Laser Spectroscopy of Functional Molecules

Electronic spectrum of the protonated diacetylene cation (H2C4H )

Katherine J Catani, Giel Muller, Pavol Jusko, Patrice Theule, Evan J Bieske, Christophe Jouvet

2017-08-28

The B̃1A1←X̃1A1 electronic band system of the protonated diacetylene cation (H2C4H+) is measured over the 230-295 nm range by phot..

Hydrogen-adduction to open-shell graphene fragments: spectroscopy, thermochemistry and astrochemistry

Gerard D O'Connor, Bun Chan, Julian A Sanelli, Katie M Cergol, Viktoras Dryza, Richard J Payne, Evan J Bieske, Leo Radom, Timothy W Schmidt

2017-02-01

We apply a combination of state-of-the-art experimental and quantum-chemical methods to elucidate the electronic and chemical ener..

Photo and Collision Induced Isomerization of a Cyclic Retinal Derivative: An Ion Mobility Study

Neville JA Coughlan, Michael S Scholz, Christopher S Hansen, Adam J Trevitt, Brian D Adamson, Evan J Bieske

2016-09-01

A cationic degradation product, formed in solution from retinal Schiff base (RSB), is examined in the gas phase using ion mobility..

Photoisomerization of beta-Ionone Protonated Schiff Base in the Gas Phase

Neville JA Coughlan, Claire M Wallace, Brian D Adamson, Evan J Bieske

2016-08-25

The photoisomerization of β-ionone protonated Schiff base (BIPSB) is investigated in the gas phase by irradiating mobility-selecte..

Ab Initio Characterization of the Electrostatic Complexes Formed by H-2 Molecule and Cr , Mn , Cu , and Zn Cations

Denis G Artiukhin, Evan J Bieske, Alexei A Buchachenko

2016-07-14

Equilibrium structures, dissociation energies, and rovibrational energy levels of the electrostatic complexes formed by molecular ..

Electronic spectrum of 9-methylanthracenium radical cation

Gerard D O'Connor, Julian A Sanelli, Vik Dryza, Evan J Bieske, Timothy W Schmidt

2016-04-21

The predissociation spectrum of the cold, argon-tagged, 9-methylanthracenium radical cation is reported from 8000 cm(-1) to 44 500..

Blue to near-IR energy transfer cascade within a dye-doped polymer matrix, mediated by a photochromic molecular switch

Viktoras Dryza, Trevor A Smith, Evan J Bieske

2016-02-21

The spectroscopic properties of a poly(methyl methacrylate) matrix doped with a coumarin dye, a cyanine dye, and a photochromic sp..

Electronic spectrum of the propargyl cation (H2C3H ) tagged with Ne and N-2

Katherine J Catani, Julian A Sanelli, Viktoras Dryza, Natalie Gilka, Peter R Taylor, Evan J Bieske

2015-11-14

The Ã(1)A1 ← X̃(1)A1 band system of the propargyl cation (H2C3H(+)) is measured over the 230-270 nm range by photodissociation of ..

Gas-phase electronic spectrum of the indole radical cation

N Chalyavi, KJ Catani, JA Sanelli, V Dryza, EJ Bieske

2015-08-18

The visible and near-UV electronic spectrum of the indole radical cation is measured in the gas phase by photodissociation of indo..

Electron Injection and Energy-Transfer Properties of Spiropyran-Cyclodextrin Complexes Coated onto Metal Oxide Nanoparticles: Toward Photochromic Light Harvesting

Viktoras Dryza, Evan J Bieske

2015-06-25

The photochromic and spectroscopic properties of spiropyran-γ-cyclodextrin inclusion complexes coated onto the surface of zirconia..

Does the triphenylamine-based D35 dye sensitizer form aggregates on metal-oxide surfaces?

Viktoras Dryza, Evan J Bieske

2015-04-01

The absorption and emission properties of the D35 organic dye sensitizer attached to zirconia and titania nanoparticles are examin..

Ultraviolet photodissociation action spectroscopy of the N-pyridinium cation

Christopher S Hansen, Stephen J Blanksby, Nahid Chalyavi, Evan J Bieske, Jeffrey R Reimers, Adam J Trevitt

2015-01-07

The S1←S0 electronic transition of the N-pyridinium ion (C5H5NH(+)) is investigated using ultraviolet photodissociation (PD) spect..

Photoisomerization action spectroscopy: flicking the protonated merocyanine-spiropyran switch in the gas phase

Peter B Markworth, Brian D Adamson, Neville JA Coughlan, Lars Goerigk, Evan J Bieske

2015-01-01

Laser spectroscopy and ion mobility spectrometry are combined to provide structural and photochemical information on photoisomeriz..

Retinal shows its true colours: photoisomerization action spectra of mobility-selected isomers of the retinal protonated Schiff base

NJA Coughlan, BD Adamson, L Gamon, K Catani, EJ Bieske

2015-01-01

Retinal is one of Nature's most important and widespread chromophores, exhibiting remarkable versatility in its function and spect..

