Increase of SRG modulation depth in azopolymers-nanoparticles hybrid materials
Source abstract
Abstract
Thin films of azopolymer-nanoparticles hybrid materials were fabricated with poly[1-[4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido]-1,2-ethanediyl] (PAZO) and different concentrations of Ag and AgAu nanoparticles (NPs). By illuminating the films with polarized interference patterns, surface relief gratings (SRGs) were recorded. It was found that for some concentrations of NPs their modulations and diffraction efficiency were higher than the obtained for PAZO films without NPs. The effect was mainly explained by the increase of the free volume available for the photoisomerization for certain concentrations of NPs. The dependence of the diffraction efficiency on concentration was directly related to changes in modulation depth. When doping with NPs, the maximum efficiency increases more than two times the efficiency without NPs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Liquid Crystal Research Advancements · Synthesis and properties of polymers · Optical Coatings and Gratings
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Hierarchy of hybrid materials—the place of inorganics-in-organics in it, their composition and applications10.3389/fchem.2019.00179 ↗
2. Visible-Light-Responsive azopolymers with inhibited π-π stacking enable fully reversible photopatterning10.1021/acs.macromol.6b01367 ↗
3. Azopolymer‐based micro‐ and nanopatterning for photonic applications10.1002/polb.23390 ↗
4. Azopolymer‐Based nanoimprint lithography: recent developments in methodology and applications10.1002/cplu.202000495 ↗
5. All-optical switching using supramolecular chiral structures in azopolymers10.1088/1464-4258/10/11/115006 ↗
6. Azopolymer film as an actuator for organizing multiwall carbon nanotubes10.1016/j.optmat.2017.01.047 ↗
7. Nanoparticle organization through photoinduced bulk mass transfer10.1021/la404988d ↗
8. Influence from the free volume on the photoinduced birefringence in azocompound-containing polymers10.1021/ma052604z ↗
9. Functional surfaces through the creation of adhesion and charged patterns on azopolymer surface relief gratings10.1016/j.optmat.2019.02.036 ↗
10. Optical patterning in azobenzene polymer films10.1111/j.1365-2818.2005.01500.x ↗
11. A comparative study of photoinduced deformation in azobenzene containing polymer films10.1039/C6SM00029K ↗
12. Mechanism of optically inscribed high-efficiency diffraction gratings in azo polymer films10.1021/jp953300p ↗
13. Generic stochastic Monte Carlo model of the photoinduced mass transport in azo-polymers and fine structure of Surface Relief Gratings10.1209/0295-5075/105/26002 ↗
14. Ultrapermeable, reverse-selective nanocomposite membranes10.1126/science.1069580 ↗
15. Photoinduced birefringence in azopolymer doped with Au nanoparticles10.1088/1742-6596/1310/1/012018 ↗
16. Effect of silver nanoparticles on photo-induced reorientation of azo groups in polymer films10.1016/j.tsf.2007.02.091 ↗
17. Localized surface plasmon resonance effect on photo-induced alignment of films composed of silver nanoparticles and azopolymers with cyano or methyl substitutes on azobenzene moieties10.1016/j.tsf.2009.07.141 ↗
18. Anisotropic hybrid organic/inorganic (azopolymer/SiO2 NP) materials with enhanced photoinduced birefringence10.1364/AO.52.000E28 ↗
19. Surface enhanced visible absorption of dye molecules in the near-field of gold nanoparticles10.1038/s41598-020-60839-0 ↗
20. Improvement of the photoinduced birefringence in azopolymer PAZO doped with TiO2 nanoparticles via thermal treatment
21. Influence of the size of nanoparticles doped in series of azopolymers on the photoinduced birefringence10.1117/12.2013646 ↗
22. Polarization holographic recording in thin films of pure azopolymer and azopolymer based hybrid materials10.1016/j.optmat.2016.12.002 ↗
23. Holographic manipulation of nanoparticle distribution morphology in nanoparticle-dispersed photopolymers10.1364/OL.30.000839 ↗
24. Reversible cis–trans isomerization of a single azobenzene molecule10.1002/anie.200502229 ↗
25. Birefringence grating and surface relief grating on an azo polymer
26. Optical constants of azopolymer PAZO thin films in the spectral range 320 – 800 nm