，这与光致动器的工作温度无关。
