T. Gustavsson
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View article: Cover Feature: The Excited State Dynamics of a Mutagenic Guanosine Etheno Adduct Investigated by Femtosecond Fluorescence Spectroscopy and Quantum Mechanical Calculations (Chem. Eur. J. 49/2024)
Cover Feature: The Excited State Dynamics of a Mutagenic Guanosine Etheno Adduct Investigated by Femtosecond Fluorescence Spectroscopy and Quantum Mechanical Calculations (Chem. Eur. J. 49/2024) Open
This article relates to: The Excited State Dynamics of a Mutagenic Guanosine Etheno Adduct Investigated by Femtosecond Fluorescence Spectroscopy and Quantum Mechanical Calculations
\nPaloma Lizondo-Aranda, Thomas Gustavsson, Lara Martínez-…
View article: The Excited State Dynamics of a Mutagenic Guanosine Etheno Adduct Investigated by Femtosecond Fluorescence Spectroscopy and Quantum Mechanical Calculations
The Excited State Dynamics of a Mutagenic Guanosine Etheno Adduct Investigated by Femtosecond Fluorescence Spectroscopy and Quantum Mechanical Calculations Open
Femtosecond fluorescence upconversion experiments were combined with CASPT2 and time dependent DFT calculations to characterize the excited state dynamics of the mutagenic etheno adduct 1, N 2 ‐etheno‐2’‐deoxyguanosine (ϵdG). This endogeno…
View article: Towards robust PICOSEC Micromegas precise timing detectors
Towards robust PICOSEC Micromegas precise timing detectors Open
The PICOSEC Micromegas (MM) detector is a precise timing gaseous detector consisting of a Cherenkov radiator combined with a photocathode and a MM amplifying structure. A 100-channel PICOSEC MM prototype with 10 × 10 cm 2 active area equip…
View article: A large area 100-channel PICOSEC Micromegas detector with time resolution at the 20 ps level
A large area 100-channel PICOSEC Micromegas detector with time resolution at the 20 ps level Open
The PICOSEC Micromegas precise timing detector is based on a Cherenkov radiator coupled to a photocathode operating in a semi-transparent mode and a Micromegas amplification structure. The first proof of concept single-channel prototype wa…
View article: A large area 100 channel Picosec Micromegas detector with sub 20 ps time\n resolution
A large area 100 channel Picosec Micromegas detector with sub 20 ps time\n resolution Open
The PICOSEC Micromegas precise timing detector is based on a Cherenkov\nradiator coupled to a semi-transparent photocathode and a Micromegas\namplification structure. The first proof of concept single-channel small area\nprototype was able…
View article: The Ubiquity of High-Energy Nanosecond Fluorescence in DNA Duplexes
The Ubiquity of High-Energy Nanosecond Fluorescence in DNA Duplexes Open
During the past few years, several studies reported that a significant part of the intrinsic fluorescence of DNA duplexes decays with surprisingly long lifetimes (1-3 ns) at wavelengths shorter than the ππ* emission of their monomeric cons…
View article: Fluorescence of Bimolecular Guanine Quadruplexes: From Femtoseconds to Nanoseconds
Fluorescence of Bimolecular Guanine Quadruplexes: From Femtoseconds to Nanoseconds Open
The paper deals with the fluorescence of guanine quadruplexes (G4) formed by association of two DNA strands d(GGGGTTTTGGGG) in the presence of K+ cations, noted as OXY/K+ in reference to the protozoon Oxytricha nova, whose telomere contain…
View article: Precise timing and recent advancements with segmented anode PICOSEC Micromegas prototypes
Precise timing and recent advancements with segmented anode PICOSEC Micromegas prototypes Open
Timing information in current and future accelerator facilities is important for resolving objects (particle tracks, showers, etc.) in extreme large particles multiplicities on the detection systems. The PICOSEC Micromegas detector has dem…
View article: High-Energy Long-Lived Emitting Mixed Excitons in Homopolymeric Adenine-Thymine DNA Duplexes
High-Energy Long-Lived Emitting Mixed Excitons in Homopolymeric Adenine-Thymine DNA Duplexes Open
The publication deals with polymeric pA●pT and oligomeric A20●T20 DNA duplexes whose fluorescence is studied by time-correlated single photon counting. It is shown that their emission on the nanosecond timescale is largely dominated by hig…
View article: Snowmass 2021 White Paper Instrumentation Frontier 05 -- White Paper 1: MPGDs: Recent advances and current R&D
Snowmass 2021 White Paper Instrumentation Frontier 05 -- White Paper 1: MPGDs: Recent advances and current R&D Open
This paper will review the origins, development, and examples of new versions of Micro-Pattern Gas Detectors. The goal for MPGD development was the creation of detectors that could cost-effectively cover large areas while offering excellen…
View article: Exciton Cooling in 2D Perovskite Nanoplatelets: Rationalized Carrier-Induced Stark and Phonon Bottleneck Effects
Exciton Cooling in 2D Perovskite Nanoplatelets: Rationalized Carrier-Induced Stark and Phonon Bottleneck Effects Open
Using femtosecond transient absorption (fs-TA), we investigate the hot exciton relaxation dynamics in strongly confined lead iodide perovskite nanoplatelets (NPLs). The large quantum and dielectric confinement leads to discrete excitonic t…
View article: The Excited State Dynamics of a Mutagenic Cytidine Etheno Adduct Investigated by Combining Time-Resolved Spectroscopy and Quantum Mechanical Calculations
