Dr Andrew Danos
Lecturer in Experimental Condensed Matter Physics
School of Physical and Chemical Sciences
Queen Mary University of London
Queen Mary University of London
Research
Organic Electronics, Spectroscopy, Physical Chemistry
Interests
Fundamental studies of photophysical processes of molecular excitons, such as triplet-triplet annihilation, thermally activated delayed fluorescence, and room temperature phosphorescence. Designing and interpreting time-resolved and temperature-dependent emission/absorption spectroscopy of these materials, building on wide skills in laser spectroscopy. Parallel expertise in device fabrication and characterisation support the application of these materials in optoelectronic devices such as OLEDs.Publications
Publications of specific relevance to the Centre for Experimental and Applied Physics2024
The Golden Age of Thermally Activated Delayed Fluorescence Materials: Design and ExploitationDos Santos JM, Hall D, Basumatary B, Bryden M, Chen D, Choudhary P, Comerford T, Crovini E, Danos A, De J, Diesing S, Fatahi M, Griffin M, Gupta AK, Hafeez H, Hämmerling L, Hanover E, Haug J, Heil T, Karthik D, et al.
Chemical Reviews, American Chemical Society (Acs)
12-12-2024
Separating triplet exciton diffusion from triplet–triplet annihilation by the introduction of a mediatorCarrod AJ, Berghuis AM, Gopalakrishnan VN, Monkman A, Danos A and Börjesson K
Chemical Science, Royal Society of Chemistry (Rsc) (Immediate Access)
09-12-2024
Design and performance of sulfur and selenium-substituted triarylboron D3-A TADF emitters for OLED applicationsKarakurt O, Demirgezer EF, Dastemir M, Cakmaktepe SC, Miranda-Salinas H, Aksoy E, Danos A, Monkman A, Yildirim E and Cirpan A
Organic Electronics, Elsevier vol. 134
01-11-2024
Diffusion‐Free Intramolecular Triplet–Triplet Annihilation Contributes to the Enhanced Exciton Utilization in OLEDsMattiello S, Danos A, Stavrou K, Ronchi A, Baranovski R, Florenzano D, Meinardi F, Beverina L, Monkman A and Monguzzi A
Advanced Optical Materials, Wiley vol. 12 (33)
09-10-2024
Exciplex, Not Heavy-Atom Effect, Controls the Triplet Dynamics of a Series of Sulfur-Containing Thermally Activated Delayed Fluorescence MoleculesÖner S, Kuila S, Stavrou K, Danos A, Fox MA, Monkman AP and Bryce MR
Chemistry of Materials, American Chemical Society (Acs) vol. 36 (15), 7135-7150.
02-08-2024
Key requirements for ultraefficient sensitization in hyperfluorescence organic light-emitting diodesStavrou K, Franca LG, Danos A and Monkman AP
Nature Photonics, Springer Nature vol. 18 (6), 554-561.
13-02-2024
Exploring the Early Time Behavior of the Excited States of an Archetype Thermally Activated Delayed Fluorescence MoleculeFranca LG, Danos A, Saxena R, Kuila S, Stavrou K, Li C, Wedler S, Köhler A and Monkman AP
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 15 (6), 1734-1740.
07-02-2024
Isomeric modulation of thermally activated delayed fluorescence in dibenzo[ a , c ]phenazine-based (deep) red emittersBrebels S, Cardeynaels T, Jackers L, Kuila S, Penxten H, Salthouse RJ, Danos A, Monkman AP, Champagne B and Maes W
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 12 (25), 9255-9265.
01-01-2024
Peripheral halogen atoms in multi-resonant thermally activated delayed fluorescence emitters: the role of heavy atoms in intermolecular interactions and spin orbit couplingMiranda-Salinas H, Wang J, Danos A, Matulaitis T, Stavrou K, Monkman AP and Zysman-Colman E
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 12 (6), 1996-2006.
