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Machine learning approach to muon spectroscopy analysis (2021)
Journal Article
Tula, T., Möller, G., Quintanilla, J., Giblin, S., Hillier, A., McCabe, E., …Gibson, S. (2021). Machine learning approach to muon spectroscopy analysis. Journal of Physics: Condensed Matter, 33(19), Article 194002. https://doi.org/10.1088/1361-648x/abe39e

In recent years, articial intelligence techniques have proved to be very successful when applied to problems in physical sciences. Here we apply an unsupervised machine learning (ML) algorithm called principal component analysis (PCA) as a tool to an... Read More about Machine learning approach to muon spectroscopy analysis.

Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials (2021)
Journal Article
Hempe, M., Kukhta, N. A., Danos, A., Fox, M. A., Batsanov, A. S., Monkman, A. P., & Bryce, M. R. (2021). Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials. Chemistry of Materials, 33(9), 3066-3080. https://doi.org/10.1021/acs.chemmater.0c03783

We investigate a series of D–A molecules consisting of spiro[acridan-9,9′-fluorene] as the donor and 2-phenylenepyrimidine as the acceptor. In two of the materials, a spiro center effectively electronically isolates the D unit from (consequently) opt... Read More about Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials.

Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases (2020)
Journal Article
Cascos, V. A., Roberts-Watts, J., Skingle, C., Levin, I., Zhang, W., Halasyamani, P. S., …McCabe, E. E. (2020). Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases. Chemistry of Materials, 32(19), 8700-8712. https://doi.org/10.1021/acs.chemmater.0c03326

The Dion-Jacobson (DJ) family of perovskite-related materials have recently attracted interest due to their polar structures and properties, resulting from hybrid-improper mechanisms for ferroelectricity in n = 2 systems and from proper mechanisms in... Read More about Tuning between Proper and Hybrid-Improper Mechanisms for Polar Behavior in CsLn2Ti2NbO10 Dion-Jacobson Phases.

Coupled magnetic nanostructures: Engineering lattice configurations (2021)
Journal Article
Talapatra, A., & Adeyeye, A. (2021). Coupled magnetic nanostructures: Engineering lattice configurations. Applied Physics Letters, 118(17), Article 172404. https://doi.org/10.1063/5.0045235

We present a systematic investigation of tunable magnetization dynamics of coupled magnetic nanostructures, arranged in one-dimensional arrays of horizontally and vertically coupled linear chains and in two-dimensional arrays of square artificial spi... Read More about Coupled magnetic nanostructures: Engineering lattice configurations.

Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6 (2021)
Journal Article
Feng, H., Kang, C., Manuel, P., Orlandi, F., Su, Y., Chen, J., …Greenblatt, M. (2021). Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6. Chemistry of Materials, 33(11), 4188-4195. https://doi.org/10.1021/acs.chemmater.1c01032

A Polycrystalline sample of Pb2NiOsO6 was synthesized by high-pressure (6 GPa) and high-temperature (1575 K) conditions. Pb2NiOsO6 crystallizes in a monoclinic double perovskite structure with a centrosymmetric space group P21/n at room temperature.... Read More about Antiferromagnetic order breaks inversion symmetry in metallic double perovskite, Pb2NiOsO6.

Reconfigurable and self-biased magnonic metamaterials (2020)
Journal Article
Haldar, A., & Adeyeye, A. O. (2020). Reconfigurable and self-biased magnonic metamaterials. Journal of Applied Physics, 128(24), Article 240902. https://doi.org/10.1063/5.0033254

In magnonics, magnetic waves and oscillations are exploited for signal and information processing at microwave frequencies. A magnonic metamaterial is employed to configure different microwave bands by spatial engineering of magnetizations using diff... Read More about Reconfigurable and self-biased magnonic metamaterials.

Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230) (2021)
Journal Article
White, R. C., Gasper, G. E., McLeish, T. C., Tanner, B. K., Harvey, J. S., Sønnesyn, S. O., …Smithson, H. E. (2021). Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230). Isis: A Journal of the History of Science Society, 112(1), 93-107. https://doi.org/10.1086/713724

In his treatise On the Rainbow (De iride), composed nearly four hundred years before the first known telescope, the English polymath Robert Grosseteste identified three striking optical effects: distant objects can be rendered close by; close-by larg... Read More about Magnifying Grains of Sand, Seeds, and Blades of Grass: Optical Effects in Robert Grosseteste’s De iride (On the Rainbow) (circa 1228–1230).

End-to-end communication in a linear supermolecule with a BOPHY centre and N,N-dimethylanilino-based terminals (2018)
Journal Article
Woodford, O. J., Stachelek, P., Ziessel, R., Algoazy, N., Knight, J. G., & Harriman, A. (2018). End-to-end communication in a linear supermolecule with a BOPHY centre and N,N-dimethylanilino-based terminals. New Journal of Chemistry, 42(7), https://doi.org/10.1039/c7nj04654e

The recently introduced BOPHY (i.e., symmetrical bis(pyrrole-BF2)) chromophore is a highly attractive building block for constructing linear molecules with extended π-conjugation running along the molecular backbone. In order to assess the level of e... Read More about End-to-end communication in a linear supermolecule with a BOPHY centre and N,N-dimethylanilino-based terminals.

