The dynamic FTIR spectra of propanol in the argon matrix have been measured using a thermal perturbation by heating sample from T = 11 K to 30 stepping 1 K. 2D Fourier-transform infrared (FTIR) absorption correlation analysis has carried out, main attention being concentrated region O–H stretching vibrations at 3000–3700 cm–1. peaks monomers, two conformers open dimer, and cyclic structures dim...

Vibrational spectroscopy (VS) is the analysis of molecular properties based on vibrations at the molecular level and it is highly selective1. VS produces a spectral fingerprint of a material, such as an active pharmaceutical ingredient (API), so is well-suited to both identify and verify the API raw material and its presence in a final product. There are three related analytical techniques that...

Background For decades, FTIR spectroscopy has been the method of choice for detecting, identifying, and establishing the purity of chemical compounds based on their infrared absorption properties. The method typically employs a thermal radiation source emitting in the 2.5 to 25 μm spectral range (e.g., GlobarTM ). The light emitted by the source is split into two beams, one of them passing thro...

The oxidation of methanol over highly dispersed vanadia supported on TiO2 (anatase) has been investigated using in situ Fourier transform infrared spectroscopy (FTIR), near ambient pressure X-ray photoelectron spectroscopy (NAP XPS), X-ray absorption near-edge structure (XANES), and a temperature-programmed reaction technique. The data were complemented by kinetic measurements collected in a fl...

Functionalization of ultrasmall semiconductor nanoparticles to develop new luminescent probes that are optically bright, stable in aqueous environments, and sized comparably to small organic fluorophores would be of considerable utility for myriad applications in biology. Here, we report one of the first examples of thermal hydrosilylation between a bi-functional alkene and ultrasmall (y1 nm) H...

FTIR spectroscopy is advantageous for detecting changes in polar chemical bonds that participate in bacterio rhodopsin function. Changes in H bonding of Asp85, Asp96, the Schiff base, and internal water molecules around these residues upon the formation of the L, M, and N photo intermediates of bacteriorhodopsin were investigated by difference FTIR spectroscopy. The locations and the interactio...

Thiol-functionalized porous silicon (PS) monolayer was evaluated for its possible application in As (III) adsorption. Dimercaptosuccinic acid (DMSA) attached to mesoporous silicon via amide bond linkages was used as a chelate for As (III). Two different aminosilanes namely 3-(aminopropyl) triethoxysilane (APTES) and 3-aminopropyl (diethoxy)-methylsilane (APDEMS) were tested as linkers to evalua...

The adsorption of water and deuterium oxide on TiO2 surfaces was investigated in the dark as well as under UV(A) irradiation using in situ ATR-FTIR spectroscopy under oxygen and oxygen free conditions. Adsorption of H2O-D2O mixtures revealed an isotopic exchange reaction occurring onto the surface of TiO2 in the dark. Under UV(A) irradiation, the amount of both OH and OD groups was found to be ...