نتایج جستجو برای: circular dichroism cd
تعداد نتایج: 114301 فیلتر نتایج به سال:
Abstract Nanoscale particles and structures hold promise in circular dichroism (CD) spectroscopy for overcoming the weakness of molecular CD signals. Significant effort have been made to characterize nanophotonic enhancement find efficient ways boost chirality, but best solution is yet be found. In this paper, we present a rigorous analytic study typical nanoparticles. We consider metallic diel...
— The temperature dependence of the optical absorption bands and of the magnetic circular dichroism are measured for the Au" centre in KBr and RbCl. The data are analyzed with the method of moments by using six electron-lattice interaction coefficients to describe the coupling of the | 1 r l u > and | Tlu > excited states with the AXg, Eg and T2g lattice modes. The centre is found to be coupled...
Magnetic circular dichroism is used to investigate the evolution of ferromagnetism in the p-type magnetic semiconductor Ga12xMnx As. Local Mn moments and holes produce two spectroscopically distinct contributions, whose properties reveal an antiferromagnetic Mn-hole alignment in the ferromagnetic state. These components are present in both metallic and insulating samples with different temperat...
We generate angularly isolated beams of circularly polarized extreme ultraviolet light through the first implementation of non-collinear high harmonic generation with circularly polarized driving lasers. This non-collinear technique offers numerous advantages over previous methods, including the generation of higher photon energies, the separation of the harmonics from the pump beam, the produc...
human serum albumin (hsa) is an abundant, multifunctional and nonglycosylated negatively charged plasma protein. hsa ascribed ligand-binding and transport properties, antioxidant functions and enzymatic activities. in the present study, the interaction and side effects of a new designed anti-cancer compound (1,10-phenanthroline butyl dithiocarbamato palladium(ii) nitrate) on hsa have been inves...
When methanol, a nonsolvent, was added to dilute tetrahydrofuran solutions of an optically active polyfluorene derivative, liquid–liquid phase separation occurred, and circular dichroism (CD) was induced at a low temperature. The polymer concentration of the minor separating phase, estimated by light scattering, was very high (B0.4 g cm 3). The CD induction occurring in that concentrated phase ...
The higher-order structure of proteins as well their thermal stability can be determined using the circular dichroism (CD). CD is a common approach for swiftly assessing binding, secondary structure, and folding properties proteins. In nutshell, an absorption spectroscopy technique that employs circularly polarized light to explore structural optically active chiral compounds. Biological molecu...
Quantitative analysis of shadow X-ray Magnetic Circular Dichroism Photo-Emission Electron Microscopy
Polyoxins are antifungal antibiotics isolated from Streptomyces cocaoi var. asoensis.1) They are unique dior tripeptides which can be designated as the 'pep tidic nucleoside' composed of characteristic L-amino acids such as polyoximic acid (I), polyoxamic acid (II) and polyoxin C or its analogues (III) with a nucleoside moiety2) Among them the circular dichroism (CD) of the pyrimidine nucleosid...
We performed angle-resolved photoemission (ARPES) experiments with circularly polarized light and first-principles density functional calculation with spin-orbit coupling to study surface states of a topological insulator Bi2Se3. We observed circular dichroism (CD) as large as 30% in the ARPES data with upper and lower Dirac cones showing opposite signs in CD. The observed CD is attributed to t...
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