Solvent-Driven Conformational Exchange for Amide-Linked Bichromophoric BODIPY Derivatives (2016)
Journal Article
Thakare, S., Stachelek, P., Mula, S., More, A. B., Chattopadhyay, S., Ray, A. K., …Harriman, A. (2016). Solvent-Driven Conformational Exchange for Amide-Linked Bichromophoric BODIPY Derivatives. Chemistry - A European Journal, 22(40), 14356-14366. https://doi.org/10.1002/chem.201602354

The fluorescence lifetime and quantum yield are seen to depend in an unexpected manner on the nature of the solvent for a pair of tripartite molecules composed of two identical boron dipyrromethene (BODIPY) residues attached to a 1,10-phenanthroline... Read More about Solvent-Driven Conformational Exchange for Amide-Linked Bichromophoric BODIPY Derivatives.

Charge-Recombination Fluorescence from Push-Pull Electronic Systems Constructed around Amino-Substituted Styryl-BODIPY Dyes (2013)
Journal Article
Nano, A., Ziessel, R., Stachelek, P., & Harriman, A. (2013). Charge-Recombination Fluorescence from Push-Pull Electronic Systems Constructed around Amino-Substituted Styryl-BODIPY Dyes. Chemistry - A European Journal, 19(40), 13528-13537. https://doi.org/10.1002/chem.201301045

A small series of donor–acceptor molecular dyads has been synthesized and fully characterized. In each case, the acceptor is a dicyanovinyl unit and the donor is a boron dipyrromethene (BODIPY) dye equipped with a single styryl arm bearing a terminal... Read More about Charge-Recombination Fluorescence from Push-Pull Electronic Systems Constructed around Amino-Substituted Styryl-BODIPY Dyes.

LightBox: a multiwell plate illumination system for photoactive molecule characterization (2021)
Journal Article
Bounds, A., Bailey, R., Adams, C., Callaghan, D., & Girkin, J. (2021). LightBox: a multiwell plate illumination system for photoactive molecule characterization. Journal of Biophotonics, 14(5), Article e202000481. https://doi.org/10.1002/jbio.202000481

Multiwell plates (MWPs) are the workhorses of the life sciences. However, biophotonics research with MWPs is limited, in part due to the lack of equipment suitable for photo‐irradiation of photoactive molecules in a MWP‐suitable, high‐throughput mann... Read More about LightBox: a multiwell plate illumination system for photoactive molecule characterization.

The Critical Role of nπ* States in the Photophysics and Thermally Activated Delayed Fluorescence of Spiro Acridine-Anthracenone (2021)
Journal Article
Gomes Franca, L., Long, Y., Li, C., Danos, A., & Monkman, A. (2021). The Critical Role of nπ* States in the Photophysics and Thermally Activated Delayed Fluorescence of Spiro Acridine-Anthracenone. Journal of Physical Chemistry Letters, 12(5), 1490-1500. https://doi.org/10.1021/acs.jpclett.0c03314

The molecular photophysics and thermally activated delayed fluorescence (TADF) in spiro compounds are distinct because of the rigid orthogonal C–C bridging bond between donor and acceptor. The photophysics is found to be highly complex, with unpreced... Read More about The Critical Role of nπ* States in the Photophysics and Thermally Activated Delayed Fluorescence of Spiro Acridine-Anthracenone.

Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible? (2021)
Journal Article
Haase, N., Danos, A., Pflumm, C., Stachelek, P., Brütting, W., & Monkman, A. P. (2021). Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible?. Materials Horizons, 8(6), 1805-1815. https://doi.org/10.1039/d0mh01666g

Seemingly not, but for unexpected reasons. Combining the triplet harvesting properties of TADF materials with the fast emission rates and colour purity of fluorescent emitters is attractive for developing high performance OLEDs. In this “hyperfluores... Read More about Are the Rates of Dexter Transfer in TADF Hyperfluorescence Systems Optically Accessible?.

Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials (2021)
Journal Article
Wright, I. A., Danos, A., Montanaro, S., Batsanov, A. S., Monkman, A. P., & Bryce, M. R. (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 Materials. Chemistry - A European Journal, 27(21), 6545-6556. https://doi.org/10.1002/chem.202100036

A series of four heterocyclic dimers has been synthesized, with twisted geometries imposed across the central linking bond by ortho‐alkoxy chains. These include two isomeric bicarbazoles, a bis(dibenzothiophene‐S,S‐dioxide) and a bis(thioxanthene‐S,S... Read More about Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials.