4.8 Article

Accelerating Radiative Decay in Blue Through-Space Charge Transfer Emitters by Minimizing the Face-to-Face Donor-Acceptor Distances

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Multi-Layer π-Stacked Molecules as Efficient Thermally Activated Delayed Fluorescence Emitters

Xue-Qi Wang et al.

Summary: Multi-layer pi-stacked emitters based on spatially confined D/A/D patterns have been developed to achieve high-efficiency TADF. Dual donor moieties and a single acceptor moiety are introduced to form 3D emitters, resulting in high PLQYs, small Delta E-ST, and fast RISC processes. Devices based on these emitters exhibit maximum EQEs higher than their D/A-type analogues.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Face-to-Face Orientation of Quasiplanar Donor and Acceptor Enables Highly Efficient Intramolecular Exciplex Fluorescence

Chao Wu et al.

Summary: Intramolecular through-space charge-transfer (TSCT) excited states are utilized for developing thermally activated delayed fluorescence (TADF) emitters, with a series of precisely controlled TSCT emitters designed through alignment optimization of donor and acceptor segments. By increasing intramolecular pi-pi interactions, radiative decay rate of the lowest singlet excited state (S-1) is progressively enhanced with suppression of nonradiative decay, leading to significantly improved photoluminescence quantum yields of up to 0.99 in doped thin films. A high-efficiency electroluminescence device achieves a maximum external quantum efficiency (EQE) of 23.96% and maintains >20% at a brightness of 1000 cd m(-2), highlighting the importance of conformation control for high-efficiency intramolecular exciplex emitters.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Review Materials Science, Multidisciplinary

Thermally Activated Delayed Fluorescence beyond Through-Bond Charge Transfer for High-Performance OLEDs

Qin Xue et al.

Summary: Charge transfer is crucial in governing exciton dynamics in organic emitters, particularly in thermally activated delayed fluorescence (TADF) emitters. It plays a role in shaping radiative decays of excitons and modulating luminescent properties. Through-space charge transfer is found to be effective in changing emissive colors, exciton lifetimes, and quantum yields in OLEDs.

ADVANCED OPTICAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Simultaneously Enhanced Reverse Intersystem Crossing and Radiative Decay in Thermally Activated Delayed Fluorophors with Multiple Through-space Charge Transfers

Tianyu Huang et al.

Summary: Materials with thermally activated delayed fluorescence (TADF) and through-space charge transfer (CT) properties have received significant attention recently. By developing TADF molecules with ortho-linked multiple donors-acceptor motif, near-degenerate excited states are created to enhance spin-orbit coupling, leading to improved luminescence performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Highly efficient luminescence from space-confined charge-transfer emitters

Xun Tang et al.

NATURE MATERIALS (2020)

Article Optics

Organic light emitters exhibiting very fast reverse intersystem crossing

Yoshimasa Wada et al.

NATURE PHOTONICS (2020)

Article Chemistry, Physical

Intramolecular Dimerization Quenching of Delayed Emission in Asymmetric D-D′-A TADF Emitters

Kai-Lin Woon et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2019)

Article Chemistry, Multidisciplinary

Multi-Resonance Induced Thermally Activated Delayed Fluorophores for Narrowband Green OLEDs

Yuewei Zhang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Multidisciplinary

Thermally Activated Delayed Fluorescence and Aggregation Induced Emission with Through-Space Charge Transfer

Hiroyuki Tsujimoto et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect

Shiyang Shao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes

Michael Y. Wong et al.

ADVANCED MATERIALS (2017)

Article Chemistry, Multidisciplinary

Multiwfn: A multifunctional wavefunction analyzer

Tian Lu et al.

JOURNAL OF COMPUTATIONAL CHEMISTRY (2012)