Search results for "Bodipy"

showing 4 items of 84 documents

2-[4-(Di­methyl­amino)­phen­yl]-3,3-di­fluoro-3H-naphtho­[1,2-e][1,3,2]oxaza­borinin-2-ium-3-uide

2017

In the title compound, C19H17BF2N2O, a twist about the N—C single bond is observed, making the cross conjugation not as efficient as in the case of a planar structure. The borone complex has tetrahedral geometry. In the crystal, molecules are conected by weak C—H...F hydrogen bonds.

crystal structureBODIPY dyes010405 organic chemistryChemistryHydrogen bondCrystal structure010403 inorganic & nuclear chemistry01 natural sciences0104 chemical sciencesCrystalCrystallographyflurophoreslcsh:QD901-999Single bondCross-conjugationlcsh:CrystallographyIUCrData / International Union of Crystallography
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Energy transfer in diiodoBodipy-grafted upconversion nanohybrids.

2015

Steady-state and time-resolved emission studies on nanohybrids consisting of NaYF4:Yb,Er and a diiodo-substituted Bodipy (UCNP-IBDP) show that the Yb(3+) metastable state, formed after absorption of a near-infrared (NIR) photon, can decay via two competitive energy transfer processes: sensitization of IBDP after absorption of a second NIR photon and population of Er(3+) excited states.

education.field_of_studyPhotonMaterials scienceEnergy transferPopulationPhysics::OpticsNanotechnologyAstrophysics::Cosmology and Extragalactic Astrophysics02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyPhotochemistry01 natural sciencesPhoton upconversion0104 chemical scienceschemistry.chemical_compoundchemistryExcited stateMetastabilityGeneral Materials ScienceBODIPY0210 nano-technologyAbsorption (electromagnetic radiation)educationAstrophysics::Galaxy AstrophysicsNanoscale
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Synthesis, Electrochemistry, and Photophysics of Aza-BODIPY Porphyrin Dyes

2016

International audience; The synthesis of dyad and triad aza-BODIPY-porphyrin systems in two steps starting from an aryl-substituted aza-BODIPY chromophore is described. The properties of the resulting aza-BODIPY-porphyrin conjugates have been extensively investigated by means of electrochemistry, spectroelectrochemistry, and absorption/emission spectroscopy. Fluorescence measurements have revealed a dramatic loss of luminescence intensity, mainly due to competitive energy transfer and photoinduced electron transfer involving charge separation followed by recombination.

resonance energy-transferporphyrinoidstetraarylazadipyrromethenes010402 general chemistryPhotochemistryElectrochemistry01 natural sciences7. Clean energy[ CHIM ] Chemical SciencesCatalysisFluorescence spectroscopyPhotoinduced electron transfersinglet oxygentransfersphotoinduced electron-transferphotoinduced electron transferchemistry.chemical_compoundgeneration[CHIM]Chemical Scienceselectrogenerated chemiluminescencespectroscopic propertiespolyadsAbsorption (electromagnetic radiation)aza-BODIPYs010405 organic chemistryfullereneOrganic ChemistryGeneral ChemistryChromophorefluorescence spectroscopyPorphyrinFluorescence0104 chemical sciences3. Good healthchemistryelectrochemistryderivativesLuminescence
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BODIPY atropisomer interconversion, face discrimination, and superstructure appending

2016

International audience; A strategy was developed to append sterically hindered apical pickets on both faces of the BODIPY platform to prevent stacking and aggregation. Ortho-substitution of both the meso-phenyl ring and the boron-bound catechol affords the right directionality to append pickets, achieve face discrimination, featuring two inter-convertible atropisomers, and is reminiscent of the picket-fence strategy in porphyrins.

spectroscopybindingStereochemistryStackingAppend010402 general chemistryRing (chemistry)porphyrins01 natural sciencesbiomolecules[ CHIM ] Chemical SciencesCatalysischemistry.chemical_compounddimersMaterials Chemistryfluorophores[CHIM]Chemical SciencesAtropisomer010405 organic chemistryChemistryMetals and AlloysGeneral Chemistry0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsFace discriminationCeramics and CompositescellsfluorescenceBODIPYprobesSuperstructure (condensed matter)moieties
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