The interaction between synthetic glycoplymers bearing beta-D-galactose side groups and the lectin peanut agglutinin (PNA) was investigated by UV-difference spectroscopy and isothermal titration calorimetry (ITC). UV-difference spectroscopy indicated that the polymer-lectin interaction was stronger than that between PNA and either the corresponding monomer, D-galactose or D-lactose. The thermod...

A rosane type diterpenoid has been isolated from the ethyl acetate soluble fraction of Stachys parviflora. The structure elucidation was based primarily on 1Dand 2D-NMR techniques including correlation spectroscopy (COSY), heteronuclear multiple quantum coherence (HMQC), heteronuclear multiple bond correlation (HMBC), and nuclear Overhauser effect spectroscopy (NOESY). Density functional theory...

Steviol glycosidesrebaudioside (reb) A, C and D have low aqueous solubilities. To improve their aqueous solubilities, inclusion complex of steviol glycosides, reb A, C and D and gamma cyclodextrin were prepared by freeze drying method and further characterized by means of differential scanning calorimetry, Fourier transform infrared spectroscopy and Raman spectroscopy. The effect of gamma cyclo...

The self-aggregation of the oligonucleotide d(T4isoG4T4) (1) is investigated. Based on ion exchange HPLC experiments and CD spectroscopy, a tetrameric structure is identified. This structure was formed in the presence of sodium ions and shows almost the same chromatographic mobility on ion exchange HPLC as d(T4G4T4) (2). The ratio of aggregate versus monomer is temperature dependent and the tet...

Four new triterpenoid saponins, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23-hydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23,29-dihydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-29-hydroxysaikogenin F and 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)...

A. Grüneis,1,2 C. Attaccalite,3 A. Rubio,3 D. V. Vyalikh,4 S. L. Molodtsov,4 J. Fink,2,5 R. Follath,5 W. Eberhardt,5 B. Büchner,1 and T. Pichler1 1Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria 2IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany 3Departamento de Fisica de Materiales, Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facili...

Donor polymer PBDB-T and acceptor PF5-Y5 form D–A complexes in solution, as confirmed by combined absorption, excitation, emission spectroscopy of blend solutions.

$3{d}^{2}$ vanadate perovskites exhibit an unusual phase diagram where the low temperature orbital and spin orders are strongly dependent upon rare-earth cation size. Here, we demonstrate delicate role of strain in epitaxial ${\mathrm{LaVO}}_{3}$ films by performing low-energy muon spectroscopy ellipsometry measurements. The electronic structure is revealed measurement multipeak charge excitati...

F. Caruso,1,2,* P. Rinke,1,2 X. Ren,1,2 M. Scheffler,1,2 and A. Rubio1,2,3 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany 2European Theoretical Spectroscopy Facility 3Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Universidad del Paı́s Vasco, CFM CSIC-UPV/EHU-MPC and DIPC, Avenida Tolosa 72, E-20018 Donostia, Spain (Received 13 Dec...

We use sum-frequency generation spectroscopy (SFG) in the infrared 2800–3000 cm−1 spectral range and UV–vis spectroscopy (transmission) in the 450–650 nm spectral range in order to characterize vibrational and electronic properties of various interfaces composed of organic monolayers adsorbed on gold nanoparticles (AuNPs) with 19 nm average diameter. SFG signal is observed for AuNPs films depos...