Azo-polymers photofluidisation - a transient state of matter emulated by molecular motors

Hurduc, N., Donose, B. C., Rocha, L., Ibanescu, C. and Scutaru, D. (2016) Azo-polymers photofluidisation - a transient state of matter emulated by molecular motors. RSC Advances, 6 32: 27087-27093. doi:10.1039/c6ra03842e


Author Hurduc, N.
Donose, B. C.
Rocha, L.
Ibanescu, C.
Scutaru, D.
Title Azo-polymers photofluidisation - a transient state of matter emulated by molecular motors
Journal name RSC Advances   Check publisher's open access policy
ISSN 2046-2069
Publication date 2016-03-14
Sub-type Article (original research)
DOI 10.1039/c6ra03842e
Open Access Status Not Open Access
Volume 6
Issue 32
Start page 27087
End page 27093
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2017
Language eng
Formatted abstract
The generation of nanostructured azo-polymer films upon interaction with light of a certain wavelength was reported for the first time more than two decades ago. Despite continuous efforts the mechanism governing structuration remains under debate. In the present paper we propose a new phenomenological model of inscription based on a particular state of matter induced by continuous laser irradiation. The continuous trans–cis–trans motion of azo-segments, resembling molecular motors, induces polymer chain displacement (flowing) even when the irradiated polymer has a very high viscosity. Film surface deformation is the result of two simultaneous processes, one or the other being dominant, as a function of the operational conditions and the azo-polymer chemical structure; the first process, is irreversible and based on the azobenzene molecular motor action leading to polymeric chain displacement (flow) and the second one, is reversible and an elastic deformation induced by the Weigert effect.
Keyword Azobenzene polymer
Molecular motors
AFM
Photofluidisation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Created: Tue, 15 Mar 2016, 19:06:14 EST by Dr Bogdan Donose on behalf of School of Chemical Engineering