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Themed collection Luminescent Complexes and Materials for Light-Emitting Devices

27 items
Editorial

Luminescent materials for solid-state lighting

Welcome to this Dalton Transactions themed issue on luminescent materials for solid-state lighting.

Graphical abstract: Luminescent materials for solid-state lighting
Perspective

Computational insights into the photodeactivation dynamics of phosphors for OLEDs: a perspective

In this perspective we highlight recent computational efforts to unravel competing photodeactivation mechanisms of radiative and non-radiative nature of phosphors.

Graphical abstract: Computational insights into the photodeactivation dynamics of phosphors for OLEDs: a perspective
Perspective

Improving the carrier balance of light-emitting electrochemical cells based on ionic transition metal complexes

Improved carrier balance of a light-emitting electrochemical cell reduces exciton quenching near the doped layers, rendering a higher device efficiency.

Graphical abstract: Improving the carrier balance of light-emitting electrochemical cells based on ionic transition metal complexes
Perspective

FIrpic: archetypal blue phosphorescent emitter for electroluminescence

FIrpic is the most investigated bis-cyclometallated iridium complex. This Perspective reviews the main experimental and theoretical aspects of FIrpic as well as its use as sky-blue emitter for OLED.

Graphical abstract: FIrpic: archetypal blue phosphorescent emitter for electroluminescence
Communication

Unusual near-white electroluminescence of light emitting diodes based on saddle-shaped porphyrins

In contrast to the red electroluminescence emission frequently observed in porphyrins based OLED devices, the present devices exhibit a nearly white emission with greenish yellow, yellowish green and blue green hues.

Graphical abstract: Unusual near-white electroluminescence of light emitting diodes based on saddle-shaped porphyrins
Communication

Synthesis of dibenzothiophene-based host materials with a dimesitylborane substituent and their green PHOLED performances

Two structural isomers composed by linking between dibenzothiophene and dimesitylborane moieties on the phenyl group were synthesized and showed similar green device performance regardless of their different linkage positions.

Graphical abstract: Synthesis of dibenzothiophene-based host materials with a dimesitylborane substituent and their green PHOLED performances
Communication

X-shaped benzoylbenzophenone derivatives with crossed donors and acceptors for highly efficient thermally activated delayed fluorescence

Thermally activated delayed fluorescence (TADF) materials based on benzoylbenzophenone, AcPmBPX and PxPmBPX, were designed and synthesized.

Graphical abstract: X-shaped benzoylbenzophenone derivatives with crossed donors and acceptors for highly efficient thermally activated delayed fluorescence
Paper

Emissive Ir(III) complexes bearing thienylamido groups on a 1,10-phenanthroline scaffold

Highly emissive cyclometallated Ir(III) complexes bearing phenanthroline-based ancillary ligands are presented and the effect of tethered thiophene moieties on the photophysical properties is explored.

Graphical abstract: Emissive Ir(iii) complexes bearing thienylamido groups on a 1,10-phenanthroline scaffold
Open Access Paper

C^C* cyclometalated platinum(II) N-heterocyclic carbene complexes with a sterically demanding β-diketonato ligand – synthesis, characterization and photophysical properties

New platinum(II) triazolylidene complexes were prepared to investigate the influence of the 1,3-bis(2,4,6-trimethyl)-phenylpropan-1,3-dionato ligand on the photoluminescence properties.

Graphical abstract: C^C* cyclometalated platinum(ii) N-heterocyclic carbene complexes with a sterically demanding β-diketonato ligand – synthesis, characterization and photophysical properties
Paper

Tuning the electronic and phosphorescence properties of blue-emitting iridium(III) complexes through different cyclometalated ligand substituents: a theoretical investigation

A DFT/TDDFT investigation was performed to estimate the OLED performance of six reported and seven newly designed iridium(III) complexes.

Graphical abstract: Tuning the electronic and phosphorescence properties of blue-emitting iridium(iii) complexes through different cyclometalated ligand substituents: a theoretical investigation
Paper

Synthesis and characterization of phosphorescent platinum and iridium complexes with cyclometalated corannulene

Novel, emissive Pt(II) and Ir(III) complexes are the first to have measured rates of inversion of cyclometalated corannulene.

Graphical abstract: Synthesis and characterization of phosphorescent platinum and iridium complexes with cyclometalated corannulene
Open Access Paper

Iridium(III) N-heterocyclic carbene complexes: an experimental and theoretical study of structural, spectroscopic, electrochemical and electrogenerated chemiluminescence properties

Theoretical and experimental studies of a series of iridium N-heterocyclic carbene complexes.

Graphical abstract: Iridium(iii) N-heterocyclic carbene complexes: an experimental and theoretical study of structural, spectroscopic, electrochemical and electrogenerated chemiluminescence properties
Open Access Paper

Formylated chloro-bridged iridium(III) dimers as OLED materials: opening up new possibilities

In this study, a series of four formyl-substituted chloro-bridged iridium(III) dimers were prepared.

Graphical abstract: Formylated chloro-bridged iridium(iii) dimers as OLED materials: opening up new possibilities
Paper

Bidentate NHC^pyrozolate ligands in luminescent platinum(II) complexes

The tuning of luminescence from blue to yellow was achieved with platinum complexes containing NHC^pyrozolate and functionalized-phenyl-pyridine or triazole-pyridine ligands.

Graphical abstract: Bidentate NHC^pyrozolate ligands in luminescent platinum(ii) complexes
Paper

Neutral N^C^N terdentate luminescent Pt(II) complexes: their synthesis, photophysical properties, and bio-imaging applications

The reported cyclometallated Pt(II) complexes are characterized by a high cell permeability and a low cytotoxicity. In particular, PtL1Cl shows a very fast internalization kinetics.

