Open AccessInvestigation of surface relief gratings on azo-copolyimide films using atomic force microscopy
Author(s) -
Ion Sava,
Iuliana Stoica,
Ilarion Mihăilă,
Ionuț Topală
Publication year - 2021
Publication title -
revue roumaine de chimie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.135
H-Index - 21
ISSN - 0035-3930
DOI - 10.33224/rrch.2021.66.2.10
Subject(s) - azobenzene , materials science , atomic force microscopy , polymer chemistry , irradiation , chemical engineering , condensation polymer , composite material , polymer , nanotechnology , physics , nuclear physics , engineering
Azo-copolyimide films were explored regarding the surface relief gratings formation under the action of pulsatory laser irradiation. The azo-copolyimides have been synthesized by the polycondensation reaction of benzophenonetetracarboxylic dianhydride and a mixture of two diamines, one of which contains substituted phenyl groups and the other one contains two pendent substituted azobenzene group, taken in the molar ratio 3 : 1, respectively. Atomic force microscopy was used to investigate the surface relief gratings characteristics in different conditions and for different structures of the azo-copolyimide films.