| Autor: |
Hamashima, Toru, Mizuse, Kenta, Fujii, Asuka |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
The journal of physical chemistry. A. 115(5) |
| ISSN: |
1520-5215 |
| Popis: |
We report infrared spectra of phenol-(H(2)O)(n) (∼20 ≤ n ≤ ∼50) in the OH stretching vibrational region. Phenol-(H(2)O)(n) forms essentially the same hydrogen bond (H-bond) network as that of the neat water cluster, (H(2)O)(n+1). The phenyl group enables us to apply the scheme of infrared-ultraviolet double resonance spectroscopy combined with mass spectrometry, achieving the moderate size selectivity (0 ≤ Δn ≤ ∼6). The observed spectra show clear decrease of the free OH stretch band intensity relative to that of the H-bonded OH band with increasing cluster size n. This indicates increase of the relative weight of four-coordinated water sites, which have no free OH. Corresponding to the suppression of the free OH band, the absorption peak of the H-bonded OH stretch band rises at ∼3350 cm(-1). This spectral change is interpreted in terms of a signature of four-coordinated water sites in the clusters. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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