A5080580020- Transition Metal Oxide Nanomaterials
- Conducting polymers and applications
- Organometallic Complex Synthesis and Catalysis
- Analytical Chemistry and Sensors
- Crystallography and molecular interactions
- Silicone and Siloxane Chemistry
- Gas Sensing Nanomaterials and Sensors
- Synthesis and characterization of novel inorganic/organometallic compounds
- Perovskite Materials and Applications
- TiO2 Photocatalysis and Solar Cells
- Polyoxometalates: Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Building materials and conservation
- Molecular spectroscopy and chirality
- Organoboron and organosilicon chemistry
- Pigment Synthesis and Properties
- Photochromic and Fluorescence Chemistry
- Organic Electronics and Photovoltaics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Polydiacetylene-based materials and applications
- Photopolymerization techniques and applications
- Aerogels and thermal insulation
- Glass properties and applications
- Spectroscopy and Chemometric Analyses
Fraunhofer Institute for Silicate Research
2012-2023
University of Würzburg
1992-2018
Centre National de la Recherche Scientifique
2010
Institut de Chimie de la Matière Condensée de Bordeaux
2010
Université de Bordeaux
2010
Fraunhofer Society
2002-2003
Abstract Conjugated electrochromic (EC) polymers for flexible EC devices (ECDs) generally lack a fully colorless bleached state. A strategy to overcome this drawback is the implementation of new sidechain‐modified poly(3,4‐ethylene dioxythiophene) derivative that can be deposited in thin‐film form customized high‐throughput and large‐area roll‐to‐roll polymerization process. The sidechain modification provides enhanced properties terms visible light transmittance change, Δτ v = 59% (Δ L*...
Two new multichromophoric electrochromic polymers featuring a conjugated EDOT/ProDOT copolymer backbone (PXDOT) and reversible Weitz‐type redox active small molecule electrochrome (WTE) tethered to the chain are reported here. The careful design of WTEs provides highly behavior with colorless red switching that complements blue backbone. Subtractive color mixing successfully high performing solution processable polymeric layers neutral tint switchable limiting states for application in...
We present the optical, electrochemical, and electrochromic properties of Fe(<sc>ii</sc>)-, Co(<sc>ii</sc>)- Ru(<sc>ii</sc>)-based metallo-supramolecular polymers (MEPEs) self-assembled from rigid, π-conjugated bis-terpyridines with different numbers pyridine linkers.
Abstract Large‐area electrochromic devices (ECDs) based on a cathodically‐coloring, side chain‐modified poly(3,4‐ethylene dioxythiophene) (PEDOT) derivative and anodically‐coloring Prussian blue (PB) are assembled by customized sheet‐to‐sheet (S2S) lamination process. The ECDs with two complementary switching “half‐cells”, flexible PET‐ITO substrates, offer enhanced optical properties in terms of visible light transmission change (4–53%), contrast ratio (CR = 93.4) color neutrality (L* 77.9,...
Despite the long-standing history of electrochromism, there is a lack universally accepted methods for quantitatively comparing cycling stability between different electrochromic materials or devices. By proposing straightforward three-step procedure, we report simple set parameters that describe performance most frequently used materials, namely, conducting polymers, transition metal oxides, metallo-supramolecular and viologens. The main highlights this procedure are an adequate definition...
The cycling stability of flexible electrochromic devices (ECDs) under humid atmospheres is limited by irreversible indium tin oxide (ITO) reduction. A strategy to limit this degradation was developed and tested for model ECDs based on a sidechain-modified poly(3,4-ethylene dioxythiophene) (PEDOT) derivative Prussian blue (PB). This work reveals that the reduced dissolution ITO thin films formation metallic particles surface layers. strongly depends applied electrode potentials in combination...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT(Hydrosilyl)tungsten complexes of the type (C5Me5)(OC)2(Me3P)W-SiR3 (SiR3 = SiH3, SiH2Me, SiHMe2, SiHClMe, SiHCl2): synthesis, crystal structure, and detailed vibrational analysisSiegfried Schmitzer, Udo Weis, Harald Kaeb, Wolfgang Buchner, Malisch, Thomas Polzer, Uwe Posset, KieferCite this: Inorg. Chem. 1993, 32, 3, 303–309Publication Date (Print):February 1, 1993Publication History Published online1 May 2002Published inissue 1 February...
Confocal micro-Raman spectroscopy has been applied for vibrational investigations on a sol-gel derived hybrid polymer coating. In order to characterize the dimensions of focus inside coating, substrate, and coating/substrate, model that considers both refraction diffraction effects developed. A coating ∼20.2 μm thickness polycarbonate substrate investigated. The spatial distribution Raman intensity in focal volume was studied at different depths within sample response corresponding levels...
Polycrystalline tetracalcium phosphate (TTCP), a material of considerable interest for human implantation due to its similarity hydroxyapatite, was studied by means Raman and FT-IR spectroscopy. The spectra were interpreted on the basis group theoretical considerations. In addition, setting reaction calcium cement (CPC) consisting an equimolar mixture TTCP dicalcium (DCPA) investigated band totally symmetric mode ν1 showed marked factor splittings. splitting components arose at coincident...
The performance of different poly(3,4-ethylenedioxythiophene) (PEDOT) films was compared by electrochemical, spectroelectrochemical, and time-derivative measurements absorbance versus potential (linear potential-scan voltabsorptometry) for an overall spectroelectrochemical characterization the electrochromic properties in ionic liquids such as 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMITFSI). signals were monitored at wavelengths, information obtained therefrom...
Inorganic/organic (hybrid) complementary electrochromic devices (ECDs) of the type [transparent conducting oxide (TCO)//inorganic counter electrode/hydrophobic electrolytic membrane/polymeric working electrode//TCO] were assembled. The electrodes consisted spin-coated polymer films prepared by moderator-controlled in situ oxidative chemical polymerisation 3,4-ethylene dioxythiophene (EDOT). Thin, galvanostatically deposited Prussian Blue (PB) employed as electrodes. Besides F : SnO2...
By combining the electrochromic (EC) properties of Prussian blue (PB) and poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), complementary EC displays manufactured by slot‐die coating screen printing on flexible plastic substrates are reported. Various display designs have been realized, resulting in operating either transmissive or reflective mode. For transmission mode displays, color contrast is enhanced switching two electrodes PB PEDOT:PSS. Both exhibiting a concurrent...
The polarized Raman spectra of γ-substituted propyl-trialkoxysilanes [Formula: see text] have been recorded, and an assignment is proposed. are briefly discussed with emphasis on the glycidoxy compound (IV). Micro-Raman data also given for co-condensation product a 5:95 mixture III IV. copolymer spectrum compared to precursor show effect condensation some selected vibrational bands. No bands residual, noncondensed Si-OH groups found in polymer from which three-dimensional network can be...