The Excited State Dynamics of a Mutagenic Cytidine Etheno Adduct Investigated by Combining Time-Resolved Spectroscopy and Quantum Mechanical Calculations Open
Joint femtosecond fluorescence upconversion experiments and theoretical calculations provide a hitherto unattained degree of characterization and understanding of the mutagenic etheno adduct 3,N4-etheno-2'-deoxycytidine (εdC) excited state…
View article: The properties of hot household hygroscopic materials and their potential use for non-medical facemask decontamination
The properties of hot household hygroscopic materials and their potential use for non-medical facemask decontamination Open
The widespread use of facemasks throughout the population is recommended by the WHO to reduce transmission of the SARS-CoV-2 virus. As some regions of the world are facing mask shortages, reuse may be necessary. However, used masks are con…
View article: Fundamentals of the Intrinsic DNA Fluorescence
Fundamentals of the Intrinsic DNA Fluorescence Open
The intrinsic fluorescence of nucleic acids is extremely weak compared to that of the fluorescent labels used to probe their structural and functional behavior. Thus, for technical reasons, the investigation of the intrinsic DNA fluorescen…
View article: Auger Recombination and Multiple Exciton Generation in Colloidal Two-Dimensional Perovskite Nanoplatelets: Implications for Light-Emitting Devices
Auger Recombination and Multiple Exciton Generation in Colloidal Two-Dimensional Perovskite Nanoplatelets: Implications for Light-Emitting Devices Open
International audience
View article: Introduction to Femtochemistry: Excited-State Proton Transfer from Pyranine to Water Studied by Femtosecond Transient Absorption
Introduction to Femtochemistry: Excited-State Proton Transfer from Pyranine to Water Studied by Femtosecond Transient Absorption Open
International audience
View article: Charge Carrier Relaxation in Colloidal FAPbI3 Nanostructures Using Global Analysis
Charge Carrier Relaxation in Colloidal FAPbI3 Nanostructures Using Global Analysis Open
We study the hot charge carrier relaxation process in weakly confined hybrid lead iodide perovskite colloidal nanostructures, FAPbI3 (FA = formaminidium), using femtosecond transient absorption (TA). We compare the conventional analysis me…
View article: Recent Developments on Precise Timing with the PICOSEC Micromegas Detector
Recent Developments on Precise Timing with the PICOSEC Micromegas Detector Open
The PICOSEC-Micromegas detector was developed for precise timing of the arrival of charged particles with a resolution bellow 30 ps. This contribution, after a brief introduction presents results concerning the PICOSEC-Micromegas response …
View article: Excited State Dynamics of 8-Vinyldeoxyguanosine in Aqueous Solution Studied by Time-Resolved Fluorescence Spectroscopy and Quantum Mechanical Calculations
Excited State Dynamics of 8-Vinyldeoxyguanosine in Aqueous Solution Studied by Time-Resolved Fluorescence Spectroscopy and Quantum Mechanical Calculations Open
The fluorescent base guanine analog, 8-vinyl-deoxyguanosine (8vdG), is studied in solution using a combination of optical spectroscopies, notably femtosecond fluorescence upconversion and quantum chemical calculations, based on time-depend…
View article: Excited State Lifetimes of Sulfur-Substituted DNA and RNA Monomers Probed Using the Femtosecond Fluorescence Up-Conversion Technique
Excited State Lifetimes of Sulfur-Substituted DNA and RNA Monomers Probed Using the Femtosecond Fluorescence Up-Conversion Technique Open
Sulfur-substituted DNA and RNA nucleobase derivatives (a.k.a., thiobases) are an important family of biomolecules. They are used as prodrugs and as chemotherapeutic agents in medical settings, and as photocrosslinker molecules in structura…
View article: Precise timing with the PICOSEC-Micromegas detector
Precise timing with the PICOSEC-Micromegas detector Open
This work presents the concept of the PICOSEC-Micromegas de-tector to achieve a time resolution below 30 ps. PICOSEC consists of a two-stageMicromegas detector coupled to a Cherenkov radiator and equipped with a photo-cathode. The results …
View article: PICOSEC-Micromegas: Robustness measurements and study of different photocathode materials
PICOSEC-Micromegas: Robustness measurements and study of different photocathode materials Open
Detectors with a time resolution of 20-30 ps and a reliable performance in high particles flux environments are necessary for an accurate vertex separation in future HEP experiments. The PICOSEC-Micromegas detector concept is a Micro-Patte…
View article: Modeling the Timing Characteristics of the PICOSEC Micromegas Detector
Modeling the Timing Characteristics of the PICOSEC Micromegas Detector Open
The PICOSEC Micromegas detector can time the arrival of Minimum Ionizing Particles with a sub-25 ps precision. A very good timing resolution in detecting single photons is also demonstrated in laser beams. The PICOSEC timing resolution is …
View article: Multiscale time-resolved fluorescence study of a glycogen phosphorylase inhibitor combined with quantum chemistry calculations
Multiscale time-resolved fluorescence study of a glycogen phosphorylase inhibitor combined with quantum chemistry calculations Open
A study of the first fluorescent potent inhibitor of glycogen phosphorylase showcases how emission is controlled by two independent rotations of two aromatic moieties.