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Journal articleFang F, Li A, Geoghegan B, et al., 2026,
Electron hopping in conjugated molecular wires with application to solar cells
, Nature Chemistry, ISSN: 1755-4330Electron transfer through molecular wires underpins numerous research fields, ranging from single molecule electronics to fundamental biological processes and their application in (bio)electrocatalysis. Here, we report a series of 1–3 nm long ferrocene terminated conjugated molecular wires, anchored to indium tin oxide electrodes, that exhibit an electron transfer mechanism dominated by hopping (with a β value of 0.043 Å⁻¹). We show that the nature of the electrode, namely the small energy gap between the electron donor and acceptor, explains the unexpected electron transfer mechanism in these short wires. We demonstrate the applicability of these anchored molecular wires in a tin perovskite solar cell as hole-extraction layer. We show improved performance in devices employing the molecular wire as compared to more conventional hole-extraction layers typically used in tin perovskite solar cells. This work not only opens avenues for mechanistic investigations of interfacial electron transfer using molecular wires, but also showcases their potential impact in applications e.g. in a solar cell.
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Journal articleSiakalli C, Osborne BE, Brown RK, et al., 2026,
Hydroxyquinoline-functionalised aza-crown macrocycles for lanthanide coordination.
, Dalton TransEmerging therapeutic radiolanthanides have utility for systemic molecular radiotherapy in nuclear medicine, provided that suitable chemical technology is available to incorporate them into receptor-targeted radiopharmaceuticals. In this work, N,N'-bis(8-hydroxyquinoline-2-ylmethyl)-4,13-diaza-18-crown-6 (H2KHQ) was synthesised, and its binding ability, thermodynamic stability and selectivity for Ln3+ ions (Ln3+ = La, Tb, and Lu) investigated. The design of H2KHQ involves pendant arms featuring 8-hydroxyquinoline units, known to possess metal-chelating properties and desirable activity in other therapeutic molecules. H2KHQ exhibited selectivity for the larger Ln3+ ions, confirmed by experimentally measured stability constants as well as DFT calculations. H2KHQ was able to bind the larger, non-radioactive La3+ and Tb3+ ions within 30 minutes at room temperature, forming a single, 2-fold symmetric species in solution. The structure of [La-HKHQ]2+, as determined by single crystal XRD, emphasized the need for high denticity chelators to satisfy the coordination sphere of the Ln3+, showing a 10-coordinate La3+ metal centre. H2KHQ was radiolabelled with [161Tb]TbCl3 under mild conditions in 92% radiochemical yield in promising proof-of-concept measurements.
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Journal articleZhu Y, Cheng Z, Zhang J, et al., 2026,
Influences of Ring Sizes and Chiral Substituents on Macrocyclic Chelators for Improving 68Ga Radiolabeling.
, JACS Au, Vol: 6, Pages: 113-12368Ga-labeled macrocyclic ligands have been extensively studied and used for positron emission tomography (PET) imaging. Compared with 12-membered DOTA derivatives, NOTA-based chelators with 9-membered macrocyclic rings exhibit more advantageous coordination stability for Ga3+ ions. However, studies of the 10-membered DETA macrocycle are still quite limited. Here, we present the synthesis of four different-sized chiral macrocyclic ligands L1-L4, followed by radiolabeling and stability studies to reveal the influence of ring size and chiral substituents on Ga3+ chelation. In the 68Ga radiolabeling experiments, chiral NOTA L1 exhibits the highest radiochemical yield of 99% at 25 °C. While for the chiral DETA L2/L3 and the chiral DOTA L4, their radiolabeling efficiencies are inferior at room temperature, but remarkable improvements were observed at higher temperatures. L1-L4 all exhibit superior Ga3+ coordination stability than their achiral counterparts, while the chiral DETA L2 with an α-methyl group shows a slightly better performance than its β-analogue L3. Serum stability tests and kinetic studies under acid and alkaline conditions were conducted, highlighting the favorable kinetic inertness of these chiral ligands for potential 68Ga-labeled PET imaging applications.
