A5079884647- Advanced Physical and Chemical Molecular Interactions
- Inorganic and Organometallic Chemistry
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Carbon Nanotubes in Composites
- Fullerene Chemistry and Applications
- Fiber-reinforced polymer composites
- Magnetic and Electromagnetic Effects
- Molecular Junctions and Nanostructures
- Electrohydrodynamics and Fluid Dynamics
- History and advancements in chemistry
- Chemical and Physical Properties of Materials
- Chemistry and Stereochemistry Studies
- Muon and positron interactions and applications
- Various Chemistry Research Topics
- Advanced Sensor and Energy Harvesting Materials
- Advanced Polymer Synthesis and Characterization
- Perovskite Materials and Applications
- Nanotechnology research and applications
- Polymer Nanocomposite Synthesis and Irradiation
- Semiconductor materials and interfaces
- Synthesis and properties of polymers
- Electromagnetic wave absorption materials
- Polymer Nanocomposites and Properties
- Surfactants and Colloidal Systems
Centre National de la Recherche Scientifique
2016-2025
Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux
2016-2025
Universidade Estadual Paulista (Unesp)
2025
Université de Pau et des Pays de l'Adour
2008-2024
University of East Anglia
2023
Ingenierie des Materiaux polymeres
2023
58.com (China)
2023
ZHAW Zurich University of Applied Sciences
2023
International Union of Pure and Applied Chemistry
2015-2023
Triangle
2023
Abstract A general overview of the optoelectronic properties π‐conjugated polymers is presented. Two types polymer are discerned: interchangeable structures same energy (degenerate), such as polyacetylene; and non‐degenerate polymers, poly( para ‐phenylene). The band degenerate related to their conductivities in doped non‐doped states. In both cases, disorder impurities play an important role conductivity. Polarons, bipolarons excitons detailed with respect doping charge transfers. Given...
A series of poly(3-hexylthiophene)s (P3HTs) and poly(3-butylthiophene)s (P3BTs) with predetermined molecular weights varying polydispersities are prepared using a simplified Grignard metathesis chain-growth polymerization. Techniques were elaborated to prepare extremely high weight P3HT (number-average around 280 000 g mol–1) low polydispersity (< 1.1) without resorting fractionation. Optimization the annealing solar cells based on blends poly(3-alkylthiophene)s (P3ATs) [6,6]-phenyl C61...
Abstract A simple overview of the methods used and expected benefits block copolymers in organic photovoltaic devices is given this review. The description process makes it clear how detailed self‐assembly properties can be exploited. Organic technology, an inexpensive, clean renewable energy source, extremely promising option for replacing fossil fuels. It to deliver printable processed on flexible substrates using high‐volume techniques. Such devices, however, currently lack long‐term...
π-Conjugated block copolymers have been prepared from terminal azide functionalized polystyrenes (PS) and alkyne poly(3-hexylthiophene)s (P3HT) via a copper(I) catalyzed Huisgen [3 + 2] dipolar cycloaddition reaction. The α-azido-PS homopolymer was by atom transfer radical polymerization specifically designed initiator bearing the function, whereas ω-ethynyl-P3HT α,ω-pentynyl-P3HT were synthesized modified Grignard metathesis using alkynyl derivatives. electronic environment of end groups...
Abstract This review gives a simple introduction to the electronic, optical and structural behaviour of rod–coil block copolymers in which rod is conjugated. The current understanding properties conjugated polymers discussed, as self‐assembly characteristics copolymers, along with their respect organic light‐emitting diode photovoltaic devices. Poly( p ‐phenylene), poly( ‐phenylenevinylene) polythiophenes are then used give concrete examples short history developments this astounding field....
This mini-review gives a simple overview of the workings organic photovoltaic (OPV) devices, way in which charge transfer occurs through active layers, and then introduces how photo-induced carrier extraction by linearly increasing voltage (photo-CELIV) time flight (TOF) techniques can be employed to give comprehensive indications mobility, density recombination OPVs. It is shown photo-CELIV TOF characterizations, using current transients, an understanding degradation mechanisms observation...
An amphiphilic multiblock copolymer comprising nearly monodisperse poly(ethylene oxide) segments (Mw/Mn = 1.03) and polydisperse poly(methylphenylsilane) (PMPS) 2.0) forms a variety of well-defined morphologies such as vesicles, micellar rods, helices upon aggregation in water-based solvent systems, despite this character. Since polysilanes show σ-conjugation the main chain, optical electronic properties described block depend on its confomational behavior. It is demonstrated by microscopic...
The photo-oxidation mechanism of thin-film blends based on poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) upon irradiation with ultraviolet–visible light (UV-Vis) was studied. use deuterated P3HT, i.e., poly(3-hexyl-d13-thiophene) (P3HdT), permitted discrimination carbon originating from the hexyl-d13 chain and PCBM nondeuterated thiophene unit. both components blend monitored using combination various analytical techniques to probe bulk surface deposits. results...
