Multifunctional azopoly(ether imide)s generating efficient optical birefringence, relief gratings, photomechanical effect. Application in photo-controlled ON/OFF switching of electric circuit and as an alignment layer in LC cells

The dataset includes files:• 1H NMR in DMSO-d6 and FTIR in KBr pellets for new polyimide PI-2.• Studies of thermal properties for PI-2 (DSC, TGA).• Molecular weight measurements for pI-1 and PI-2 (GPC).• Thermal cis-trans isomerization in the solid-state for azopolyimides (PI-1 and PI-2). The 405 nm diode laser (I= 100 mW/cm2) generated the cis-isomers.• AFM measurements of the coated aluminum surface.• Photoinduced birefringence for PI-1 generated by a 405nm laser light ( I= 100mW/cm2).• Photomechanical effect generated for PI-1 foil and PI-1 coated with aluminum (generated by 405 nm diode-laser, I= 100 mW/cm2) showed as the photographs.• Photocontrolled ON/OFF switching of electrical circuits based on the photomechanical effect of azopolyimide PI-1 (film mp4).• The modulation of the surface profile for PI-2. The grating was inscribed using coherent excitation light from a 442 nm He-Cd laser. In the arranged geometry, the two beams crossed on the polymer layer at 2.7°. The intensity of each 442 nm beam at the sample plane was ca. 100 mW/cm2.Inscription of attached files:1HNMR_sample - 1H NMR measurementsFTIR_sample - FTIR measurementsDSC_sample - DSC measurementsTGA_sample - TGA measurementsGPC_sample - GPC measurementsx-ray_sample - x-ray measurementsAFM_sample - AFM measurementsUV_sample - UV-vis measurements included photoisomerizationabs_sample - photoisomerization studiesBirefringence_sample - Photoinduced birefringence measurementsDiffraction efficiency_sample - Studies of diffraction gratings