Category

Characterization

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...
Marie
8 April 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsFractal dimensionMaterialPolymer researchSAXSTechniqueWAXS

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…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialOrientation analysisPolymer researchSAXSTechniqueTemperatureTensileUSAXS

Cavitation in Poly(4-methyl-1-pentene) during Tensile Deformation

Chen, Ran; Lu, Ying; Jiang, Zhiyong; Men, Yongfeng

The poly(4-methyl-1-pentene) sample was used to investigate the cavitation-induced stress-whitening phenomenon during stretching at different temperatures via the ultrasmall-angle X-ray scattering technique. Two modes of cavitation were found that mode I cavitation activated around yield point followed by mode II cavitation generated in highly oriented state. The critical strain for…
Xenocs
12 March 2019
Characteristic dimensionCustomer publicationsFibersOtherSAXSWAXS

Determination of the packing model of a supramolecular nanofiber via mass-per-length measurement and de novo simulation

Yao, Qingxin; Bao, Qiang; Li, Xinming; Wang, Hui; Yang, Zhenyu; Shi, Xinghua; Gao, Yuan; Xu, Bing

Herein, we report an example of using scanning transmission electron microscopy to determine the mass-per-length of supramolecular nanofibers. Together with the measurement of the diameter of nanofibers via transmission electron microscopy, we could estimate the packing density of assembling molecules along the nanofibers. A parallel unbiased de novo simulation screens…
Xenocs
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialsMaterialNanoparticles & colloidsParticle size and size distributionParticlesPhase analysisPorous materialSAXSTechnique

Highly Selective Continuous Flow Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol in a Pt/SiO2 Coated Tube Reactor

Bai, Yang; Cherkasov, Nikolay; Huband, Steven; Walker, David; Walton, Richard; Rebrov, Evgeny;

A novel continuous flow process for selective hydrogenation of α, β-unsaturated aldehyde (cinnamaldehyde, CAL) to the unsaturated alcohol (cinnamyl alcohol, COL) has been reported in a tube reactor coated with a Pt/SiO2 catalyst. A 90% selectivity towards the unsaturated alcohol was obtained at the aldehyde conversion of 98.8%. This is…
Xenocs
12 March 2019
Customer publicationsPhase analysisPorous materialSAXSStructural biology

Immobilization of the enzyme invertase in SBA-15 with surfaces functionalized by different organic compounds

Ribeiro, Livia M. O.; Falleiros, Larissa N. S. S.; de Resende, Miriam M.; Ribeiro, Eloízio J.; Almeida, Renata M. R. G.; da Silva, Antonio O. S.

The search for appropriate supports for enzyme immobilization has attracted increasing interest in the field of biocatalysis. Immobilized enzymes are catalysts of enormous industrial interest because they combine the advantages of heterogeneous catalysis with the high selectivity and mild operational conditions of enzymes. This study evaluated the use of different…
Xenocs
12 March 2019
ApplicationCharacterizationCustomer publicationsFibersMaterialOrientation analysisRenewable energySAXSTechnique

Scalable, anisotropic transparent paper directly from wood for light management in solar cells

Jia, Chao; Li, Tian; Chen, Chaoji; Dai, Jiaqi; Kierzewski, Iain Michael; Song, Jianwei; Li, Yiju; Yang, Chunpeng; Wang, Chengwei; Hu, Liangbing

The growing demand for flexible electronics and solar energy conversion devices has fueled a search for high-quality paper-based materials with excellent mechanical flexibility and optical properties such as high transparency and haze. Despite the tremendous efforts have been dedicated to developing paper-based materials with high transparency or high haze, challenges…
Xenocs
12 March 2019
ApplicationCharacterizationCustomer publicationsInorganic materialsMaterialNanoparticles & colloidsParticle size and size distributionParticlesSAXSTechnique

Precursor non-stoichiometry to enable improved CH3NH3PbBr3 nanocrystal LED performance

Chandran, Bevita K.; Veldhuis, Sjoerd A.; Chin, Xin Yu; Bruno, Annalisa; Yantara, Natalia; Chen, Xiaodong; Mhaisalkar, Subodh

High photoluminescence quantum yields and narrow emission wavelengths, combined with low temperature solution processing, make CH3NH3PbBr3 nanocrystals (NCs) favorable candidates for light-emitting applications. Herein, we describe the synthesis of CH3NH3PbBr3 NC inks by a convenient room-temperature ligand assisted reprecipitation protocol. We further investigate the effect of modulation of the…
Xenocs
12 March 2019
Customer publicationsProteins & DNA/RNASAXSShapeStructural biology

Structural analysis of mtEXO mitochondrial RNA degradosome reveals tight coupling of nuclease and helicase components

Razew, Michal; Warkocki, Zbigniew; Taube, Michal; Kolondra, Adam; Czarnocki-Cieciura, Mariusz; Nowak, Elzbieta; Labedzka-Dmoch, Karolina; Kawinska, Aleksandra; Piatkowski, Jakub; Golik, Pawel; Kozak, Maciej; Dziembowski, Andrzej; Nowotny, Marcin

The mitochondrial RNA degradosome (mtEXO) plays an essential role in the regulation of mitochondrial gene expression and is composed of the 3′-to-5′ exoribonuclease Dss1 and the helicase Suv3. Here the authors present the RNA bound mtEXO crystal structure and give insights into its…
Xenocs
12 March 2019