A series of novel block copolymers, processable from single organic solvents and subsequently rendered amphiphilic by thermolysis, have been synthesized using Grignard metathesis (GRIM) reversible addition–fragmentation chain transfer (RAFT) polymerizations azide–alkyne click chemistry. This chemistry is simple allows the fabrication well-defined copolymers with controllable lengths. The designed for use as interfacial adhesive layers in photovoltaics to enhance contact between photoactive...
The synthesis of the first example a block copolymer based on polymer using fullerene as backbone repeat subunit is demonstrated. A facile route incorporating electron acceptor and high content polymer, poly{(1,4-fullerene)-alt-[1,4-dimethylene-2,5-bis(cyclohexylmethyl ether)phenylene]} (PFDP), with archetypal donor, poly(3-hexylthiophene) (P3HT), into multiblock (MBC) structure presented. α,ω-Bromomethyl-PFDP was prepared by atom-transfer radical addition polymerization (ATRAP) then reacted...
The universal adoption of an agreed nomenclature has never been more important for the description chemical structures in publishing and online searching. International Union Pure Applied Chemistry (IUPAC) Chemical Abstracts Service (CAS) make similar recommendations. main points are shown here with references to original documents. Further details can be found IUPAC Purple Book.
S. J. Holder, N. A. M. Sommerdijk, Williams, R. Nolte, C. Hiorns, Sommerdijk and G. Jones, Chem. Commun., 1998, 1445 DOI: 10.1039/A803250E
A prototype for a new class of macromolecules with high fraction fullerene is proposed. Their facile synthesis, modular structure, electronic activity, and novel solid-state behavior make them promising materials photovoltaic applications. Controlled reversible-deactivation radical additions the sterically bulky 1,4-bis(methylcyclohexyl ether)-2,5-dibromomethyl benzene to are indicated by GPC, NMR, TGA studies yield oligomers polymers containing C60 in main chain. UV cyclic voltammetry...
A novel main-chain polyfullerene, poly[fullerene-alt-2,5-bis(octyloxy)terephthalaldehyde] (PPC4), is investigated for its hypothesized superior morphological stability as an electron-accepting material in organic photovoltaics relative to the widely used fullerene phenyl-C61-butyric acid methyl ester (PCBM). When mixed with poly(3-hexylthiophene-2,5-diyl) (P3HT), PPC4 affords low-charge-generation yields because of poor intermixing within blend. The adoption a multiacceptor system, by...
For the first time, this article shows how it is possible to make well-soluble poly(fullerene xylene)s using potassium iodide and in low amounts of solvents. This new method makes use low-cost, environmentally friendly starting materials, nonchlorinated solvents, main-chain C60, PCBM, for C70, polymers. The reaction can even be performed presence water, further increasing its environmental friendliness. Specifically, a dibromomethylated comonomer, such as...
The structure of aqueous dispersions hydrophobically end-capped poly(ethylene oxide) (PEOM) was investigated by small-angle neutron scattering. Two polymers, M16C16 and D32C16, with the same hydrophilic/hydrophobic balance, either one or two n-hexadeca end groups average molecular weights, M, 16 000 32 g mol-1, respectively, were studied in heavy water. In addition, a sample oxide), M = 35 deuterated n-octadecyl water water/water mixture (17.6% D2O) to selectively match PEO chain. all cases,...
The grafting of “living” polystyrene-block-poly(1,3-cyclohexadiene)-block-styryllithium and poly(1,3-cylclohexadiene)-block-polystyryllithium onto C60 yielded, respectively, 6-star-fullerene[styrene-block-poly(1,3-cyclohexadiene)-block-polystyrene] 6-star-fullerene[polystyrene-block-poly(1,3-cyclohexadiene)]. Selective dehydrogenation these macromolecules 6-star-fullerene[styrene-block-poly(1,4-phenylene)-block-polystyrene], C60(st−PPP−PS)6,...
Abstract The stereo‐electronic control over bisadditions of conjugated polymers to fullerene (C 60 ) is explored in the formation alternating copolymers. chemistry, resulting configuration, and properties poly(3‐hexylthiophene)‐ alt ‐C copolymers prepared by either classic pyrrolidine ring or an atom transfer radical addition are compared. Both routes result controlled additions C . Extensive macromolecular modeling through PM6 methods indicate that there no conjugation between P3HT systems...
This predictive study demonstrates that the introduction of aromatic-oxy-alkyl links surprisingly makes materials more resistant to photo-oxidative degradation by reducing hydrogen abstraction. revelation it possible, for first time, design a toolbox substituents soluble, photostable conjugated materials.