Search Results - "Lloyd, Lawson T."
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Photosynthesis tunes quantum-mechanical mixing of electronic and vibrational states to steer exciton energy transfer
Published in Proceedings of the National Academy of Sciences - PNAS (16-03-2021)“…Photosynthetic species evolved to protect their light-harvesting apparatus from photoxidative damage driven by intracellular redox conditions or environmental…”
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2
Optically accessible long-lived electronic biexcitons at room temperature in strongly coupled H- aggregates
Published in Nature communications (27-09-2024)“…Photon absorption is the first process in light harvesting. Upon absorption, the photon redistributes electrons in the materials to create a Coulombically…”
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3
Evidence for the Dominance of Carrier-Induced Band Gap Renormalization over Biexciton Formation in Cryogenic Ultrafast Experiments on MoS2 Monolayers
Published in The journal of physical chemistry letters (02-04-2020)“…Transition-metal dichalcogenides (TMDs) such as MoS2 display promising electrical and optical properties in the monolayer limit. Due to strong quantum…”
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4
Accumulation of Mitochondrial RPPH1 RNA Is Associated with Cellular Senescence
Published in International journal of molecular sciences (14-01-2021)“…Post-transcriptional gene regulation is an important step in the regulation of eukaryotic gene expression. Subcellular compartmentalization of RNA species…”
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5
Resonant Vibrational Enhancement of Downhill Energy Transfer in the C -Phycocyanin Chromophore Dimer
Published in The journal of physical chemistry letters (11-11-2024)“…Energy transfer between electronically coupled photosynthetic light-harvesting antenna pigments is frequently assisted by protein and chromophore nuclear…”
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Sub-10 fs Intervalley Exciton Coupling in Monolayer MoS2 Revealed by Helicity-Resolved Two-Dimensional Electronic Spectroscopy
Published in ACS nano (22-06-2021)“…The valley pseudospin at the K and K′ high-symmetry points in monolayer transition metal dichalcogenides (TMDs) has potential as an optically addressable…”
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Phycobilisome’s Exciton Transfer Efficiency Relies on an Energetic Funnel Driven by Chromophore–Linker Protein Interactions
Published in Journal of the American Chemical Society (31-05-2023)“…The phycobilisome is the primary light-harvesting antenna in cyanobacterial and red algal oxygenic photosynthesis. It maintains near-unity efficiency of energy…”
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8
Ultrafast Excitation Transfer in Cy5 DNA Photonic Wires Displays Dye Conjugation and Excitation Energy Dependency
Published in The journal of physical chemistry letters (21-05-2020)“…DNA scaffolds enable base-pair-specific positioning of fluorescent molecules, allowing for nanometer-scale precision in controlling multidye interactions…”
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9
Annihilation of Excess Excitations along Phycocyanin Rods Precedes Downhill Flow to Allophycocyanin Cores in the Phycobilisome of Synechococcus elongatus PCC 7942
Published in The journal of physical chemistry. B (13-01-2022)“…Cyanobacterial phycobilisome complexes absorb visible sunlight and funnel photogenerated excitons to the photosystems where charge separation occurs. In the…”
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10
Leveraging Dynamical Symmetries in Two-Dimensional Electronic Spectra to Extract Population Transfer Pathways
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (09-06-2022)“…We present a method to deterministically isolate population transfer kinetics from two-dimensional electronic spectroscopic signals. Central to this analysis…”
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11
AUF1 facilitates microRNA-mediated gene silencing
Published in Nucleic acids research (02-06-2017)“…Eukaryotic mRNA decay is tightly modulated by RNA-binding proteins (RBPs) and microRNAs (miRNAs). RBP AU-binding factor 1 (AUF1) has four isoforms resulting…”
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12
Redox conditions correlated with vibronic coupling modulate quantum beats in photosynthetic pigment–protein complexes
Published in Proceedings of the National Academy of Sciences - PNAS (07-12-2021)“…Quantum coherences, observed as time-dependent beats in ultrafast spectroscopic experiments, arise when light–matter interactions prepare systems in…”
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13
Leveraging scatter in two-dimensional spectroscopy: passive phase drift correction enables a global phasing protocol
Published in Optics express (26-10-2020)“…Phase stability between pulse pairs defining Fourier-transform time delays can limit resolution and complicates development and adoption of multidimensional…”
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14
Time-Domain Line-Shape Analysis from 2D Spectroscopy to Precisely Determine Hamiltonian Parameters for a Photosynthetic Complex
Published in The journal of physical chemistry. B (25-03-2021)“…Optical signals come from coherences between quantum states, with spectral line widths determined by the coherences’ dephasing dynamics. Using a 2D electronic…”
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15
eIF4E phosphorylation by MST1 reduces translation of a subset of mRNAs, but increases lncRNA translation
Published in Biochimica et biophysica acta. Gene regulatory mechanisms (01-07-2017)“…Post-transcriptional gene regulation is an important step in eukaryotic gene expression. The last step to govern production of nascent peptides is during the…”
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16
Evidence for the Dominance of Carrier-Induced Band Gap Renormalization over Biexciton Formation in Cryogenic Ultrafast Experiments on MoS 2 Monolayers
Published in The journal of physical chemistry letters (02-04-2020)“…Transition-metal dichalcogenides (TMDs) such as MoS display promising electrical and optical properties in the monolayer limit. Due to strong quantum…”
Get full text
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17
Poly(3‐hexylthiophene) films prepared using binary solvent mixtures
Published in Journal of polymer science. Part B, Polymer physics (15-03-2016)“…Binary solvent mixtures were routinely used to induce the hierarchical assembly of poly(3‐hexylthiophene) (P3HT) in the liquid phase. This technique has…”
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18
Competition between Hydrophilic and Argyrophilic Interactions in Surface Enhanced Raman Spectroscopy
Published in Chemphyschem (19-09-2016)“…The competition for binding and charge‐transfer (CT) from the nitrogen containing heterocycle pyrimidine to either silver or to water in surface enhanced Raman…”
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Inside Cover: Competition between Hydrophilic and Argyrophilic Interactions in Surface Enhanced Raman Spectroscopy (ChemPhysChem 18/2016)
Published in Chemphyschem (19-09-2016)“…The Inside Cover picture displays the competition for binding of either water molecules or silver to nitrogen‐containing heterocyclic molecules in SERS,…”
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20
Sub-10 fs Intervalley Exciton Coupling in Monolayer MoS 2 Revealed by Helicity-Resolved Two-Dimensional Electronic Spectroscopy
Published in ACS nano (22-06-2021)Get full text
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