Professor Robert Pal's Outputs (7)

Unlocking same‐sign CPL: solvent effects on spectral form and racemisation kinetics in nine‐coordinate chiral europium(III) complexes (2023)
Journal Article
De Rosa, D. F., Starck, M., Parker, D., & Pal, R. (2024). Unlocking same‐sign CPL: solvent effects on spectral form and racemisation kinetics in nine‐coordinate chiral europium(III) complexes. Chemistry - A European Journal, 30(9), Article e202303227. https://doi.org/10.1002/chem.202303227

Understanding the factors that shape the circularly polarised luminescence (CPL) emission profiles of europium(III)-based CPL emitters to have specific sign properties, e. g. monosignate individual CPL transitions, is key to design novel complexes fo... Read More about Unlocking same‐sign CPL: solvent effects on spectral form and racemisation kinetics in nine‐coordinate chiral europium(III) complexes.

Distinguishing Molecular Mechanical Action from Photothermal and Photodynamic Behavior (2023)
Journal Article
Beckham, J. L., Bradford, T. S., Ayala-Orozco, C., Santos, A. L., Arnold, D., van Venrooy, A. R., García-López, V., Pal, R., & Tour, J. M. (2024). Distinguishing Molecular Mechanical Action from Photothermal and Photodynamic Behavior. Advanced Materials, 36(7), Article 2306669. https://doi.org/10.1002/adma.202306669

Molecular motors (MM) are molecular machines, or nanomachines, that rotate unidirectionally upon photostimulation and perform mechanical work on their environment. In the last several years, it has been shown that the photomechanical action of MM can... Read More about Distinguishing Molecular Mechanical Action from Photothermal and Photodynamic Behavior.

Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes (2023)
Journal Article
Willis, O. G., Petri, F., De Rosa, D. F., Mandoli, A., Pal, R., Zinna, F., & Di Bari, L. (2023). Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes. Journal of the American Chemical Society, 145(46), 25170-25176. https://doi.org/10.1021/jacs.3c05957

We report the synthesis of chiral lanthanide complexes with extended π conjugation for efficient circularly polarized luminescence (CPL) via two-photon excitation (2PE). The pyridine bis-oxazoline (PyBox) core provides the chiral Ln3+ environment, wh... Read More about Two-Photon Circularly Polarized Luminescence of Chiral Eu Complexes.

1‐Azathioxanthone Appended Lanthanide(III) DO3A Complexes That Luminesce Following Excitation at 405 nm** (2023)
Journal Article
Gundorff Nielsen, L., Ravnsborg Hansen, A. K., Stachelek, P., Pal, R., & Just Sørensen, T. (2023). 1‐Azathioxanthone Appended Lanthanide(III) DO3A Complexes That Luminesce Following Excitation at 405 nm**. European Journal of Inorganic Chemistry, 26(24), Article e202300245. https://doi.org/10.1002/ejic.202300245

Since the pioneering report by Selvin, we have been fascinated by the potential of using lanthanide luminescence in bioimaging. The uniquely narrow emission lines and long luminescence lifetimes both provide the potential for background free images t... Read More about 1‐Azathioxanthone Appended Lanthanide(III) DO3A Complexes That Luminesce Following Excitation at 405 nm**.

Influence of polyvinylpyrrolidone (PVP) in the synthesis of luminescent NaYF4:Yb,Er upconversion nanoparticles (2023)
Journal Article
Birch, R., Bruckbauer, J., Gajewska, M., Cios, G., Pal, R., & MacKenzie, L. E. (2023). Influence of polyvinylpyrrolidone (PVP) in the synthesis of luminescent NaYF4:Yb,Er upconversion nanoparticles. Methods and Applications in Fluorescence, 11(3), Article 034001. https://doi.org/10.1088/2050-6120/acd837

Polyvinylpyrrolidone (PVP) can be used to produce upconversion nanoparticles (UCNPs) in an advantageous manner, i.e. at modest temperatures in open-to-air conditions with simple hotplate and flask apparatus. However, the influence of PVP parameters o... Read More about Influence of polyvinylpyrrolidone (PVP) in the synthesis of luminescent NaYF4:Yb,Er upconversion nanoparticles.

Hierarchical self-assembly in an RNA-based coordination polymer hydrogel (2023)
Journal Article
El-Zubir, O., Rojas Martinez, P., Dura, G., Doherty, C., Cucinotta, F., Mackenzie, L. E., Pal, R., Horrocks, B. R., & Houlton, A. (2023). Hierarchical self-assembly in an RNA-based coordination polymer hydrogel. Dalton Transactions, 52(17), 5545-5551. https://doi.org/10.1039/d3dt00634d

An RNA-based coordination polymer is formed by the aqueous reaction of CuI ions with the thionucleoside enantiomer (−)6-thioguanosine, (6tGH). The resulting polymer, [CuI(μ3-S-thioG)]n1, has a one-dimensional structure based on a [Cu4–S4] core and un... Read More about Hierarchical self-assembly in an RNA-based coordination polymer hydrogel.

Rapid handheld time-resolved circularly polarised luminescence photography camera for life and material sciences (2023)
Journal Article
De Rosa, D. F., Brook, P., Black, D. J., & Pal, R. (2023). Rapid handheld time-resolved circularly polarised luminescence photography camera for life and material sciences. Nature Communications, 14, Article 1537. https://doi.org/10.1038/s41467-023-37329-8

Circularly polarised luminescence (CPL) is gaining a rapidly increasing following and finding new applications in both life and material sciences. Spurred by recent instrumental advancements, the development of CPL active chiral emitters is going thr... Read More about Rapid handheld time-resolved circularly polarised luminescence photography camera for life and material sciences.