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Highly electron deficient diketopyrrolopyrroles (2023)
Journal Article
Humphreys, J., Malagreca, F., Hume, P. A., Davies, E. S., Argent, S. P., Bradshaw, T. D., & Amabilino, D. B. (2023). Highly electron deficient diketopyrrolopyrroles. Chemical Communications, 59(12), 1613-1616. https://doi.org/10.1039/d2cc06770f

The synthesis, spectroelectrochemical and structural characteristics of highly electron-accepting diketopyrrrolopyrrole (DPP) molecules with adjoining pyridinium rings is reported, along with an assessment of their toxicity, which is apparently low.... Read More about Highly electron deficient diketopyrrolopyrroles.

A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate (2022)
Journal Article
Amin, S. S., Cameron, J. M., Winslow, M., Davies, E. S., Argent, S. P., Robinson, D., & Newton, G. N. (2022). A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate. European Journal of Inorganic Chemistry, 2022(10), Article e202200019. https://doi.org/10.1002/ejic.202200019

Substitution of metal addenda was explored as a method to modulate the electronic structure of organofunctionalised hybrid polyoxometalate clusters. Here we study the effects of Mo substitution into a W-based cluster. Through a range of spectroscopic... Read More about A Mixed‐Addenda Mo/W Organofunctionalised Hybrid Polyoxometalate.

Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes (2022)
Journal Article
Pearce, N., Reynolds, K. E. A., Kayal, S., Sun, X. Z., Davies, E. S., Malagreca, F., …Champness, N. R. (2022). Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes. Nature Communications, 13(1), Article 415. https://doi.org/10.1038/s41467-022-28022-3

The ability to control photoinduced charge transfer within molecules represents a major challenge requiring precise control of the relative positioning and orientation of donor and acceptor groups. Here we show that such photoinduced charge transfer... Read More about Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes.

Per-alkoxy-pillar[5]arenes as electron donors: Electrochemical properties of dimethoxy-pillar[5]arene and its corresponding rotaxane (2020)
Journal Article
Pearce, N., Davies, E. S., & Champness, N. R. (2020). Per-alkoxy-pillar[5]arenes as electron donors: Electrochemical properties of dimethoxy-pillar[5]arene and its corresponding rotaxane. Molecules, 25(7), Article 1627. https://doi.org/10.3390/molecules25071627

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 1,4-dimetho... Read More about Per-alkoxy-pillar[5]arenes as electron donors: Electrochemical properties of dimethoxy-pillar[5]arene and its corresponding rotaxane.

Synthesis and characterisation of rylene diimide dimers using molecular handcuffs (2019)
Journal Article
Yang, L., Langer, P., Davies, E. S., Baldoni, M., Wickham, K., Besley, N. A., …Champness, N. R. (2019). Synthesis and characterisation of rylene diimide dimers using molecular handcuffs. Chemical Science, 10(13), 3723-3732. https://doi.org/10.1039/c9sc00167k

A strategy for positioning, and loosely connecting, molecules in close proximity using mechanically interlocked handcuffs is described. The strategy is demonstrated using rylene diimides, creating dimeric structures in which two components are linked... Read More about Synthesis and characterisation of rylene diimide dimers using molecular handcuffs.

Thionated perylene diimide–phenothiazine dyad: synthesis, structure, and electrochemical studies (2018)
Journal Article
Pearce, N., Davies, E. S., Lewis, W., & Champness, N. R. (2018). Thionated perylene diimide–phenothiazine dyad: synthesis, structure, and electrochemical studies. ACS Omega, 3(10), 14236-14244. https://doi.org/10.1021/acsomega.8b02457

Perylene diimides (PDIs) are promising candidates for n-type semiconductor materials and, thus, for use in organic electronics. Thionation of the imide moiety provides an e?cient strategy to control the donor?acceptor gap of these types of compounds... Read More about Thionated perylene diimide–phenothiazine dyad: synthesis, structure, and electrochemical studies.

Selective reduction and homologation of carbon monoxide by organometallic iron complexes (2018)
Journal Article
Sharpe, H. R., Geer, A. M., Taylor, L. J., Gridley, B. M., Blundell, T. J., Blake, A. J., …Kays, D. L. (2018). Selective reduction and homologation of carbon monoxide by organometallic iron complexes. Nature Communications, 9, Article 3757. https://doi.org/10.1038/s41467-018-06242-w

Carbon monoxide is a key C1 feedstock for the industrial production of hydrocarbons, where it is used to make millions of tonnes of chemicals, fuels, and solvents per annum. Many transition metal complexes can coordinate CO2 but the formation of new... Read More about Selective reduction and homologation of carbon monoxide by organometallic iron complexes.

