Concept
Raman optical activity
Related publications (10)
Quantum engineering and detection of advanced radiation beams
Controlling and shaping radiation beams is fundamental for a better understanding of radiation-matter interaction and advancing experimental techniques for material characterization at high spatial resolution.In particular, the current trend in the miniatu ...
EPFL2023Hard X-ray helical dichroism of disordered molecular media
Majed Chergui, Oliviero Cannelli, Giulia Fulvia Mancini, Malte Oppermann, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Christian David, Jérôme Lacour
Chirality is a structural property of molecules lacking mirror symmetry that has strong implications in diverse fields, ranging from life sciences to materials science. Chirality-sensitive spectroscopic methods, such as circular dichroism, exhibit weak sig ...
NATURE PORTFOLIO2022Correlation between Optical Activity and the Helical Molecular Orbitals of Allene and Cumulenes
Helical frontier molecular orbitals (MOs) appear in disubstituted allenes and even-n cumulenes. Chiral molecules are optically active, but while these molecules are single-handed chiral, p-orbitals of both helicities are present. Here we computationally ex ...
AMER CHEMICAL SOC2020Probing Molecular Chirality by Orbital-Angular-Momentum-Carrying X-ray Pulses
A twisted X-ray beam with orbital angular momentum is employed in a theoretical study to probe molecular chirality. A nonlocal response description of the matter-field coupling is adopted to account for the field short wavelength and the structured spatial ...
AMER CHEMICAL SOC2019Exploring the Extent in the Visual Field of the Honeycomb and Extinction Illusions
Michael Herzog, Aline Françoise Cretenoud
There are situations in which what is perceived in central vision is different to what is perceived in the periphery, even though the stimulus display is uniform. Here, we studied two cases, known as the Extinction illusion and the Honeycomb illusion, invo ...
2019Spontaneous Cdc42 Polarization Independent of GDI-Mediated Extraction and Actin-Based Trafficking
The small Rho-family GTPase Cdc42 is critical for cell polarization and polarizes spontaneously in absence of upstream spatial cues. Spontaneous polarization is thought to require dynamic Cdc42 recycling through Guanine nucleotide Dissociation Inhibitor (G ...
Public Library Science2015Role of sulfur in BaVS3 probed by S K-edge absorption spectroscopy
We show that the quasi-1D behavior of BaVS3 can be understood analyzing the X-ray absorption near edge spectra at the sulfur K edge. Linear dichroism experiments, analyzed with the help of ab initio calculations, reveal two strong and polarization dependen ...
Elsevier Science Bv2015Optically Active Trialkynyl(phenyl)methane: synthesis and Determination of Its Absolute Configuration by Vibrational Circular Dichroism (VCD) and Optical Rotatory Dispersion (ORD)
Both enantiomers of an optically active trialkynyl(phenyl)methane (the key building blocks in the construction of a stable expanded cubane) have been prepd. The strategy involved the resoln. of a racemic intermediate by means of HPLC on a chiral stationary ...
2010Nonfouling Polypeptide Brushes via Surface-initiated Polymerization of N-epsilon-oligo(ethylene glycol)succinate-L-lysine N-carboxyanhydride
Jian Wang, Harm-Anton Klok, Matthew Gibson, Raphaël Barbey
This contribution describes the preparation of nonfouling polypeptide brushes via surface-initiated ring-opening polymerization of oligo(ethylene glycol) modified L-lysine N-carboxyanhydrides. Circular dichroism experiments indicated that these surface-anc ...
2009Hyper-Rayleigh scattering of gold nanorods and their relationship with linear assemblies of gold nanospheres
Hubert Girault, Pierre-François Marie Brevet, Jean-Pierre Abid
The surface plasmon enhanced hyper-Rayleigh scattering light collected from an aqueous solution of gold nanorods is reported. A non negligible part of the signal is attributed to a photoluminescence background attributed to the electron–hole recombination ...
2004