physica status solidi (b) · 1978 · 18 citations · 7 references
Natural SciencesChemistryMaterials ScienceCrystal StructureMaterials ChemistrySpectroscopyElectron Paramagnetic ResonanceElectron Spin Resonance SpectroscopyMagnetism Of Inorganic CompoundsMicrowave SpectroscopyPhotochemistryCharge-transfer ComplexesElectronic Energy TransferMagnetic ResonanceMagnetic Resonance PhysicsPolycrystalline MaterialsTriplet State ChemistryTriplet State LifetimesZeeman Transitions
Abstract A magnetic‐resonant modulation of the photoconductivity of polycrystalline samples of CT complex anthracene–TCNB is observed. The modulation is due to microwave induced transitions between Zeeman sublevels of the excited triplet CT state. The magnetic resonance spectrum of the CT triplet state is registered, the lifetime of the latter is estimated to be about 10 −9 s. Switching‐on the resonant microwave field decreases the photoconductivity. The nonresonant effect of the permanent magnetic field on photocurrent and fluorescence of anthracene–TCNB crystals is investigated. A scheme is given representing the processes of the electronic excitation energy conversion in the anthracene–TCNB CT complex.
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