Epitaxial growth of light-responsive azobenzene molecular crystal actuators on oriented polyethylene films

Shaji Varghese; Sebastian Fredrich; Ghislaine Vantomme; Sugosh R. Prabhu; Joan Teyssandier; Steven De Feyter; John Severn; Cees W. M. Bastiaansen; Albertus P. H. J. Schenning

doi:10.1039/C9TC05407C

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Epitaxial growth of light-responsive azobenzene molecular crystal actuators on oriented polyethylene films†

Shaji Varghese,

*^a Sebastian Fredrich,

^a Ghislaine Vantomme,

^b Sugosh R. Prabhu,

^c Joan Teyssandier,

^c Steven De Feyter,

^c John Severn,^ad Cees W. M. Bastiaansen^ae and Albertus P. H. J. Schenning

*^ab

Author affiliations

* Corresponding authors

^a Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
E-mail: shaji_varghese@fas.harvard.edu, A.P.H.J.Schenning@tue.nl

^b Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

^c Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, Belgium

^d DSM Materials Science Center, NL-6160 MD Geleen, The Netherlands

^e School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road London, London, UK

Abstract

We report on the epitaxial growth of photoresponsive alkyl-substituted azobenzene fibres on top of uniaxially oriented polyethylene (PE) films. In these fibres, the alkyl chains are oriented parallel with regard to the drawing direction of PE, whereas the azobenzene moieties pack into a roughly 60° angle. The bilayer films act as a light responsive actuator generating an actuation stress of about 3 MPa.

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Article information

DOI: https://doi.org/10.1039/C9TC05407C
Article type: Paper
Submitted: 02 Oct 2019
Accepted: 29 Nov 2019
First published: 09 Dec 2019
This article is Open Access

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J. Mater. Chem. C, 2020,8, 694-699

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Epitaxial growth of light-responsive azobenzene molecular crystal actuators on oriented polyethylene films

S. Varghese, S. Fredrich, G. Vantomme, S. R. Prabhu, J. Teyssandier, S. De Feyter, J. Severn, C. W. M. Bastiaansen and A. P. H. J. Schenning, J. Mater. Chem. C, 2020, 8, 694 DOI: 10.1039/C9TC05407C

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Journal of Materials Chemistry C

Epitaxial growth of light-responsive azobenzene molecular crystal actuators on oriented polyethylene films†

Abstract

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Epitaxial growth of light-responsive azobenzene molecular crystal actuators on oriented polyethylene films

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