Influence of hydrogen-bonding interactions on nuclearity and structure of palladium tiara-like complexes (2018)
Journal Article
Martin, H. J., Pfeiffer, C. R., Davies, E. S., Davis, A. L., Lewis, W., & Champness, N. R. (2018). Influence of hydrogen-bonding interactions on nuclearity and structure of palladium tiara-like complexes. ACS Omega, 3(8), 8769-8776. https://doi.org/10.1021/acsomega.8b01133

The role of intramolecular hydrogen-bonding interactions upon the nuclearity of palladium tiara-like complexes is reported herein. The synthesis of three palladium tiaras is described with three related thiolate ligands that vary in their hydrogen-bo... Read More about Influence of hydrogen-bonding interactions on nuclearity and structure of palladium tiara-like complexes.

Self-assembly of chiral-at-end diketopyrrolopyrroles: symmetry dependent solution and film optical activity and photovoltaic performanace (2018)
Journal Article
Hume, P. A., Monks, J. P., Pop, F., Davies, E. S., MacKenzie, R. C., & Amabilino, D. B. (2018). Self-assembly of chiral-at-end diketopyrrolopyrroles: symmetry dependent solution and film optical activity and photovoltaic performanace. Chemistry - A European Journal, 24(54), 14461-14469. https://doi.org/10.1002/chem.201802610

Chiral thiophene-diketopyrrolopyrrole derivatives have been synthesised to investigate the potential of stereochemistry and symmetry as a means of modulating properties by influencing self-assembly of these purely organic materials. In particular, de... Read More about Self-assembly of chiral-at-end diketopyrrolopyrroles: symmetry dependent solution and film optical activity and photovoltaic performanace.

Characterisation of redox states of metal-organic frameworks by growth on modified thin-film electrodes (2018)
Journal Article
Mitra, T., Moreau, F., Nevin, A., Perotto, C. U., Summerfield, A., Davies, E. S., …Easun, T. L. (in press). Characterisation of redox states of metal-organic frameworks by growth on modified thin-film electrodes. Chemical Science, https://doi.org/10.1039/C8SC00803E

The application of metal-organic framework (MOF) materials in electrochemical and electrochromic devices remain rare. One of the main reasons for this is the inability to readily access their detailed electrochemistry. The inherent insolubility of th... Read More about Characterisation of redox states of metal-organic frameworks by growth on modified thin-film electrodes.

Heterobimetallic [NiFe] complexes containing mixedCO/CN− ligands: analogs of the active site of the [NiFe]hydrogenases (2018)
Journal Article
Perotto, C. U., Sodipo, C. L., Jones, G. J., Tidey, J. P., Blake, A. J., Lewis, W., …Schröder, M. (in press). Heterobimetallic [NiFe] complexes containing mixedCO/CN− ligands: analogs of the active site of the [NiFe]hydrogenases. Inorganic Chemistry, 57(5), https://doi.org/10.1021/acs.inorgchem.7b02905

The development of synthetic analogs of the active sites of [NiFe] hydrogenases remains challenging and, in spite of the number of complexes featuring a [NiFe] center, those featuring CO and CN− ligands at the Fe center are under-represented. We repo... Read More about Heterobimetallic [NiFe] complexes containing mixedCO/CN− ligands: analogs of the active site of the [NiFe]hydrogenases.

Thionated naphthalene diimides: tuneable chromophores for applications in photoactive dyads (2017)
Journal Article
Pearce, N., Davies, E. S., Horvath, R., Pfeiffer, C. R., Sun, X., Lewis, W., …Champness, N. R. (2018). Thionated naphthalene diimides: tuneable chromophores for applications in photoactive dyads. Physical Chemistry Chemical Physics, 20(2), https://doi.org/10.1039/c7cp06952a

Varying the degree of thionation of a series of naphthalene diimide (NDI) and naphthalic imides (NI) phenothiazine dyad systems afford a systematic approach for tuning of the system’s donor-acceptor energy gap. Each dyad was compared to model NDI/NI... Read More about Thionated naphthalene diimides: tuneable chromophores for applications in photoactive dyads.

