Column: Molecular Spectroscopy Workbench

Fran Adar is the Worldwide Raman Applications manager for Horiba Jobin Yvon.

Articles

Raman spectra can help determine protein structure. Here’s how.

Interpretation of Raman Spectrum of Proteins

David Tuschel is a Raman applications manager at Horiba Scientific in Edison, New Jersey, where he works with Fran Adar. David is sharing authorship of the "Molecular Spectroscopy Workbench" column with Fran.

We explain how to characterize barium fluorohalides with Raman spectroscopy.

Raman Spectroscopy and Chemical Bonding of BaFCl, BaFBr, and BaFl

Innovative database search technology can help Raman spectroscopists identify molecular vibrations; here, we show how to use these tools more effectively.

A Simple Introduction to Raman Spectral Identification of Organic Materials

To better understand Raman spectral profiles, we briefly examine spectral line shapes, while discussing spectral shape, bandwidth, and broadening as percentage of Gaussian and Lorentzian components.

Peak Shape and Closely Spaced Peak Convolution in Raman Spectra

We illustrate how matching the optical properties of the microscope objective with the sample properties improves the spatial resolution and chemical speciation in depth profile measurements using confocal Raman microscopy.

Effect of Sampling Optics on Raman Depth Profiling

Raman and photoluminescence spectroscopy were combined with imaging to examine the spatial variation of solid-state structure and electronic character of two-dimensional (2-D) tungsten disulfide (WS2) crystals, which represent a family of new inorganic 2-D materials.

Combined Raman and Photoluminescence Imaging of Two-Dimensional WS2

Raman spectra were measured in combination with 2D-COS analysis to understand how the addition of propyl side groups to a biopolymer backbone influences the structure of the polymer at the atomic level.

Assignment of Raman Bands of a Set of Biopolymers with Small Increases in an Added Functional Group

Raman spectroscopy is extremely useful for characterizing crystalline materials.

Raman Crystallography and the Effect of Raman Polarizability Tensor Element Values

Low frequency Raman scattering measurements can be used to predict
physical properties of polymers and the crystalline polymorphic form of
active pharmaceutical ingredients (APIs). These measurements are made by recording the Stokes and anti-Stokes side of the laser line with the laser centered on the detector. Spectra of polyethylene and linear alkanes were recorded down to 4 cm-1.

Very Low Frequency Measurements of Linear Alkanes

Raman imaging provides detailed crystal orientation information for two-dimensional MoS2 prepared by chemical vapor deposition on silicon substrates. These two-dimensional crystals consist of individual atomic layers of sulfur, molybdenum, and sulfur atoms.