Graphical abstract: Neutral N^C^N terdentate luminescent Pt(ii) complexes: their synthesis, photophysical properties, and bio-imaging applications
Paper

Luminescent Pt(II) complexes bearing dual isoquinolinyl pyrazolates: fundamentals and applications

Pt(II) complex [Pt(Lx)2], LxH = 6-t-butyl-1-(3-trifluoromethyl-1H-pyrazol-5-yl) isoquinoline, with three colored morphologies can be interconverted by grinding and/or wetting with solvents.

Graphical abstract: Luminescent Pt(ii) complexes bearing dual isoquinolinyl pyrazolates: fundamentals and applications
Paper

Switchable platinum-based tweezers with Pt–Pt bonding and selective luminescence quenching

Molecular tweezers incorporating peripheral platinum salphen complexes and a central chelating terpyridine group have been synthesized and their switching and photophysical response to metal ions studied.

Graphical abstract: Switchable platinum-based tweezers with Pt–Pt bonding and selective luminescence quenching
Paper

Cationic, luminescent cyclometalated iridium(III) complexes based on substituted 2-phenylthiazole ligands

Ten cationic heteroleptic iridium(III) complexes involving substituted phenylthiazole ligands reveal phosphorescence emission in solution.

Graphical abstract: Cationic, luminescent cyclometalated iridium(iii) complexes based on substituted 2-phenylthiazole ligands
Paper

Application of three-coordinate copper(I) complexes with halide ligands in organic light-emitting diodes that exhibit delayed fluorescence

Conventional bottom-emitting devices with three-layered structures containing sublimable three-coordinate copper(I) complexes produce bright green luminescence with maximum external quantum efficiencies (EQE) of 18.6–22.5%.

Graphical abstract: Application of three-coordinate copper(i) complexes with halide ligands in organic light-emitting diodes that exhibit delayed fluorescence
Paper

Blue phosphorescent N-heterocyclic carbene chelated Pt(II) complexes with an α-duryl-β-diketonato ancillary ligand

Blue phosphorescent Pt(II) complexes that display bright blue emission in the solid state have been obtained employing NHC-based CC*-chelate ligands and an α-duryl-β-diketonato ancillary ligand that provides steric blocking to minimize intermolecular interactions.

Graphical abstract: Blue phosphorescent N-heterocyclic carbene chelated Pt(ii) complexes with an α-duryl-β-diketonato ancillary ligand
Paper

Methylated Re(I) tetrazolato complexes: photophysical properties and Light Emitting Devices

Methylated Re(I) tetrazolato complexes are suitable as phosphors for Light Emitting Devices.

Graphical abstract: Methylated Re(i) tetrazolato complexes: photophysical properties and Light Emitting Devices
Paper

Luminescent Re(I) terpyridine complexes for OLEDs: what does the DFT/TD-DFT probe reveal?

The electronic structure and spectroscopic properties of a series of rhenium(I) terpyridine complexes were investigated using density functional theory (DFT) and time dependent density functional theory (TD-DFT) methods.

Graphical abstract: Luminescent Re(i) terpyridine complexes for OLEDs: what does the DFT/TD-DFT probe reveal?
Open Access Paper

A new class of luminescent Cu(I) complexes with tripodal ligands – TADF emitters for the yellow to red color range

A new class of emissive and neutral Cu(I) compounds with tripodal ligands is presented. The complexes were characterized chemically, computationally, and photophysically.

Graphical abstract: A new class of luminescent Cu(i) complexes with tripodal ligands – TADF emitters for the yellow to red color range
Paper

Emission energy of azole-based ionic iridium(III) complexes: a theoretical study

Tuning the emission color of azole-based iridium(III) complexes by changing the number and position of nitrogen atoms in the azole ring.

Graphical abstract: Emission energy of azole-based ionic iridium(iii) complexes: a theoretical study
Paper

A new insight into the chemistry of iridium(III) complexes bearing phenyl phenylphosphonite cyclometalate and chelating pyridyl triazolate: the excited-state proton transfer tautomerism via an inter-ligand PO–H⋯N hydrogen bond

Ir(pdpit)(pppo)(bptz) complex (3) reveals a PO–H–N inter- ligand H-bond from which proton transfer takes place.

Graphical abstract: A new insight into the chemistry of iridium(iii) complexes bearing phenyl phenylphosphonite cyclometalate and chelating pyridyl triazolate: the excited-state proton transfer tautomerism via an inter-ligand PO–H⋯N hydrogen bond
Paper

Tetraphenylborate versus tetraimidazolylborate as counterions for cationic iridium(III) complexes: enhanced electrochemical stabilities and electroluminescence

Tetraimidazolylborate is first used as the counterion of cationic iridium complexes to improve both electrochemical stabilities and device performance.

Graphical abstract: Tetraphenylborate versus tetraimidazolylborate as counterions for cationic iridium(iii) complexes: enhanced electrochemical stabilities and electroluminescence
Paper

A heterotrimetallic Ir(III), Au(III) and Pt(II) complex incorporating cyclometallating bi- and tridentate ligands: simultaneous emission from different luminescent metal centres leads to broad-band light emission

Di- and tri-nuclear metal complexes incorporating Au(III), Ir(III) and Pt(II) units linked via a 1,3,5-triethynylbenzene core.

Graphical abstract: A heterotrimetallic Ir(iii), Au(iii) and Pt(ii) complex incorporating cyclometallating bi- and tridentate ligands: simultaneous emission from different luminescent metal centres leads to broad-band light emission
27 items

About this collection

Inorganic and organometallic components are essential for the creation of functioning light-emitting devices, the development of which is important for reducing world energy use.

This themed issue, guest edited by Dr Eli Zysman-Colman (University of St Andrews), highlights the latest and very best research in this field to the inorganic research community.

Spotlight

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