Good vibrations: A review on the scientific work of John van der Maas

Visser, Taco D.

doi:10.1016/j.vibspec.2006.05.034

Cited by 2 publications

(1 citation statement)

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“…Vibrational absorption spectroscopy is a natural choice for probing self-association and gaining insight into molecular structure and solute–solvent interactions. The works of van der Maas and colleagues have detailed the O–H band-structure correlations for a great number of molecular systems using characteristics such as band position, intensity, and bandwidth. , A number of studies have investigated the self-association of aliphatic alcohols using vibrational absorption spectroscopy; often, the free O–H stretching transition is attributed to monomeric alcohol, and a simple two-component equilibrium between monomer and aggregate forms is assumed to estimate equilibrium constants for self-association. ,,, However, laboratory and molecular dynamics computational studies have suggested that even relatively dilute solutions of alcohols in nonpolar solvents are too complex in composition to be characterized by a two-component equilibrium. , …”

Section: Introductionmentioning

confidence: 99%

Cavity-Enhanced Overtone Spectroscopy of Methanol in Aprotic Solvents: Probing Solute–Solvent Interactions and Self-Associative Behavior

Kuen

Feierabend

2014

J. Phys. Chem. A

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Methanol in aprotic solvents can serve as a case study for self-association via hydrogen-bonding, which is an important process in many biological and environmental systems. Incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS), which provides enhanced sensitivity relative to conventional single-pass absorption techniques, has been used to characterize the third "free" O-H stretching overtone of methanol in four aprotic solvents (CCl4, CHCl3, CH2Cl2, and C6H6), including the transition wavenumber, bandwidth, and molar absorptivity. The absorption band characteristics indicate an increasing degree of nonspecific methanol-solvent interaction with increasing solvent dielectric constant, except in the case of benzene, which shows evidence of a specific, H-π interaction. Density functional theory with the polarizable continuum model was used to complement the results by assessing the accuracy of computational methods for calculating anharmonic O-H stretching frequencies. Finally, the self-association of methanol in these solvents at 298 K was also investigated using the concentration dependence of the overtone absorption intensity. The propensity for methanol's self-association in the solvents studied increases in the order: CH2Cl2 ∼ CHCl3 < C6H6 < CCl4.

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