01-01-2024
2023
Quantifying Molecular Disorder in Tri-Isopropyl Silane (TIPS) Pentacene Using Variable Coherence Transmission Electron MicroscopyAlanazi F, Eggeman AS, Stavrou K, Danos A, Monkman AP and Mendis BG
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 14 (36), 8183-8190.
06-09-2023
Balanced Energy Gaps as a Key Design Rule for Solution‐Phase Organic Room Temperature PhosphorescenceParedis S, Cardeynaels T, Kuila S, Deckers J, Van Landeghem M, Vandewal K, Danos A, Monkman AP, Champagne B and Maes W
Chemistry - a European Journal, Wiley vol. 29 (42)
13-06-2023
Azaborine as a Versatile Weak Donor for Thermally Activated Delayed FluorescenceSudhakar P, Kuila S, Stavrou K, Danos A, Slawin AMZ, Monkman A and Zysman-Colman E
Acs Applied Materials & Interfaces, American Chemical Society (Acs) vol. 15 (21), 25806-25818.
18-05-2023
Donor, Acceptor, and Molecular Charge Transfer Emission All in One MoleculeFranca LG, Danos A and Monkman A
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 14 (11), 2764-2771.
10-03-2023
Rupturing aromaticity by periphery overcrowdingSaha PK, Mallick A, Turley AT, Bismillah AN, Danos A, Monkman AP, Avestro A-J, Yufit DS and McGonigal PR
Nature Chemistry, Springer Nature vol. 15 (4), 516-525.
06-03-2023
Covalently linked pyrene antennas for optically dense yet aggregation-resistant light-harvesting systemsSalah L, Makhseed S, Ghazal B, Abdel Nazeer A, Etherington MK, Ponseca CS, Li C, Monkman AP, Danos A and Shuaib A
Physical Chemistry Chemical Physics, Royal Society of Chemistry (Rsc) vol. 25 (36), 24878-24882.
01-01-2023
Intramolecular locking and coumarin insertion: a stepwise approach for TADF designParedis S, Cardeynaels T, Brebels S, Deckers J, Kuila S, Lathouwers A, Van Landeghem M, Vandewal K, Danos A, Monkman AP, Champagne B and Maes W
Physical Chemistry Chemical Physics, Royal Society of Chemistry (Rsc) vol. 25 (43), 29842-29849.
01-01-2023
2022
Rational Molecular Design Enables Efficient Blue TADF−OLEDs with Flexible Graphene SubstrateSharif P, Alemdar E, Ozturk S, Caylan O, Haciefendioglu T, Buke G, Aydemir M, Danos A, Monkman AP, Yildirim E, Gunbas G, Cirpan A and Oral A
Advanced Functional Materials, Wiley vol. 32 (47)
22-09-2022
Intramolecular Hydrogen Bonding in Thermally Activated Delayed Fluorescence Emitters: Is There Evidence Beyond Reasonable Doubt?Hempe M, Kukhta NA, Danos A, Batsanov AS, Monkman AP and Bryce MR
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 13 (35), 8221-8227.
25-08-2022
Laplace Transform Fitting as a Tool To Uncover Distributions of Reverse Intersystem Crossing Rates in TADF SystemsKelly D, Franca LG, Stavrou K, Danos A and Monkman AP
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 13 (30), 6981-6986.
