Search results for "conjugated polymer"

showing 4 items of 14 documents

Polymorphism-Triggered Reversible Thermochromic Fluorescence of a simple 1,8-Naphthyridine

2013

The fluorescent behavior in the solid state of a naphthyridine-based donor–acceptor heterocycle is presented. Synthesized as a crystalline blue-emissive solid (Pbca), the compound can easily be transformed in its P21/c polymorphic form by heating. The latter material shows blue to cyan emission switching triggered by a reversible thermally induced phase transformation. This fact, the reversible acidochromism, and the strong anisotropic fluorescence of the compound in the solid state, account for the potential of 1,8-naphthyridines as simple and highly tunable organic compounds in materials science.

ThermochromismnaphthyridinesChemistryStereochemistryfield-effect transistorsSolid-statefood and beverageschemical sensorsGeneral ChemistrylassersCondensed Matter PhysicsFluorescenceCombinatorial chemistrysolid-state fluorescencePolymorphism (materials science)emissionconjugated polymersluminescencepackingGeneral Materials ScienceLuminescencephotocromism
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Donor-Acceptor Polythiophene Copolymers with Tunable Acceptor content for Photoelectric Conversion Devices

2004

The synthesis and characterization of a new series of substituted polythiophenes containing an electron acceptor anthraquinone moiety in the side chain are reported. The acceptor molar content was varied by the co-polymerization of both alkylthiophene and thiophene bearing anthraquinone monomers in different ratios. NMR analysis shows a good correlation between the monomer feed composition at the beginning of the polymerization and the actual unit composition of the backbone. The conjugation length and the chemical composition of the copolymers as a function of the molecular weight have been studied by size exclusion chromatography. Small angle X-ray scattering and UV-Vis absorption spectra…

chemistry.chemical_classificationChemistryElectron donorSettore CHIM/06 - Chimica OrganicaGeneral ChemistryConjugated polymersElectron acceptorPhotochemistryAcceptorAnthraquinoneDonor-acceptorchemistry.chemical_compoundPolymerizationTetracyanoanthraquinodimethaneMaterials ChemistrySide chainThiophenePolythiophenesPolythiopheneOrganic chemistryAnthraquinone
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New amphiphilic conjugates of mono- and bis(carboxy)-PEG(2,000) polymers with lipoamino acids as surface modifiers of colloidal drug carriers

2010

chemistry.chemical_classificationamphiphilesPolymers and Plasticspoly(ethylene glycol)Organic Chemistrylipoaminoacids copolymers surface modifiers drug carrierslipoamino acidslong-circulating drug-delivery systemsPolymerCondensed Matter PhysicsColloidMatrix-assisted laser desorption/ionizationchemistrySettore CHIM/09 - Farmaceutico Tecnologico ApplicativoPolymer chemistryAmphiphileamphiphiles; conjugated polymers; lipoamino acids; long-circulating drug-delivery systems; MALDI-TOF MS; poly(ethylene glycol)Materials Chemistryconjugated polymersMALDI-TOF MSPhysical and Theoretical ChemistryDrug carrierConjugate
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Functionalization of P3HT with Various Mono- and Multidentate Anchor Groups

2018

Due to its favorable optoelectronic properties and the accessibility via Grignard metathesis (GRIM) polymerization, poly(3-hexylthiophene) (P3HT) is one of the most applied conjugated polymers. The ‘living' nature of GRIM polymerization enables the modification of the polymer and the installation of desired properties. In the present study, two versatile approaches for the synthesis of anchor group-modified P3HT have been developed, which enable the functionalization of various inorganic nanoparticles. Depending on the polymerization conditions, mono- and bifunctional ethynyl-terminated P3HT or solely monofunctionalized aldehyde-terminated P3HT was synthesized. Afterwards, the quantitative …

chemistry.chemical_classificationhybrid nanocompositesChemistryImineGeneral ChemistryPolymerConjugated systemGRIMMetathesisP3HTchemistry.chemical_compoundPolymerizationPolymer chemistryclick chemistryClick chemistryconjugated polymersSurface modificationBifunctional
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