Research

The Etherington Lab advances organic photonics through fundamental photophysical understanding of thermally activated delayed fluorescence (TADF) materials, charge transfer states, and light-emitting molecular systems.

At a Glance

30 Publications
2700+ Citations
Β£200K+ Funding Secured
X () Collaborations (Countries)
3 Active PhDs

Our Research Mission

We investigate the fundamental photophysics of organic light-emitting materials, with a particular focus on thermally activated delayed fluorescence (TADF). Our research spans from molecular design principles to device applications, combining advanced spectroscopy, computational modeling, and synthesis. We aim to understand and control excited state dynamics to enable next-generation technologies in displays, lighting, and bioimaging.

Research Capabilities

State-of-the-art facilities and unique expertise in organic photonics characterization

πŸ”¬
Advanced Spectroscopy

Fluorolog-QM system with time-resolved capabilities (TCSPC), steady-state measurements and photoluminescecne quantum yield (PLQY)

❄️
Cryogenic Systems

Low-temperature cryostat for spectroscopy to liquid nitrogen temperatures.

πŸ“
Photophysical Characterization

Complete photophysical package: Ξ”EST, PLQYs, excited state kinetics, emission/absorption spectra

International Collaborations

πŸ‡¬πŸ‡§ Durham University

Prof. Andy Monkman

Long-standing collaboration on TADF materials and photophysics. Joint publications in Nature Communcations, JACS and Angewandte Chemie.

πŸ‡―πŸ‡΅ University of Osaka

Dr Youhei Takeda

International collaboration funded by Japan Science and Technology Agency on advanced TADF systems for bioimaging

πŸ‡―πŸ‡΅ Kitasato University

Prof. Go Watanabe

Molecular dynamics of quinine salts

πŸ‡¬πŸ‡§ University of Oxford

Prof. Paul McGonigal

Molecular design and synthesis expertise. Joint work on aggregation-induced emission systems with publications in JACS, Angewandte Chemie and Chemical Science.

Research Themes

πŸ”¬
Thermally Activated Delayed Fluorescence (TADF)

Investigating the fundamental photophysics of TADF materials for next-generation OLEDs and novel light-emitting applications. Our work focuses on understanding spin-vibronic coupling and optimizing reverse intersystem crossing rates.

Key Techniques: Time-resolved spectroscopy, Low-temperature photoluminescence
Recent Work: Suppression of Dexter transfer by covalent encapsulation for efficient matrix-free narrowband deep blue hyperfluorescent OLEDs (Nature Materials, 2024)
⚑
Charge Transfer States & Molecular Design

Exploring the relationship between molecular architecture and charge transfer state properties. We design novel donor-acceptor systems to control energy gaps and emission characteristics for targeted applications.

Key Techniques: Organic synthesis, Photophysical characterization
Recent Work: A Modular Approach to Tuning Emissive N-Quinolyl Through-Space Charge Transfer States Using sp3-Scaffolds (The Journal of Physical Chemistry B, 2024)
πŸ“Š
Singlet-Triplet Energy Gaps

Developing spectroscopic approaches to accurately measure Ξ”EST in organic emitters. Understanding these energy gaps is crucial for designing efficient TADF materials and predicting device performance.

Key Techniques: Steady-state spectroscopy, Time-resolved Emission Spectra (TRES), Low-temperature photoluminescence
Recent Work:
🧬
Bioimaging Applications

Applying our fundamental understanding of organic emitters to develop new materials for biological imaging. Collaborating with the Hudson group and the Takeda group as part of a JST-funded ASPIRE grant to create TADF-based probes with enhanced imaging capabilities.

Key Techniques: Photoluminescence spectroscopy, Biocompatibility testing
Recent Work: JST ASPIRE Grant

Featured Publications

J. Phys. Chem. B (2024)

A Modular Approach to Tuning Emissive N-Quinolyl Through-Space Charge Transfer States Using sp3-Scaffolds

Fundamental structure-property relationships regarding the N-aryl distance required for charge transfer

J. Mater. Chem. C (2022)

From phosphorescence to delayed fluorescence in one step: tuning photophysical properties by quaternisation of an sp2-hybridised nitrogen atom

Breakthrough in tuning photophysical properties through molecular modification.

Recent Seminars & Talks

🎀 Kyushu Univerity - Japan (2024)

Presented latest work on charge transfer and TADF for Prof. Adachi's group at OPERA and Prof. Albrecht's group at Kyushu University.

✈️ University of Osaka - Japan (2025)

Presented latest work on charge transfer and TADF in the Department of Chemistry at the University of Osaka.

πŸ† Kitasato University - Japan (2025)

Presented latest work on charge transfer and TADF for Prof. Watanabe's group at Kitasato University

Research Impact

πŸ’‘ Energy-Efficient Displays

TADF materials enable OLED technology with improved efficiency for smartphones, TVs, and flexible displays.

πŸ₯ Medical Imaging

Developing organic emitters for biological imaging applications to enable visualization of cellular processes and disease markers.

🌱 Sustainable Materials

Purely organic light-emitting materials are alternatives to precious metal-based systems, reducing environmental impact.

Research Projects

Active Projects

TADF systems for bioimaging applications

2025 - Present | JST ASPIRE

Investigating dibenzophenazine-based emitters showing both local and charge transfer emission. Understanding mechanisms for bioimaging applications.

Cage Linker Systems for charge transfer, room-temperature phosphorescence and TADF

2023 - Present | PhD Project (Aidan Matthews)

Designing caged-chromophore systems to understand fundamentals of charge transfer for OLED applications.

Solid-state synthesis for pure and doped BaS for optoelectronic applications

2022 - Present | PhD Project (Will Tetlow)

Greener and alternative synthetic routes for preparation of chalcogenide perovskite materials for optoelectronic applications.

Past Projects

Through-Space CT in N-Quinolyl

2021 - 2025 |

Modular approach to tuning emissive through-space charge transfer states using sp3-scaffolds.

Homoconjugation in TADF

2020 - 2022 | Completed

Simultaneous enhancement of TADF and photoluminescence quantum yield via homoconjugation. Collaboration with Loughborough and Edinburgh

Quaternisation Control

2019 - 2022 | Completed

From phosphorescence to delayed fluorescence in one step via quaternisation of sp2-hybridised nitrogen. Published in J. Mater. Chem. C.

Research Funding

Current Funding

JST ASPIRE International Collaboration

2023 - 2026 | Japan Science & Technology Agency

Multi-year international collaboration program with University of Osaka on advanced TADF systems and device applications.

Funding History

Royal Society Research Grant

|

Meet the Team

πŸ‘¨β€πŸ”¬ Principal Investigator

Dr Marc Etherington
Assistant Professor

Spectroscopist specializing in organic photonics, TADF materials, and photophysical chemistry.

πŸŽ“ PhD Students (3)

Ruth Pollard - N-quinolyl charge transfer systems
Aidan Matthews - Cage linker systems
Will Tetlow - Chalcogenide perovskites

πŸ† Recent Achievements

Ruth Pollard: RSC Poster Prize (2024)
International presentations at ICEL 2024
First-author publications for students

Join Our Research Group

Select your interest below to explore opportunities