ORCID Profile
0000-0001-7183-6022
Current Organisation
University of St Andrews
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Publisher: Wiley
Date: 03-05-2017
Publisher: Wiley
Date: 20-04-2017
Publisher: Wiley
Date: 13-11-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC03499K
Abstract: Deep-blue luminescent [{Ir(C^N) 2 } 3 (L) 2 ] 3+ coordination cages with structurally integral pyridyl-azo-phenyl groups can be reversibly photo-isomerised with no compositional change.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0SC05190J
Abstract: A method for measuring triplet diffusion between TADF molecules is presented, and implications of limited triplet diffusion for OLEDs discussed.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT00945G
Abstract: Investigating the effect of the third ketone arm on the photophysics of visible and NIR emitting lanthanoid β-triketonate complexes.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8DT04749A
Abstract: Study of a series of lanthanoid complexes reveals that ancillary ligands play a significant role in their photophysical properties.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT03585G
Abstract: Structures varying from polynuclear assemblies to coordination polymers are formed when β-triketonate ligands undergo retro-Claisen condensation reactions in the presence of lanthanoids.
Publisher: Frontiers Media SA
Date: 02-08-2021
DOI: 10.3389/FCHEM.2021.728845
Abstract: [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.
Publisher: Wiley
Date: 03-07-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8DT02499E
Abstract: Mixed coordination polymers containing Eu 3+ and Nd 3+ cations display energy forward and back migration between Eu 3+ and Nd 3+ , resulting in dual red and near-infrared emission.
Publisher: American Chemical Society (ACS)
Date: 18-02-2021
DOI: 10.26434/CHEMRXIV.14046449.V1
Abstract: We report a series of seven cationic heteroleptic copper(I) complexes of the form [Cu (P^P) (dmphen)]BF 4 , where dmphen is 2,9-dimethyl-1,10-phenanthroline and P^P is a diphosphine chelate, in which the effect of the bite angle of the diphosphine ligand on the photophysical properties of the complexes was studied. Several of the complexes exhibit moderately high photoluminescence quantum yields in the solid-state, with Φ PL of up to 35%, and in solution, with Φ PL of up to 98%. We were able to correlate the powder photoluminescence quantum yields with the %V bur of the P^P ligand. The most emissive complexes were used to fabricate both organic light-emitting diodes (OLEDs) and light-emitting electrochemical calls (LECs), both of which showed moderate performance. Compared to the benchmark Cu(I)-based LECs, [Cu(dnbp)(DPEPhos)] + (EQE max = 16%), complex 3 (EQE max = 1.85%) showed much longer device lifetime (t 1/2 = 1.25 h and .5 h for [Cu(dnbp)(DPEPhos)] + and complex 3 , respectively). The electrochemiluminescent properties of several complexes were also studied which to the best of our knowledge constitutes the first ECL study for heteroleptic copper (I) complexes. Notably, complexes exhibiting more reversible electrochemistry were associated with higher annihilation ECL as well as better performance in an LEC device.
Publisher: Informa UK Limited
Date: 25-01-2021
Publisher: Wiley
Date: 27-12-2018
Publisher: Wiley
Date: 27-12-2018
Publisher: Wiley
Date: 15-10-2018
Abstract: High-efficiency pure blue phosphorescent organic light-emitting diodes (OLEDs) remain one of the grand challenges, principally because the emissive complexes employed either do not possess sufficiently high photoluminescence quantum yields or exhibit unsatisfactory Commission International de l'Éclairage (CIE) coordinates. Here two deep-blue-emitting homoleptic iridium(III) complexes are reported and OLEDs are demonstrated with CIE coordinates of (0.15, 0.05) and maximum external quantum efficiency of 13.4%, which decreases slightly to 12.5% at 100 cd m
Publisher: Wiley
Date: 28-11-2022
Abstract: Four new deep‐blue‐emitting iridium(III) NHC complexes containing sterically demanding ligands are synthesized. The four complexes show bright, deep‐blue emission, with emission maxima between 420 and 427 nm in both acetonitrile solution and 30 wt% doped films in TSPO1 the two meridional isomers showing photoluminescence quantum yields, Φ PL , in doped films of 80% and 89%. The two meridional isomers are used to assess the impact of emitters containing bulky, sterically demanding ligands on the performance of organic light‐emitting diodes (OLEDs). OLEDs employing a stepped doping profile with mer ‐Ir(tfpi_tmBn) 3 as the emitter produce the highest performing devices in this study, with these devices exhibiting deep‐blue [λ EL = 429 nm, CIE = (0.16, 0.08)] emission and a maximum external quantum efficiency (EQE max ) of 14.9%, which decreases to 11.7% at 100 cd m −2 . The performance of the OLEDs shows very good efficiencies and moderate efficiency roll‐offs in comparison to reported phosphorescent deep‐blue OLEDs with CIE y ≤ 0.08, as required for commercial displays. The promising results suggest that the design strategy of adding steric bulk to blue emitting iridium complexes containing NHC ligands is a useful strategy for reducing intermolecular interactions between emitters in OLEDs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3DT00304C
Abstract: This combined synthetic and computational project explores the impact of adding heavy atoms to ligands on emissive iridium complexes. Addition of trimethylsilyl groups to Ir(ppy) 2 (pic) resulted in modest narrowing of the emission spectra.
Publisher: American Chemical Society (ACS)
Date: 07-2021
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Eli Zysman-Colman.