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Engineering Blue Fluorescent Bulk Emitters for OLEDs: Triplet Harvesting by Green Phosphors (2014)
Journal Article
Hofmann, S., Hummert, M., Scholz, R., Luschtinetz, R., Murawski, C., Will, P., …Gather, M. (2014). Engineering Blue Fluorescent Bulk Emitters for OLEDs: Triplet Harvesting by Green Phosphors. Chemistry of Materials, 26(7), 2414-2426

Triplet harvesting in organic light-emitting diodes (OLEDs) from a blue fluorescent to a green phosphorescent emitter is important for the development of highly efficient white OLEDs for lighting applications. Here, we report new blue fluorescent bul... Read More about Engineering Blue Fluorescent Bulk Emitters for OLEDs: Triplet Harvesting by Green Phosphors.

Effect of PEDOT-PSS resistivity and work function on PLED performance (2014)
Journal Article
Cook, J., Al-Attar, H., & Monkman, A. (2014). Effect of PEDOT-PSS resistivity and work function on PLED performance. Organic Electronics, 15(1), 245-250

The effect of a commonly used hole injection layer, poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT-PSS), on polymer light-emitting diode (PLED) performance has been investigated. A series of four different types of commercial PEDOT-PS... Read More about Effect of PEDOT-PSS resistivity and work function on PLED performance.

Photophysical Investigation of the Thermally Activated Delayed Emission from Films of m-MTDATA: PBD Exciplex (2014)
Journal Article
Graves, D., Jankus, V., Dias, F., & Monkman, A. (2014). Photophysical Investigation of the Thermally Activated Delayed Emission from Films of m-MTDATA: PBD Exciplex. Advanced Functional Materials, 24(16), 2343-2351

Understanding the delayed fluorescence mechanism behind the creation of emissive singlets from the non-emissive triplets in exciplexes is vital for the fabrication of highly efficient blue fluorescent emitters, and subsequent white light applications... Read More about Photophysical Investigation of the Thermally Activated Delayed Emission from Films of m-MTDATA: PBD Exciplex.

The key role of geminate electron-hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532 (2014)
Journal Article
Aydemir, M., Jankus, V., Dias, F., & Monkman, A. (2014). The key role of geminate electron-hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532. Physical Chemistry Chemical Physics, 16(39), 21543-21549

In this paper we investigate the delayed fluorescence (DF) phenomena in the widely used laser dye, rhodamine 6G, and its derivative ATTO-532 as a function of excitation energy using highly sensitive time-resolved gated nanosecond spectroscopy. Excita... Read More about The key role of geminate electron-hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532.

Dynamic scattering of electron vortex beams – A Bloch wave analysis (2014)
Journal Article
Mendis, B. (2015). Dynamic scattering of electron vortex beams – A Bloch wave analysis. Ultramicroscopy, 149, 74-85. https://doi.org/10.1016/j.ultramic.2014.11.001

Two important applications of electron vortex beams are in electron magnetic chiral dichroism (EMCD) measurements and nanoparticle manipulation. In both cases orbital angular momentum (〈Lz〉) transfer between the vortex beam and the specimen due to... Read More about Dynamic scattering of electron vortex beams – A Bloch wave analysis.

Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs (2014)
Journal Article
Zheng, Y., Batsanov, A., Fox, M., Al-Attar, H., Abdullah, K., Jankus, V., …Monkman, A. (2014). Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs. Angewandte Chemie International Edition, 53(43), 11616-11619. https://doi.org/10.1002/anie.201407475

Two phosphorescent dinuclear iridium(III) diastereomers (ΛΔ/ΔΛ) and (ΛΛ/ΔΔ) are readily separated by making use of their different solubilities in hot hexane. The bridging diarylhydrazide ligand plays an important role in the electrochemistry and pho... Read More about Bimetallic Cyclometalated Iridium(III) Diastereomers with Non-Innocent Bridging Ligands for High-Efficiency Phosphorescent OLEDs.

Highly Efficient TADF OLEDs: How the Emitter–Host Interaction Controls Both the Excited State Species and Electrical Properties of the Devices to Achieve Near 100% Triplet Harvesting and High Efficiency (2014)
Journal Article
Jankus, V., Data, P., Graves, D., McGuinness, C., Santos, J., Bryce, M., …Monkman, A. (2014). Highly Efficient TADF OLEDs: How the Emitter–Host Interaction Controls Both the Excited State Species and Electrical Properties of the Devices to Achieve Near 100% Triplet Harvesting and High Efficiency. Advanced Functional Materials, 24(39), 6178-6186. https://doi.org/10.1002/adfm.201400948

New emitters that can harvest both singlet and triplet excited states to give 100% internal conversion of charge into light, are required to replace Ir based phosphors in organic light emitting diodes (OLEDs). Molecules that have a charge transfer (C... Read More about Highly Efficient TADF OLEDs: How the Emitter–Host Interaction Controls Both the Excited State Species and Electrical Properties of the Devices to Achieve Near 100% Triplet Harvesting and High Efficiency.