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Journal articleWebb T, Vanin F, Gao D, et al., 2025,
Metallocenium salts as tunable dopants for enhanced efficiency of perovskite solar cells
, ENERGY & ENVIRONMENTAL SCIENCE, ISSN: 1754-5692 -
Journal articleLi B, Gao D, Vanin F, et al., 2025,
Nanoscale soft interaction-engineered perovskite heterojunctions for highly efficient and reproducible solar cells
, NATURE COMMUNICATIONS, Vol: 16 -
Journal articleAlajmi A, Alanazi B, Alresheedi K, et al., 2025,
Light-driven molecular switching achieves 6-order magnitude conductance change in OPE dimers
, NANOSCALE ADVANCES, ISSN: 2516-0230 -
Journal articleChen H, Lim Kee Chang W, Mcmullon GT, et al., 2025,
Tetrazine-<i>trans</i>-cyclooctene ligated lanthanide conjugates for biomedical imaging
, INORGANIC CHEMISTRY FRONTIERS, ISSN: 2052-1553 -
Journal articlePatel N, Pham TT, Banu A, et al., 2025,
Mass spectrometric imaging and quantitative analysis of the <i>in vivo</i> biodistribution of trastuzumab using a rhodium(<sc>iii</sc>) sarcophagine complex
, INORGANIC CHEMISTRY FRONTIERS, Vol: 12, ISSN: 2052-1553 -
Conference paperBoyle J, Chiappo D, Cooper S, et al., 2025,
Aminocoumarin-based heme oxygenase activity fluorescence probe reveals novel aspects of HO-1 regulation
, 93rd Congress of the European-Atherosclerosis-Society (EAS), Publisher: ELSEVIER IRELAND LTD, ISSN: 0021-9150 -
Journal articleWalter ERH, Lee LC-C, Leung PK-K, et al., 2025,
Bioorthogonal activation and mitochondrial targeting of a near-infrared-emitting iridium(<sc>iii</sc>) nitrone complex <i>via</i> cyclooctynylated phosphonium cations for enhanced cellular imaging and photodynamic therapy
, INORGANIC CHEMISTRY FRONTIERS, ISSN: 2052-1553- Cite
- Citations: 1
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Journal articleMann P, Bourke S, Urbano L, et al., 2025,
The synthesis and optical properties of Cu-In-S/ZnS nanocrystals in buffer solution for near-infrared fluorescence imaging
, JOURNAL OF MATERIALS CHEMISTRY B, Vol: 13, Pages: 5871-5879, ISSN: 2050-750X -
Journal articleYeung Y-H, Lam P-L, Thor W, et al., 2025,
An Efficient Solid-Phase Synthetic Approach to Prepare TACN-Functionalized Peptides
, CHEMISTRY-METHODS, Vol: 5, ISSN: 2628-9725- Cite
- Citations: 1
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Journal articleVanin F, Tremlett WDJ, Gao D, et al., 2025,
Modulating Perovskite Surface Energetics Through Tuneable Ferrocene Interlayers for High-Performance Perovskite Solar Cells
, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 64- Cite
- Citations: 4
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Journal articleKoh J, Baker CA, Diamantakis MN, et al., 2025,
A pinch of silver salt to enable <i>rac</i>-lactide ring-opening polymerisation at room temperature using Ti-salen complexes
, POLYMER CHEMISTRY, Vol: 16, Pages: 1503-1508, ISSN: 1759-9954- Cite
- Citations: 1
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Journal articleHong E, Tremlett WDJ, Hart L, et al., 2025,
Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability
, ADVANCED FUNCTIONAL MATERIALS, ISSN: 1616-301X
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Contact
Professor Nick Long
Email: n.long@imperial.ac.uk
Telephone: +44 (0)20 7594 5781
Location
501J
Molecular Sciences Research Hub
White City Campus