ORCID Profile
0000-0003-0935-3331
Current Organisation
University of Oxford
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Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CP03029B
Abstract: Using covariance analysis methods, we study the fragmentation dynamics of multiply ionized 1- and 2-iodopropane. Signatures of isomer-specific nuclear motion occurring during sequential fragmentation pathways are identified.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2FD90048C
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2FD90049A
Publisher: American Chemical Society (ACS)
Date: 16-08-2018
Abstract: Evidence and understanding of sulfur-centered hydrogen bonding, especially where the donor is a thiol, lags far behind that for conventional OH interactions. To help address this deficiency, conformer specific IR spectra of 2-phenylethanethiol (PET) and associated 1:1 solvent complexes have been measured in SH, OH, and CH stretch regions using resonant-two-photon-ionization (R2PI) and IR-UV ion dip spectroscopic techniques. The aromatic and aliphatic CH stretch regions show signature differences between anti and gauche conformers. Supported by ab initio calculations, a PET-water cluster with an OH···S arrangement and a PET-diethyl ether cluster expressing an SH···O interaction were identified. The SH stretch band of the SH···O complex is red-shifted and undergoes significant intensity enhancement compared to the bare molecule, which is characteristic of hydrogen bonding. These findings offer insight into the nature of the thiol functional group as a potential hydrogen bond donor and acceptor.
Publisher: American Chemical Society (ACS)
Date: 04-06-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2FD00033D
Abstract: Electron ionisation is a fundamental ionisation process that often leads to unimolecular dissociation. Velocity-map and covariance-map imaging experiments provide detailed insight into the often complex dissociation dynamics.
Publisher: American Chemical Society (ACS)
Date: 23-08-2019
Abstract: Using a combination of velocity-map imaging and resonance-enhanced multiphoton ionization detection with crossed molecular beam scattering, the dynamics of rotational energy transfer have been examined for NO in collisions with CH
Publisher: Wiley
Date: 2005
DOI: 10.1002/BIO.865
Abstract: The forensic luminol test has long been valued for its ability to detect trace amounts of blood that are invisible to the naked eye. This is the first quantitative study to determine the effect on the luminol test when an attempt is made to clean bloodstained tiles with a known interfering catalyst (bleach). Tiles covered with either wet or dry blood were tested, and either water or sodium hypochlorite solution (bleach) was used to clean the tiles. As expected, the chemiluminescence intensity produced when luminol was applied generally decreased with the number of times that a tile was cleaned with water, until the chemiluminescence was neither visible nor detectable. However, when the tiles were cleaned with bleach there was an initial drop in chemiluminescence intensity, followed by a rise to a consistently high value, visibly indistinguishable from that of blood. Examination of bleach drying time suggested that any interfering effect becomes negligible after 8 h.
Publisher: Wiley
Date: 07-2003
DOI: 10.1002/BIO.723
Abstract: This paper presents the fi rst comprehensive and quantitative study of substances that interfere with the forensic luminol test for blood. Two hundred and fifty substances have been selected on the basis of modern lifestyles and of contiguity with crime scenes. The intensity of the chemiluminescence produced by each substance has been measured relative to that of haemoglobin and the peak wavelength shift has also been determined. The following is a short list of nine substances that produce chemiluminescence intensities comparable with that of haemoglobin: turnips, parsnips, horseradishes, commercial bleach (NaClO), copper metal, some furniture polishes, some enamel paints, and some interior fabrics in motor vehicles. Care needs to be taken when the luminol test for blood is used in the presence of these substances.
Publisher: American Chemical Society (ACS)
Date: 04-10-2022
Publisher: Elsevier BV
Date: 09-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7CP07365H
Abstract: The hydrogen bond acceptor strength of a series of halocarbons is studied by electronic and vibrational spectroscopy.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CP02662G
Abstract: Photolysis of N , N -dimethylformamide offers a model for cleavage of the peptide bond in proteins. Excitation from a range of molecular geometries at 225 and 245 nm primarily populates the S 2 state, resulting in cleavage of the amide or N–CH 3 bond.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2FD90050E
Publisher: American Chemical Society (ACS)
Date: 23-10-2019
Abstract: A gas-phase electronic spectrum of nicotine in a supersonic expansion has been recorded using two-color resonant two-photon ionization spectroscopy. Efficient photoionization was achievable only via the pyridine chromophore owing to poor Franck-Condon overlap in the
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2FD90051C
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CP01974H
Abstract: Tetrahydrofuran (THF) can be considered the simplest analog of the deoxyribose backbone component of deoxyribonucleic acid. As such, it provides a useful model for probing the photochemistry of such biomolecular...
Publisher: American Chemical Society (ACS)
Date: 13-03-2019
Abstract: Quasi-classical trajectory simulations examine the reaction of Cl with propene across a range of collision energies, from 7 to 28 kJ mol
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Patrick Robertson.