Efficient deep blue fluorescent polymer light-emitting diodes (PLEDs) (2014)
Journal Article
Cook, J. H., Santos, J., Li, H., Al-Attar, H. A., Bryce, M. R., & Monkman, A. P. (2014). Efficient deep blue fluorescent polymer light-emitting diodes (PLEDs). Journal of Materials Chemistry C Materials for optical and electronic devices, 2(28), 5587-5592. https://doi.org/10.1039/c4tc00896k

A new series of deep blue/blue emitting co-polymers are reported. Poly(9,9-dihexylfluorene-3,6-diyl and 2,7-diyl-co-2,8-dihexyldibenzothiophene-S,S-dioxide-3,7-diyl) derivatives p(F-S) of varying composition have been synthesised. The effects of two... Read More about Efficient deep blue fluorescent polymer light-emitting diodes (PLEDs).

A medieval multiverse?: Mathematical modelling of the thirteenth century universe of Robert Grosseteste (2014)
Journal Article
Bower, R., McLeish, T., Tanner, B., Smithson, H., Panti, C., Lewis, N., & Gasper, G. (2014). A medieval multiverse?: Mathematical modelling of the thirteenth century universe of Robert Grosseteste. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 470(2167), Article 40025. https://doi.org/10.1098/rspa.2014.0025

In his treatise on light, written about 1225, Robert Grosseteste describes a cosmological model in which the universe is created in a big-bang-like explosion and subsequent condensation. He postulates that the fundamental coupling of light and matter... Read More about A medieval multiverse?: Mathematical modelling of the thirteenth century universe of Robert Grosseteste.

Ultrafast Dynamics and Computational Studies on Diaminodicyanoquinodimethanes (DADQs) (2014)
Journal Article
Szablewski, M., Fox, M., Dias, F., Namih, H., Snedden, E., King, S., …Pålsson, L. (2014). Ultrafast Dynamics and Computational Studies on Diaminodicyanoquinodimethanes (DADQs). Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 118(24), 6815-6828. https://doi.org/10.1021/jp411358d

Three diaminodicyanoquinodimethanes, 4-(R1R2C)-1-[(NC)2C]-C6H4 (R1,R2 = H2N, 1; R1 = 3,5-Me2-4-OCH4H6N–, R2 = H2N, 2; R1 = 3,5-Me2-4-OCH4H6N–, R2 = 4-Me-C5H9N, 3), were investigated using carbon-13 NMR, steady-state, and ultrafast transient absorptio... Read More about Ultrafast Dynamics and Computational Studies on Diaminodicyanoquinodimethanes (DADQs).

Color-coordinate system from a 13th-century account of rainbows (2014)
Journal Article
Smithson, H., Anderson, P., Dinkova-Bruun, G., Gasper, G., Laven, P., McLeish, T., …Tanner, B. (2014). Color-coordinate system from a 13th-century account of rainbows. Journal of the Optical Society of America A, 31(4), A341-A349. https://doi.org/10.1364/josaa.31.00a341

We present a new analysis of Robert Grosseteste’s account of color in his treatise De iride (On the Rainbow), dating from the early 13th century. The work explores color within the 3D framework set out in Grosseteste’s De colore [see J. Opt. Soc. Am.... Read More about Color-coordinate system from a 13th-century account of rainbows.

A gradient of matrix-bound FGF-2 and perlecan is available to lens epithelial cells (2014)
Journal Article
Wu, W., Tholozan, F., Goldberg, M., Bowen, L., Wu, J., & Quinlan, R. (2014). A gradient of matrix-bound FGF-2 and perlecan is available to lens epithelial cells. Experimental Eye Research, 120, 10-14. https://doi.org/10.1016/j.exer.2013.12.004

Fibroblast growth factors play a key role in regulating lens epithelial cell proliferation and differentiation via an anteroposterior gradient that exists between the aqueous and vitreous humours. FGF-2 is the most important for lens epithelial cell... Read More about A gradient of matrix-bound FGF-2 and perlecan is available to lens epithelial cells.

Characterisation of Charge Conduction Networks in Poly(3-hexylthiophene)/Polystyrene Blends using Noise Spectroscopy (2014)
Journal Article
Williams, A., Farrar, P., Gallant, A., Atkinson, D., & Groves, C. (2014). Characterisation of Charge Conduction Networks in Poly(3-hexylthiophene)/Polystyrene Blends using Noise Spectroscopy. Journal of Materials Chemistry C Materials for optical and electronic devices, 2(9), 1742-1748. https://doi.org/10.1039/c3tc31849d

1/f noise spectroscopy is used to investigate charge conduction networks within polymer blend space-charge-limited diodes (SCLDs) fabricated from regioregular poly(3-hexylthiophene) (P3HT) and either isotactic-polystyrene (i-PS) or amorphous-polystyr... Read More about Characterisation of Charge Conduction Networks in Poly(3-hexylthiophene)/Polystyrene Blends using Noise Spectroscopy.