An ion mobility mass spectrometer for investigating photoisomerization and photodissociation of molecular ions

BD Adamson, NJA Coughlan, PB Markworth, RE Continetti, EJ Bieske

2014-12-01

An ion mobility mass spectrometry apparatus for investigating the photoisomerization and photodissociation of electrosprayed molec..

Ion Mobility Unlocks the Photofragmentation Mechanism of Retinal Protonated Schiff Base

NJA Coughlan, BD Adamson, KJ Catani, U Wille, EJ Bieske

2014-09-18

Retinal protonated Schiff base (RPSB) is a key molecular component of biological photoreceptors and bacterial photosynthetic struc..

Suppressing Forster Resonance Energy Transfer between Organic Dyes on a Cosensitized Metal Oxide Surface

Viktoras Dryza, Evan J Bieske

2014-08-28

Time-resolved fluorescence spectroscopy is used to investigate the efficiency of Förster resonance energy transfer (FRET) between ..

Interaction of the Beryllium Cation with Molecular Hydrogen and Deuterium

Denis G Artiukhin, Jacek Klos, Evan J Bieske, Alexei A Buchachenko

2014-08-21

The structural and spectroscopic properties of the Be(+)-H2 and Be(+)-D2 electrostatic complexes are investigated theoretically. A..

Photoisomerization action spectrum of retinal protonated Schiff base in the gas phase

NJA Coughlan, KJ Catani, BD Adamson, U Wille, EJ Bieske

2014-04-28

The photophysical behaviour of the isolated retinal protonated n-butylamine Schiff base (RPSB) is investigated in the gas phase us..

Laboratory Spectroscopy of PAHs

T Pino, G Feraud, Ph Brechignac, EJ Bieske, TW Schmidt

2014-01-01

Spectroscopic investigations of PAHs have been conducted for many years, commencing with solid and solution studies and more recen..

Photoisomerization Action Spectroscopy of the Carbocyanine Dye DTC in the Gas Phase

Brian D Adamson, Neville JA Coughlan, Gabriel da Silva, Evan J Bieske

2013-12-19

Molecular photoisomerization plays a crucial role in diverse biological and technological contexts. Here, we combine ion mobility ..

Non-covalent interactions between metal cations and molecular hydrogen: spectroscopic studies of M -H-2 complexes

V Dryza, EJ Bieske

2013-12-01

We describe recent infrared spectroscopic investigations of charged complexes consisting of a hydrogen or deuterium molecule attac..

Electronic Spectroscopy of the 1,3-Cyclopentadiene Cation (C5H6 )

Nahid Chalyavi, Julian A Sanelli, Viktoras Dryza, Evan J Bieske

2013-11-07

The gas-phase electronic spectrum of the 1,3-cyclopentadiene radical cation (C5H6(+)) has been investigated using resonance-enhanc..

Gas-phase electronic spectroscopy of the indene cation (C9H8 )

Nahid Chalyavi, Viktoras Dryza, Julian A Sanelli, Evan J Bieske

2013-06-14

The electronic spectrum of the indene radical cation has been investigated through resonance-enhanced photodissociation of the wea..

Changing the shape of molecular ions: photoisomerization action spectroscopy in the gas phase

BD Adamson, NJA Coughlan, RE Continetti, EJ Bieske

2013-01-01

A new approach for studying the photoisomerization of molecular ions in the gas phase is described. Packets of molecular ions are ..

Photophysics and aggregation effects of a triphenylamine-based dye sensitizer on metal-oxide nanoparticles suspended in an ion trap

Viktoras Dryza, Jessica L Nguyen, Tae-Hyuk Kwon, Wallace WH Wong, Andrew B Holmes, Evan J Bieske

2013-01-01

The photophysical behaviour of a triphenylamine-based organic dye sensitizer (Carbz-PAHTDTT) attached to alumina and titania nanop..

Electronic absorptions of the benzylium cation

Viktoras Dryza, Nahid Chalyavi, Julian A Sanelli, Evan J Bieske

2012-11-28

The electronic transitions of the benzylium cation (Bz(+)) are investigated over the 250-550 nm range by monitoring the photodisso..

Properties of the B -H-2 and B -D-2 complexes: A theoretical and spectroscopic study

BLJ Poad, V Dryza, AA Buchachenko, J Klos, EJ Bieske

2012-09-28

The rotationally resolved infrared spectrum of the B(+)-D(2) ion-neutral complex is recorded in the D-D stretch vibration region (..

Attaching molecular hydrogen to metal cations: perspectives from gas-phase infrared spectroscopy

Viktoras Dryza, Berwyck LJ Poad, Evan J Bieske

2012-01-01

In this perspective article we describe recent infrared spectroscopic investigations of mass-selected M(+)-H(2) and M(+)-D(2) comp..