Sweet X-ray spectroscopy

We recently realised that Near-edge X-ray absorption fine-structure (NEXAFS) spectroscopy at the C K-edge can distinguish between different saccharides because minute variations in average C-O bond lengths manifest as detectable shifts of the shape resonances associated with these bonds. This opens up the possibility for novel analytical approaches, for example to identify different types of sugars in drug formulations or foods:

NEXAFS Sensitivity to Bond Lengths in Complex Molecular Materials: A Study of Crystalline Saccharides
A. Gainar, J. S. Stevens, C. Jaye, D. A. Fischer & S. L. M. Schroeder
Journal of Physical Chemistry B 119 (2015), in press.

2015 Publications So Far…

The group has had a good run of publications this year. So far our 2015 output of papers includes:

Intermolecular Bonding of Hemin in Solution and in Solid State Probed by N K-edge X-ray Spectroscopies
R. Golnak, J. Xiao, K. Atak, J. S. Stevens, A. Gainar, S. L. M. Schroeder & E. F. Aziz
Physical Chemistry – Chemical Physics 17 (2015), accepted.
DOI: 10.1039/C5CP04529K
Fenton-Like Oxidation of 4−Chlorophenol: Homogeneous or Heterogeneous?
C.-C. Kuan, S.-Y. Chang, S. L. M. Schroeder
Industrial & Engineering Chemistry Research 54 (2015) 8122–8129.
DOI: 10.1021/acs.iecr.5b02378
Gold Deposition at a Free-Standing Liquid/Liquid Interface, Evidence for the Formation of Au(I) by Microfocus X-ray Spectroscopy (μXRF and μXAFS) and Cyclic Voltammetry
S. G. Booth, A. Uehara, S.-Y. Chang, J. F. W. Mosselmans, S. L. M. Schroeder, R. A. W. Dryfe
Journal of Physical Chemistry C 119 (2015) 16785–16792.
DOI: 10.1021/acs.jpcc.5b05127
Synthesis of Polyurea-Polyether Core Shell Nanoparticles via Spontaneous Nanoprecipitation
P. Locatelli, S. Woutters, C. Lindsay, S. L. M. Schroeder, J. H. Hobdell & A. Saiani
RSC Advances 5 (2015) 41668-41676.
DOI: 10.1039/c5ra03662c
Structure and Bonding in Au(I) Chloride Species: A Critical Examination of X-ray Absorption Spectroscopy (XAS) Data
S.-Y. Chang, A. Uehara, S. G. Booth, K. Ignatyev, J. F. W. Mosselmans, R. A. W. Dryfe, S. L. M. Schroeder
RSC Advances 5 (2015) 6912-6918.
DOI: 10.1039/C4RA13087A
Proton Transfer, Hydrogen Bonding, and Disorder: Nitrogen NEXAFS and XPS of Bipyridine-Acid Salts and Co-crystals
J. S. Stevens, L. K. Newton, C. Jaye, C. A. Muryn, D. A. Fischer & S. L. M. Schroeder
Crystal Growth & Design 15 (2015) 1776-1783.
DOI: 10.1021/cg5018278
Self-Association of Organic Solutes in Solution: A NEXAFS Study of Aqueous Imidazole
M. J. Thomason, C. R. Seabourne, B. M. Sattelle, G. A. Hembury, J. S. Stevens, A. J. Scott, E. F. Aziz & S. L. M. Schroeder
Faraday Discussions 179 (2015) 269-289..
DOI: 10.1039/C5FD00005J
Chemical Speciation and Bond Lengths of Organic Solutes by Core Level
Spectroscopy: pH- and Solvent-Influence on p-Aminobenzoic Acid

J. S. Stevens, A. Gainar, E. Suljoti, J. Xiao, R. Golnak, E. F. Aziz & S. L. M. Schroeder
Chemistry – A European Journal 21 (2015) 7256-7263.
DOI: 10.1002/chem.201405635

Postdoc position – application deadline 16 January 2014

Research Associate,  Surface and Interface Analysis

Closing date : 16/01/2014

Employment type : Fixed Term

Duration : 1 year in the first instance, then another 3 years subject to review

Location : Sackville Street, Manchester

Salary : £29,837 to £36,661 per annum

Hours per week : Full-time

Follow this link for more details and the application forms

Matt Thomason passed PhD viva

On Friday, 22 March 2013 our group member Matt Thomason passed his PhD examination subject to minor corrections in his PhD thesis, Soft X-ray Spectroscopy of Molecular Species in Solution: Studies of Imidazole and Imidazole/Water Systems.

Congratulations Matt!

Success! VERSOX Beamline at DIAMOND Funded

It was announced today that the VERSOX soft X-ray spectroscopy beamline project at DIAMOND Light Source Ltd has been funded. Sven was one of the original proposers of this project, and as a member of the VERSOX Working Group he contributed to developing the case for supporting this beamline project. This beamline will provide our research team with a unique instrument for studying local interactions in organic materials, their nucleation – and surface chemistry in general. What makes VERSOX unique is its versatility – extending the use of soft X-ray spectroscopy beyond its traditional confines in ultra-high vacuum surface physics and chemistry. For example, soft X-ray studies of ‘wet’ soft matter, practical catalytic systems, biomaterials, pharmaceuticals, liquids and solutions will become possible for the first time in the UK. Right from the design stage the project will also take account of the needs of applied science and industrial users. As such it matches perfectly onto our research philosophy, which brings together fundamental science with its practical application.

More information is available by following this link.

Oral presentations at CGOM9

Our team will contribute three talks at the 9th International Conference on Crystal Growth of Organic Materials, (CGOM9), 4-7 August in Singapore.

Hamizah will speak about “Surfaces Analysis of Molecular Crystals: Studies of Paracetamol by X-ray Photoelectron Spectroscopy (XPS)

Vicky presents “Polymorphism from a Solution Perspective: Rationalisation at the Molecular Level”.

Sven will summarise our soft X-ray spectroscopy work: “Co-Crystals, Coatings, Contamination and Clusters: Core Level Spectroscopies as a Probe for Local Bonding in Molecular Systems