Customer publications

Here is a list of publications involving a Xenocs SAXS/WAXS system in the experimental conditions.

Customer publicationsParticle size and size distributionProteins & DNA/RNASAXSShapeStructural biology

Size-exclusion chromatography small-angle X-ray scattering of water soluble proteins on a laboratory instrument

S. Bucciarelli, S. R. Midtgaard, M. Nors Pedersen, S. Skou, L. Arleth and B. Vestergaard

Coupling of size-exclusion chromatography with biological solution small-angle X-ray scattering (SEC-SAXS) on dedicated synchrotron beamlines enables structural analysis of challenging samples such as labile proteins and low-affinity complexes...
8 April 2019
Customer publications

Anomalies in the low frequency vibrational density of states for a polymer with intrinsic microporosity – the Boson peak of PIM-1

Zorn, Reiner; Yin, Huajie; Lohstroh, Wiebke; Harrison, Wayne; Budd, Peter M.; Pauw, Brian R.; Böhning, Martin; Schönhals, Andreas

Polymers with intrinsic microporosity are promising candidates for the active separation layer in gas separation membranes. Here, the vibrational density of states (VDOS) for PIM-1, the prototypical polymer with intrinsic microporosity, is investigated by means of inelastic neutron scattering. The results are compared to data measured for a more conventional…
12 March 2019
Customer publications

D–A1–D–A2 Copolymer Based on Pyridine-Capped Diketopyrrolopyrrole with Fluorinated Benzothiadiazole for High-Performance Ambipolar Organic Thin-Film Transistors

Li, Ping; Xu, Long; Shen, Hongguang; Duan, Xianming; Zhang, Jianqi; Wei, Zhixiang; Yi, Zhengran; Di, Chong-an; Wang, Shuai

A novel donor–acceptor–donor–acceptor (D–A1–D–A2) π-conjugated copolymer (PDBPyDT2FBT) has been prepared by Stille coupling reaction. It is found that PDBPyDT2FBT exhibits low LUMO energy level mainly because of multiple electron-deficient units and donor–acceptor interaction, which is favorable to obtain more efficient electron injection and transport in organic thin-film transistors (OTFTs).…
12 March 2019
Customer publications

Photo-responsive liquid crystals derived from azobenzene centered cholesterol-based tetramers

Gupta, Monika; Pal, Vaibhav; Pal, Santanu Kumar

This paper demonstrates the design and synthesis of azobenzene centred cholesterol based tetramers. A series of eight oligomeric compounds with varying flexible alkyl spacers (n = 1–8) is reported. These compounds displayed enantiotropic and monotropic chiral nematic (N*) mesophases, which were characterized by polarized optical microscopy (POM), differential scanning calorimetry…
12 March 2019
Customer publications

Solvent-Controlled Assembly of Aromatic Glutamic Dendrimers for Efficient Luminescent Color Conversion

Xing, Pengyao; Yang, Chaolong; Wang, Yang; Phua, Soo Zeng Fiona; Zhao, Yanli

A binary supramolecular system where self-sorting and coassembly behavior can be switched by changing the solvent polarity is hereby reported. Glutamic dendron is separately conjugated with pyrene and naphthalimide luminophores through an alkyl spacer. The resulting structurally similar building units can self-assemble into one-dimensional micro/nanostructures with hexagonal and lamellar packing,…
12 March 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisSAXSSelf-assembled materialStructural biologyTechnique

Effects of oxidation on the physicochemical properties of polyunsaturated lipid membranes

Parra-Ortiz, Elisa; Browning, Kathryn L.; Damgaard, Liv S. E.; Nordström, Randi; Micciulla, Samantha; Bucciarelli, Saskia; Malmsten, Martin

The exposure of biological membranes to reactive oxygen species (ROS) plays an important role in many pathological conditions such as inflammation, infection, or sepsis. ROS also modulate signaling processes and produce markers for damaged tissue. Lipid peroxidation, mainly affecting polyunsaturated phospholipids, results in a complex mixture of oxidized products, which…
12 March 2019
Customer publications

“Bottom-up” self-assembly and “cold crystallization” of butterfly shaped tetrabenzofluorene molecules

Sampath, Srinivasan; Boopathi, A. A.; Mandal, A. B.

Butterfly-shaped tetrabenzofluorene (TBF)-based molecules (1 and 2) were designed, synthesized and well characterized using various spectroscopic techniques. The single crystal X-ray structure of 1 shows the presence of intermolecular 3-D π–π stacking interaction and unprecedented “cold crystallization” in polycyclic aromatic molecules. We report for the first time, the “bottom-up”…
12 March 2019
Customer publications

Crystallization of Polymer Chains Chemically Attached on a Surface: Lamellar Orientation from Flat-on to Edge-on

Chen, Yihuang; Gan, Tiansheng; Ma, Chunfeng; Wang, Linge; Zhang, Guangzhao

Crystallization of polymer chains confined on a surface greatly influences surface properties. We have grafted comb-like copolymer, consisting of poly(2-hydroxyethyl methacrylate) (PHEMA) backbone and semicrystalline poly(ε-caprolactone) (PCL) side chains, on silicon surface and investigated the crystallization of such confined PCL chains upon solvent evaporation by using atomic force microscopy…
12 March 2019