Publication

Local modes of HOOH probed by optical‐infrared double resonance

Thomas Rizzo
1991
Journal Articles

Abstract

We have used an optical-infrared double resonance technique to probe the nature of the eigenstates prepared by 4-nu-OH vibrational overtone excitation in hydrogen peroxide. A visible dye laser excites the 4

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https://infoscience.epfl.ch/entities/publication/c6b7f209-5117-4234-b00c-70ad0b02d4ef

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Thomas Rizzo
1991
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c6b7f209-5117-4234-b00c-70ad0b02d4ef

About this result

Related concepts (32)

Molecular vibration

A molecular vibration is a periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged. The typical vibrational frequencies range from less than 1013 Hz to approximately 1014 Hz, corresponding to wavenumbers of approximately 300 to 3000 cm−1 and wavelengths of approximately 30 to 3 μm. For a diatomic molecule A−B, the vibrational frequency in s−1 is given by , where k is the force constant in dyne/cm or erg/cm2 and μ is the reduced mass given by .

Rotational–vibrational spectroscopy

Rotational–vibrational spectroscopy is a branch of molecular spectroscopy concerned with infrared and Raman spectra of molecules in the gas phase. Transitions involving changes in both vibrational and rotational states can be abbreviated as rovibrational (or ro-vibrational) transitions. When such transitions emit or absorb photons (electromagnetic radiation), the frequency is proportional to the difference in energy levels and can be detected by certain kinds of spectroscopy.

Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or reflection. It is used to study and identify chemical substances or functional groups in solid, liquid, or gaseous forms. It can be used to characterize new materials or identify and verify known and unknown samples. The method or technique of infrared spectroscopy is conducted with an instrument called an infrared spectrometer (or spectrophotometer) which produces an infrared spectrum.

Related publications (5)

Local modes of HOOH probed by optical‐infrared double resonance

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Space charge and polarization effects upon doping organic light-emitting diodes with pyran-containing donor-acceptor molecules

State-to-state studies of intramolecular energy transfer in highly excited HOOH(D): Dependencies on vibrational and rotational excitation