Laser-induced formation of “craters” and “hills” in azobenzene-containing polymethacrylate films

0533000 - FZÚ 2021 RIV GB eng J - Journal Article
Bobrovsky, A. - Mochalov, K. - Solovyeva, D. - Shibaev, V. - Cigl, Martin - Hamplová, Věra - Bubnov, Alexej
Laser-induced formation of “craters” and “hills” in azobenzene-containing polymethacrylate films.
Soft Matter. Roč. 16, č. 23 (2020), s. 5398-5405. ISSN 1744-683X. E-ISSN 1744-6848
R&D Projects: GA ČR GA19-03564S; GA MŠMT LTC19051
Grant - others:EU - ICT(XE) COST Action CA17139
Institutional support: RVO:68378271
Keywords : azobenzene moiety * liquid crystalline photo-responsive films * control of topology * functional polymethacrylate * contactless manipulation with matter
OECD category: Nano-materials (production and properties)
Impact factor: 3.679, year: 2020
Method of publishing: Limited access
https://doi.org/10.1039/d0sm00601g

Functional organic macromolecular materials with an ability to change their topology in response to external contactless stimuli, like light irradiation, attracts considerable attention. This work is devoted to contactless control of the surface topology and formation of the surface features in the amorphousized and liquid crystalline films of two azobenzene-containing polymers. The investigated polymers are based on methacrylate polymeric backbone and side-chains containing the azobenzene chromophores with two lateral methyl substituents in ortho-positions. Irradiation of the polymethacrylate films by focused polarized light of green (532 nm) and red (633 nm) lasers induces a specific photodeformation of the films surface. In the case of the green light formation of the “craters” having anisotropic borders was found, whereas for the red light highly asymmetric “hills” were observed. The possible mechanisms of the surface topology feature and formation are discussed.

Permanent Link: http://hdl.handle.net/11104/0311503