Reassignment of <i>ν</i>2,3 IR band of the allyl radical in liquid helium nanodroplets

Habig, Daniel; Leicht, Daniel; Schwaab, Gerhard; Havenith, Martina

doi:10.1063/1.4923214

Cited by 2 publications

(2 citation statements)

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“…A HENDI setup essentially similar to that use by Douberly's group has also been used by the group of Havenith. They have investigated allyl radical in particular, as well as its reactions and complexation in nanodroplets [269,270,271] COLD ATOMS AND MOLECULES In the aforementioned research of trapped molecular ions, the cooling of the sample is achieved by exposing the ions to cryogenically cooled helium atoms. This method is suitable for studies in astrochemistry, as it permits cooling down to ~4 K, which is close to the lowest temperature (~3 K) in interstellar space.…”

Section: Nanodroplet and Matrix Isolation Spectroscopiesmentioning

confidence: 99%

“…264,268 A HENDI setup essentially similar to that use by Douberly's group has also been used by the group of Havenith. They have investigated allyl radical in particular, as well as its reactions and complexation in nanodroplets [269][270][271] Cold atoms and molecules. In the aforementioned research of trapped molecular ions, the cooling of the sample is achieved by exposing the ions to cryogenically cooled helium atoms.…”

Section: Basic Researchmentioning

confidence: 99%

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Mid-infrared optical parametric oscillators and frequency combs for molecular spectroscopy

Vainio

Halonen

2016

Phys. Chem. Chem. Phys.

138

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Nonlinear optical frequency conversion is one of the most versatile methods to generate wavelength-tunable laser light in the mid-infrared region. This spectral region is particularly important for trace gas detection and other applications of molecular spectroscopy, because it accommodates the fundamental vibrational bands of several interesting molecules. In this article, we review the progress of the most significant nonlinear optics instruments for widely tunable, high-resolution mid-infrared spectroscopy: continuous-wave optical parametric oscillators and difference frequency generators. We extend our discussion to mid-infrared optical frequency combs, which are becoming increasingly important spectroscopic tools, owing to their capability of highly sensitive and selective parallel detection of several molecular species. To illustrate the potential and limitations of mid-infrared sources based on nonlinear optics, we also review typical uses of these instruments in both applied and fundamental spectroscopy.

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Section: Nanodroplet and Matrix Isolation Spectroscopiesmentioning

confidence: 99%

Section: Basic Researchmentioning

confidence: 99%

Mid-infrared optical parametric oscillators and frequency combs for molecular spectroscopy

Vainio

Halonen

2016

Phys. Chem. Chem. Phys.

138

View full text Add to dashboard Cite

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From the tunneling dimer to the onset of microsolvation: Infrared spectroscopy of allyl radical water aggregates in helium nanodroplets

Leicht

Kaufmann

Pal

et al. 2017

The Journal of Chemical Physics

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The infrared spectrum of allyl:water clusters embedded in helium nanodroplets was recorded. Allyl radicals were produced by flash vacuum pyrolysis and trapped in helium droplets. Deuterated water was added to the doped droplets, and the infrared spectrum of the radical water aggregates was recorded in the frequency range 2570-2820 cm. Several absorption bands are observed and assigned to 1:1 and 1:2 allyl:DO clusters, based on pressure dependent measurements and accompanying quantum chemical calculations. The analysis of the 1:1 cluster spectrum revealed a tunneling splitting as well as a combination band. For the 1:2 cluster, we observe a water dimer-like motif that is bound by one π-hydrogen bond to the allyl radical.

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Reassignment of ν2,3 IR band of the allyl radical in liquid helium nanodroplets

Cited by 2 publications

References 25 publications

Mid-infrared optical parametric oscillators and frequency combs for molecular spectroscopy

Mid-infrared optical parametric oscillators and frequency combs for molecular spectroscopy

From the tunneling dimer to the onset of microsolvation: Infrared spectroscopy of allyl radical water aggregates in helium nanodroplets

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