26-07-2022
Emission and Absorption Tuning in TADF B,N‐Doped Heptacenes: Toward Ideal‐Blue Hyperfluorescent OLEDsStavrou K, Suresh SM, Hall D, Danos A, Kukhta NA, Slawin AMZ, Warriner S, Beljonne D, Olivier Y, Monkman A and Zysman‐Colman E
Advanced Optical Materials, Wiley vol. 10 (17)
14-06-2022
Effects of donor position and multiple charge transfer pathways in asymmetric pyridyl-sulfonyl TADF emittersHaykir G, Aydemir M, Tekin A, Tekin E, Danos A, Yuksel F, Hizal G, Monkman AP and Turksoy F
Materials Today Communications, Elsevier vol. 31
01-06-2022
Extended Conjugation Attenuates the Quenching of Aggregation‐Induced Emitters by Photocyclization PathwaysTurley AT, Saha PK, Danos A, Bismillah AN, Monkman AP, Yufit DS, Curchod BFE, Etherington MK and McGonigal PR
Angewandte Chemie International Edition, Wiley vol. 61 (24)
13-04-2022
The Effect of Imide Substituents on the Excited State Properties of Perylene Diimide DerivativesAKSOY E, DANOS A, Lİ C, MONKMAN A and VARLIKLI C
Turkish Journal of Science and Technology, Firat Universitesi vol. 17 (1), 11-21.
20-03-2022
Novel D–A chromophores with condensed 1,2,4-triazine system simultaneously display thermally activated delayed fluorescence and crystallization-induced phosphorescenceMaggiore A, Tan X, Brosseau A, Danos A, Miomandre F, Monkman AP, Audebert P and Clavier G
Physical Chemistry Chemical Physics, Royal Society of Chemistry (Rsc) vol. 24 (29), 17770-17781.
01-01-2022
Diindolocarbazole – achieving multiresonant thermally activated delayed fluorescence without the need for acceptor unitsHall D, Stavrou K, Duda E, Danos A, Bagnich S, Warriner S, Slawin AMZ, Beljonne D, Köhler A, Monkman A, Olivier Y and Zysman-Colman E
Materials Horizons, Royal Society of Chemistry (Rsc) vol. 9 (3), 1068-1080.
01-01-2022
Bridge control of photophysical properties in benzothiazole-phenoxazine emitters – from thermally activated delayed fluorescence to room temperature phosphorescenceParedis S, Cardeynaels T, Deckers J, Danos A, Vanderzande D, Monkman AP, Champagne B and Maes W
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 10 (12), 4775-4784.
01-01-2022
Determining non-radiative decay rates in TADF compounds using coupled transient and steady state optical dataSem S, Jenatsch S, Stavrou K, Danos A, Monkman AP and Ruhstaller B
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 10 (12), 4878-4885.
01-01-2022
Spiro donor–acceptor TADF emitters: naked TADF free from inhomogeneity caused by donor acceptor bridge bond disorder. Fast rISC and invariant photophysics in solid state hostsFranca LG, Danos A and Monkman A
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 10 (4), 1313-1325.
01-01-2022
Not the sum of their parts: understanding multi-donor interactions in symmetric and asymmetric TADF emittersDanos A, Gudeika D, Kukhta NA, Lygaitis R, Colella M, Higginbotham HF, Bismillah AN, McGonigal PR, Grazulevicius JV and Monkman AP
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 10 (12), 4737-4747.
01-01-2022
2021
Effects of asymmetric acceptor and donor positioning in deep blue pyridyl-sulfonyl based TADF emittersHaykir G, Aydemir M, Danos A, Gumus S, Hizal G, Monkman AP and Turksoy F
Dyes and Pigments, Elsevier vol. 194
01-10-2021
Silylethynyl Substitution for Preventing Aggregate Formation in Perylene DiimidesAksoy E, Danos A, Li C, Monkman AP and Varlikli C
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 125 (23), 13041-13049.
02-06-2021
Difluorodithieno[3,2-a:2′,3′-c]phenazine as a strong acceptor for materials displaying thermally activated delayed fluorescence or room temperature phosphorescenceCardeynaels T, Paredis S, Danos A, Harrison A, Deckers J, Brebels S, Lutsen L, Vanderzande D, Monkman AP, Champagne B and Maes W
Dyes and Pigments, Elsevier vol. 190
01-06-2021
Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence MaterialsHempe M, Kukhta NA, Danos A, Fox MA, Batsanov AS, Monkman AP and Bryce MR
Chemistry of Materials, American Chemical Society (Acs) vol. 33 (9), 3066-3080.
