Effect of dopant on the physical properties of polymer films for microphotonics

UV crosslinking of Fe3+‐doped poly(vinyl alcohol)—Characterization of optical properties and swelling behavior

“…The decrease of absorbance at 360 nm is almost exponential and corresponds to the change of the oxidation state of Fe 3+ to Fe 2+ 1, 2. Additionally, the transmission in the visible range changes significantly and a change of color from yellow to colorless is observed, as reported by Mannivannan et al3 Contrary to published results, no increase of the absorption at wavelengths higher than 450 nm was detected 2, 3, 11, 12.…”

“…Iron(III)chloride doped poly(vinyl alcohol) is a very convenient UV curable organometallic polymer that could be utilized for optical data processing technologies and real time holographic recording. Possible applications are permanent and transient data storage materials and precursors for the fabrication of flexible waveguides 1–5. Besides the optical applications this organometallic polymer may be utilized for high‐temperature coatings, biosensors, storage electrodes for batteries and capacitors, electrochromics, etc 6–10…”

Metal Doped PVA Films for Opto-Electronics-Optical and Electronic Properties, an Overview

“…The final film of doped Fe:PVA, obtained from the mixture of both salt and polymer solutions, contains small groups of Fe ions due to the particular PVA intimate semi-crystalline structure. A direct proof of the aggregation of Fe ions into small clusters of 1–2 nm size (<100 atoms) [ 92 ] is the specific behavior of the temperature dependent Mössbauer spectra of PVA films doped with FeCl 3 . While the Mössbauer spectra (see Figure 4 ) of single molecules of FeCl 3 in PVA should consist of paramagnetic doublets until the lowest temperature of 5 K, the presence of a magnetic spectral component (sextet) at 5 K [ 102 ] gives evidence for the presence of small clusters of Fe 3+ ions with a blocking temperature lower than 50 K. In fact, in many cases the metal compound forms clusters [ 103 ] and so it is always difficult to distinguish the polymers doped with metals from those doped with nanoparticles [ 104 ].…”

“…Many other combinations of metals pairs are possible, for example PVA doped with a CrO 3 +CuO pair induces changes in the morphology of the polymer films and in the electronic charge transfer processes, with direct influences on the optical properties of polymer films, transmittance and refractive index [ 92 ].…”

Effect of nano silicon dioxide on the structure and properties of FeCl3‐doped polyvinyl alcohol photopolymer film

“…Fe(III)‐doped PVA(Fe(III)‐PVA) photopolymer resin is a water soluble, environmentally friendly and UV‐curable polymer system, which does not involve toxic and harmful chemicals in the preparation and processing. Fe(III)‐PVA could be used for determining the diffraction efficiency, optical data processing technologies, real‐time holographic recording medium, electrodes for batteries and capacitors, and high‐temperature coatings. Fe(III)‐PVA is also a potential material for preparing flexographic‐printing plates .…”