Core-substituted naphthalene diimides: influence of substituent conformation on strong visible absorption (2017)
Journal Article
Quinn, S., Davies, E. S., Pfeiffer, C. R., Lewis, W., McMaster, J., & Champness, N. R. (2017). Core-substituted naphthalene diimides: influence of substituent conformation on strong visible absorption. ChemPlusChem, 82(3), 489-492. https://doi.org/10.1002/cplu.201700059

Substitution of the aromatic core of naphthalene diimide (NDI) chromophores by morpholine leads to molecules with strong absorbance in the visible spectrum. The shift of absorption maxima to lower energy is determined not only by the degree of substi... Read More about Core-substituted naphthalene diimides: influence of substituent conformation on strong visible absorption.

Thionated perylene diimides with intense absorbance in the near-IR (2015)
Journal Article
Llewellyn, B. A., Davies, S. E., Pfeiffer, C. R., Cooper, M., Lewis, W., & Champness, N. R. (2015). Thionated perylene diimides with intense absorbance in the near-IR. Chemical Communications, https://doi.org/10.1039/C5CC09962E

A synthetic strategy involving a combination of tetra-thionation and amine substitution in the bay region of a perylene diimide (PDI) leads to remarkable examples of neutral PDIs with intense absorption maxima in the near infrared. Generation of the... Read More about Thionated perylene diimides with intense absorbance in the near-IR.

Photochemical Dihydrogen Production Using an Analogue of the Active Site of [NiFe] Hydrogenase (2014)
Journal Article
Summers, P. A., Dawson, J., Ghiotto, F., Hanson-Heine, M. W., Vuong, K. . Q., Davies, E. S., …Schröder, M. (2014). Photochemical Dihydrogen Production Using an Analogue of the Active Site of [NiFe] Hydrogenase. Inorganic Chemistry, 53(9), 4430-4439. https://doi.org/10.1021/ic500089b

The photoproduction of dihydrogen (H2) by a low molecular weight analogue of the active site of [NiFe] hydrogenase has been investigated by the reduction of the [NiFe2] cluster, 1, by a photosensitier PS (PS = [ReCl(CO)3(bpy)] or [Ru(bpy)3][PF6]2). R... Read More about Photochemical Dihydrogen Production Using an Analogue of the Active Site of [NiFe] Hydrogenase.

Bis-thioether-substituted perylene diimides: Structural, electrochemical, and spectroelectrochemical properties (2013)
Journal Article
Slater, A. G., Davies, E. S., Argent, S. P., Lewis, W., Blake, A. J., McMaster, J., & Champness, N. R. (2013). Bis-thioether-substituted perylene diimides: Structural, electrochemical, and spectroelectrochemical properties. Journal of Organic Chemistry, 78(7), 2853-2862. https://doi.org/10.1021/jo400026r

The synthesis and separation of the 1,6- and 1,7- isomers of N,N′-bis(alkyl)diadamantylthio-3,4,9,10-perylenetetracarboxylic acid diimide are reported. Investigations of the structural, electrochemical, spectroscopic, and spectroelectrochemical prope... Read More about Bis-thioether-substituted perylene diimides: Structural, electrochemical, and spectroelectrochemical properties.

Bis-morpholine-substituted perylene bisimides: Impact of isomeric arrangement on electrochemical and spectroelectrochemical properties (2008)
Journal Article
Goretzki, G., Davies, E. S., Argent, S. P., Alsindi, W. Z., Blake, A. J., Warren, J. E., …Champness, N. R. (2008). Bis-morpholine-substituted perylene bisimides: Impact of isomeric arrangement on electrochemical and spectroelectrochemical properties. Journal of Organic Chemistry, 73(22), 8808-8814. https://doi.org/10.1021/jo801557e

(Graph Presented) The synthesis and separation of the 1,6- and 1,7- isomers of N,N′-bis(n-butyl)dimorpholino-3,4:9,10-perylenetetracarboxylic acid bisimide are reported. Investigations of the electrochemical and spectroscopic, in particular, spectroe... Read More about Bis-morpholine-substituted perylene bisimides: Impact of isomeric arrangement on electrochemical and spectroelectrochemical properties.