28-04-2021
Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host MaterialsWright IA, Danos A, Montanaro S, Batsanov AS, Monkman AP and Bryce MR
Chemistry - a European Journal, Wiley vol. 27 (21), 6545-6556.
10-03-2021
Hot Vibrational States in a High-Performance Multiple Resonance Emitter and the Effect of Excimer Quenching on Organic Light-Emitting DiodesStavrou K, Danos A, Hama T, Hatakeyama T and Monkman A
Acs Applied Materials & Interfaces, American Chemical Society (Acs) vol. 13 (7), 8643-8655.
08-02-2021
The Critical Role of nπ* States in the Photophysics and Thermally Activated Delayed Fluorescence of Spiro Acridine-AnthracenoneFranca LG, Long Y, Li C, Danos A and Monkman A
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 12 (5), 1490-1500.
03-02-2021
Benzo[1,2-b:4,5-b']dithiophene as a weak donor component for push-pull materials displaying thermally activated delayed fluorescence or room temperature phosphorescenceCardeynaels T, Paredis S, Danos A, Vanderzande D, Monkman AP, Champagne B and Maes W
Dyes and Pigments, Elsevier vol. 186
01-02-2021
Are the rates of dexter transfer in TADF hyperfluorescence systems optically accessible?Haase N, Danos A, Pflumm C, Stachelek P, Brütting W and Monkman AP
Materials Horizons, Royal Society of Chemistry (Rsc) vol. 8 (6), 1805-1815.
01-01-2021
Suppressing dimer formation by increasing conformational freedom in multi-carbazole thermally activated delayed fluorescence emittersSalah L, Etherington MK, Shuaib A, Danos A, Nazeer AA, Ghazal B, Prlj A, Turley AT, Mallick A, McGonigal PR, Curchod BFE, Monkman AP and Makhseed S
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 9 (1), 189-198.
01-01-2021
2020
Navigating CIE Space for Efficient TADF Downconversion WOLEDsAksoy E, Danos A, Varlikli C and Monkman AP
Dyes and Pigments, Elsevier vol. 183
01-12-2020
Excited State Dynamics of Thermally Activated Delayed Fluorescence from an Excited State Intramolecular Proton Transfer SystemLong Y, Mamada M, Li C, dos Santos PL, Colella M, Danos A, Adachi C and Monkman A
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 11 (9), 3305-3312.
07-04-2020
Modulation of charge transfer by N -alkylation to control photoluminescence energy and quantum yieldTurley AT, Danos A, Prlj A, Monkman AP, Curchod BFE, McGonigal PR and Etherington MK
Chemical Science, Royal Society of Chemistry (Rsc) vol. 11 (27), 6990-6995.
01-01-2020
Exploiting trifluoromethyl substituents for tuning orbital character of singlet and triplet states to increase the rate of thermally activated delayed fluorescenceWard JS, Danos A, Stachelek P, Fox MA, Batsanov AS, Monkman AP and Bryce MR
Materials Chemistry Frontiers, Royal Society of Chemistry (Rsc) vol. 4 (12), 3602-3615.
01-01-2020
2019
Molecular Design Strategies for Color Tuning of Blue TADF EmittersStachelek P, Ward JS, dos Santos PL, Danos A, Colella M, Haase N, Raynes SJ, Batsanov AS, Bryce MR and Monkman AP
Acs Applied Materials & Interfaces, American Chemical Society (Acs) vol. 11 (30), 27125-27133.
17-07-2019
Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole DonorsColella M, Danos A and Monkman AP
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 123 (28), 17318-17324.
25-06-2019
Electroabsorption Spectroscopy as a Tool for Probing Charge Transfer and State Mixing in Thermally Activated Delayed Fluorescence EmittersPereira DDS, Menelaou C, Danos A, Marian C and Monkman AP
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 10 (12), 3205-3211.
