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1دورية أكاديمية
المؤلفون: Krotkus, Simonas, Matulaitis, Tomas, Diesing, Stefan, Copley, Graeme, Archer, Emily, Keum, Changmin, Cordes, David B., Slawin, Alexandra M. Z., Gather, Malte C., Zysman-Colman, Eli, Samuel, Ifor D. W.
المساهمون: Engineering and Physical Sciences Research Council, European Commission, National Research Foundation of Korea
المصدر: Frontiers in Chemistry ; volume 8 ; ISSN 2296-2646
مصطلحات موضوعية: General Chemistry
الوصف: Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta configuration ( dPXZMePydz ) leads to high reverse intersystem crossing rate k RISC = 3.9 · 10 6 s −1 and fast thermally activated delayed fluorescence (TADF) with <500 ns delayed emission lifetime. Efficient triplet harvesting via the TADF mechanism is demonstrated in OLEDs using dPXZMePydz as the emitter but does not occur for compounds bearing weaker donor units.
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2دورية أكاديمية
المؤلفون: Mackenzie, Campbell F. R., Delforce, Lucie, Rota Martir, D., Cordes, David B., Slawin, Alexandra M. Z., Zysman-Colman, Eli
المساهمون: Engineering and Physical Sciences Research Council
المصدر: Frontiers in Chemistry ; volume 9 ; ISSN 2296-2646
مصطلحات موضوعية: General Chemistry
الوصف: [2.2]Paracyclophane scaffolds have seen limited use as building blocks in supramolecular chemistry. Here, we report the synthesis and characterization of a 1D coordination polymer consisting of silver(I) ions bound to a [2.2]paracyclophane scaffold functionalized with two 4-pyridyl units. The structure of the polymer has been determined from single crystal X-ray diffraction analysis and reveals two different silver coordination motifs that alternate along the 1D coordination polymer. The coordination polymer exhibits strong blue and sky-blue fluorescence in solution and in the crystalline solid state, respectively.
