Influence of gold nanoparticles in polymer nanocomposite on space-temporal-irradiation dependent diffraction grating recording

• Published in: Polymer (Guilford) Vol. 214; p. 123240
• Main Authors: Burunkova, J.A., Alkhalil, D., Svjazhina, D.S., Bonyár, A., Csarnovics, I., Kokenyesi, S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.02.2021; Elsevier BV
• Subjects: Broadband; Decomposition reactions; Diffraction gratings; Fabrication; Gold; Gold nanoparticles; Gratings (spectra); Initiators; Irradiation; Mass transport; Nanocomposites; Nanoparticles; Photodecomposition; Photopolymerization; Photopolymerization processes; Plasmon fields; Polymer nanocomposite; Polymers; R&D; Radiation; Recording; Research & development; Silicon oxide; Silicon oxides; Wavelengths; Diffraction gratings; Plasmon fields; Polymer nanocomposite; Gold nanoparticles; Photopolymerization processes
• ISSN: 0032-3861; 1873-2291
• DOI: 10.1016/j.polymer.2020.123240

Following the modern and extremely useful direction of research and development of polymer nanocomposites with combined effects of photopolymerization superimposed by plasmon-induced processes, we investigated acrylate-based nanocomposites with broadband sensitive Irgaqure784 initiator and silicon oxide as well as gold nanoparticles in different regimes of illumination. The details of initiator photodecomposition and polymer chain formation mechanisms at the presence of the gold nanoparticles' (GNPs) plasmon fields and different combinations of irradiation wavelengths or intensities are discussed. These are related to the mechanism and efficiency of holographic volume and surface grating recording based on photopolymerization and mass-transport, diffusion processes of the organic matrix, and nanoparticles. GNP's presence in a monomer nanocomposite influences the recording parameters in a combined way, making preferable the double-wavelength irradiation mode, which may increase the efficiency of the recorded gratings up to two times at decreased exposures. Results may be used for planning fabrication processes of more complex, multifunctional photonic elements. [Display omitted] •Acrylate-based nanocomposites with Irgaqure784 initiator, silicon oxide and gold nanoparticles were created.•Combined effects of photo-polymerization in different regimes of illumination was studied and analyzed.•The presence of gold nanoparticles influences the holographic grating formation, and this depends on recording parameters in a combined way.•The recording in (442+532 nm) regime always results in higher diffraction efficiency and amplitude in comparison with irradiation modes.•Introduction of gold nanoparticles regulates: initialization, chain growth, polymerization rate, and interdiffusion of the components.