22-05-2019
Persistent Dimer Emission in Thermally Activated Delayed Fluorescence MaterialsEtherington MK, Kukhta NA, Higginbotham HF, Danos A, Bismillah AN, Graves DR, McGonigal PR, Haase N, Morherr A, Batsanov AS, Pflumm C, Bhalla V, Bryce MR and Monkman AP
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 123 (17), 11109-11117.
03-04-2019
Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF ExciplexColella M, Danos A and Monkman AP
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 10 (4), 793-798.
06-02-2019
Balancing charge-transfer strength and triplet states for deep-blue thermally activated delayed fluorescence with an unconventional electron rich dibenzothiophene acceptorHuang R, Kukhta NA, Ward JS, Danos A, Batsanov AS, Bryce MR and Dias FB
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 7 (42), 13224-13234.
01-01-2019
Revealing resonance effects and intramolecular dipole interactions in the positional isomers of benzonitrile-core thermally activated delayed fluorescence materialsKukhta NA, Higginbotham HF, Matulaitis T, Danos A, Bismillah AN, Haase N, Etherington MK, Yufit DS, McGonigal PR, Gražulevičius JV and Monkman AP
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 7 (30), 9184-9194.
01-01-2019
2018
Kinetic Modeling of Transient Photoluminescence from Thermally Activated Delayed FluorescenceHaase N, Danos A, Pflumm C, Morherr A, Stachelek P, Mekic A, Brütting W and Monkman AP
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 122 (51), 29173-29179.
03-12-2018
2017
Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave ConductivityGuse JA, Jones TW, Danos A and McCamey DR
Journal of Visualized Experiments, Myjove (121)
06-03-2017
2016
Energy transfer in pendant perylene diimide copolymersDavis NJLK, MacQueen RW, Roberts DA, Danos A, Dehn S, Perrier S and Schmidt TW
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 4 (35), 8270-8275.
01-01-2016
2015
Deuteration of Perylene Enhances Photochemical Upconversion EfficiencyDanos A, MacQueen RW, Cheng YY, Dvořák M, Darwish TA, McCamey DR and Schmidt TW
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 6 (15), 3061-3066.
22-07-2015
2014
Action spectrum experiment for the measurement of incoherent photon upconversion efficiency under sun-like excitationMacQueen RW, Cheng YY, Danos AN, Lips K and Schmidt TW
Rsc Advances, Royal Society of Chemistry (Rsc) vol. 4 (95), 52749-52756.
01-01-2014
2013
An agnostic approachKeevers TL, Danos A, Schmidt TW and McCamey DR
Nature Nanotechnology, Springer Nature vol. 8 (12), 886-887.
01-12-2013
2012
Photochemical Upconversion Enhanced Solar Cells: Effect of a Back ReflectorSchulze TF, Cheng YY, Fückel B, MacQueen RW, Danos A, Davis NJLK, Tayebjee MJY, Khoury T, Clady RGCR, Ekins-Daukes NJ, Crossley MJ, Stannowski B, Lips K and Schmidt TW
Australian Journal of Chemistry, Csiro Publishing vol. 65 (5), 480-485.
01-01-2012
2009
Binarity and multiperiodicity in high‐amplitude δ Scuti starsDerekas A, Kiss LL, Bedding TR, Ashley MCB, Csák B, Danos A, Fernandez JM, Fűrész G, Mészáros S, Szabó GM, Szakáts R, Székely P and Szatmáry K
Monthly Notices of The Royal Astronomical Society, Oxford University Press (Oup) vol. 394 (2), 995-1008.
18-02-2009
Grants
Grants of specific relevance to the Centre for Experimental and Applied PhysicsAdditional QMUL-OPERA research exchangeAndrew Danos
£2,500 Great Britain Sasakawa Foundation
01-03-2025 - 30-10-2025