Very efficient surface relief holographic materials based on azobenzene-containing epoxy resins cured in films

Abstract

An extremely high rate of holographic surface relief grating inscription has been achieved in materials based on a solid state ring-opening reaction of an oxirane with amino substituted azobenzenes. A number of effective formulations based on various oxirane derivatives and different aminoazobenzene derivatives has been prepared. For one of the best formulations, a low molecular weight three-armed azobenzene derivative has been separated in a pure form. This three-armed azobenzene derivative exhibited the highest inscription rate

From partial to complete optical erasure of azobenzene–polymer gratings: effect of molecular weight

“…Illumination of these materials can induce actuation over large length scales, beginning with the molecular-scale photoisomerization process 1,2 and emerging into visually observable macroscopic motions. 4,6,8 These optically tunable patterns can reach a modulation depth of hundreds of nanometers as compared to the flat surface before illumination [9][10][11] and there is a growing interest in applying azobenzene-based diffraction gratings in photonics and micro-/nanofabrication. 4,6,8 These optically tunable patterns can reach a modulation depth of hundreds of nanometers as compared to the flat surface before illumination [9][10][11] and there is a growing interest in applying azobenzene-based diffraction gratings in photonics and micro-/nanofabrication.…”

Современное Состояние Разработки Светочувствительных Сред Для Голографии (Обзор)

“…Рельефные голографические решетки высокого ка-чества были получены в слоях азобензол-содержащих эпоксидных смол XL [147]. Регистрация рельефных и объемных поляризационных голограмм возможна в же-латиновых пленках, содержащих азокраситель [148].…”

Light-Triggered Formation of Surface Topographies in Azo Polymers

“…Here, a ring opening reaction of bisphenol A diglycidyl ether and an azobenzene derivative was performed, leading to a covalent bond of the azobenzenes to the polymeric backbone (Figure 4a). These materials exhibit an extremely high inscription rate (0.45 Goldenberg et al used different cured epoxy resins containing azobenzenes to construct SRGs [52,56]. These epoxy resins allow for a solid state oxirane ring opening polymerization to achieve a polymer film.…”

“…This technique allows for the creation of hierarchical microstructures for new all-optical applications. Goldenberg et al used different cured epoxy resins containing azobenzenes to construct SRGs [52,56]. These epoxy resins allow for a solid state oxirane ring opening polymerization to achieve a polymer film.…”