Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 16, Issue 18, Pages 8448-8454Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp00446a
Keywords
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Funding
- European project: Functional Liquid-Crystalline Elastomers [FULCE-HPRN-CT-2002-00169]
- Ministerio de Ciencia e Innovacion (Spain) [CTQ-2012-36074, CTQ2012-37821-C02-01]
- Beatriu de Pinos post-doctoral grant from the Generalitat de Catalunya (Spain) [2011 BP-A-00270]
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4-Alkoxy-4'-cyanoazobenzenes are organic chromophores with great applicability within present nano-technology. 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.
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