A5011428775- Conducting polymers and applications
- Transition Metal Oxide Nanomaterials
- Organic Electronics and Photovoltaics
- Oxidative Organic Chemistry Reactions
- Radical Photochemical Reactions
- Carbon Nanotubes in Composites
- Luminescence and Fluorescent Materials
- Supercapacitor Materials and Fabrication
- Synthetic Organic Chemistry Methods
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Asymmetric Synthesis and Catalysis
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
- Crystallization and Solubility Studies
- Surface Modification and Superhydrophobicity
- Nanotechnology research and applications
- X-ray Diffraction in Crystallography
- Advanced Memory and Neural Computing
- Photochemistry and Electron Transfer Studies
- Tribology and Wear Analysis
- Nanowire Synthesis and Applications
University of Florida
2004-2012
Dartmouth College
2004
Abstract The poly(3,4‐dioxypyrrole) (PXDOP) family of conducting and electroactive polymers has now been developed to the point that multiple synthetic routes allow many functionalized with controllable optoelectronic redox properties. These properties, which include high conductivity, multicolor cathodic anodic electrochromism, rapid switching, these materials be used in a variety applications potentially coatings, electrochromic windows displays, chemical sensors, bioactive materials,...
Dual polymer absorptive/transmissive electrochromic (EC) window devices have been assembled using the solution-processable and high-EC-contrast PProDOT-(CH2OEtHx)2 as EC material, along with a non-color-changing electroactive polymer, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA), counter electrode material. Indium−tin oxide (ITO) highly transmissive single-walled carbon nanotube (SWNT) film coated glass electrodes are used substrates. The use of EC/non-color-changing...
This paper reports a novel supercapacitor electrode design based on poly(3,4-propylenedioxypyrrole) (PProDOP) electropolymerized onto thin films of single walled carbon nanotubes (SWNTs) glass substrates. permits the electropolymerization thicker PProDOP than can be deposited flat gold-coated Kapton electrodes and correspondingly greater capacitance per unit area. A pyrene functionalized polyfluorene, designated Sticky-PF, was designed used as an effective monolayer interfacial adhesion...
The preparation of annulated furan systems as key synthetic intermediates through the application a two-step annulation involving an electrochemical ring closure between and silyl enol ether has been studied. reaction was shown to be quite general for formation six-membered rings in good yields tolerant variety different functional groups. highly stereoselective, leading cis-fused systems. Cyclic voltammetry probe molecules were used gain mechanistic insight into reaction. These studies...
This Letter describes the synthesis and photophysical characterization of a Ru(II) assembly consisting metal polypyridyl complexes linked together by polyfluorene scaffold. Unlike many scaffolds incorporating saturated linkages, conjugated polymer in this system acts as functional light-harvesting component. Conformational disorder breaks conjugation backbone, resulting chain composed chromophore units, whose relative energies depend on segment lengths. Photoexcitation femtosecond laser...
We present a method for the synthesis of soluble and processable 3,4-alkylenedioxypyrrole (XDOP)-based conjugated polymers via an iododecarboxylation−deiodination polymerization methodology. Polymerization to respected PXDOP derivatives suitably high molecular weight (3.8−14.2 kDa vs polystyrene as measured by GPC) was achieved either heating neat monomers few hours or allowing them remain at room temperature several days. A family four synthesized characterized optically electrochemically....
The poly(3,4-alkylenedioxypyrrole) family of conjugated polymers (the PXDOPs) shows potential for widespread applications due to their unique electronic and optical properties; however, progress has been limited synthetic limitations. We report an optimized route a new compound, 3,4-propyledioxypyrrole-N-acetic acid (ProDOP-N-AcOH), which utilizes inexpensive reagents, high yielding steps that require little or no purification (and chromatography), can be converted, using either one two...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTConvenient Synthesis of Functional Polyfluorenes via a Modified One-Pot Suzuki−Miyaura Condensation ReactionRyan M. Walczak†‡, Robert N. Brookins†, Alice Savage†, Eveline van der Aa†, and John R. Reynolds*†View Author Information The George Josephine Butler Polymer Research Laboratory, Department Chemistry, Center for Macromolecular Science Engineering, University Florida, Gainesville, Florida 32611,...
Herein we report a complete family of conformationally restricted PProDOT derivatives with varying alkylene tether lengths. It was found that variation the length and structure electropolymerizable monomer successful in fine-tuning electrochemical optical properties subsequent material. band gap materials could be varied between 1.94 2.26 eV, "sweet spot" for obtaining maximum electronic existing at n = 6 length, while maintaining low redox potentials. also these polymers exhibited stable...
We report a tethered poly(3,4-propylenedioxythiophene) derivative with built-in polymer conformation restriction which locks the conjugated chain at specific dihedral angle, thus providing handle in to tune optical and electronic properties of material.
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