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Volumn 138, Issue 9, 2013, Pages

Debye relaxation and 250 K anomaly in glass forming monohydroxy alcohols

Author keywords

[No Author keywords available]

Indexed keywords

ANOMALOUS BEHAVIOR; CHANGE OF BEHAVIOR; DIELECTRIC LOSS SPECTRA; EXPERIMENTAL METHODS; HYDROGEN BOND COOPERATIVITY; HYDROGEN-BONDED LIQUIDS; MONOHYDROXY ALCOHOLS; NUCLEAR MAGNETIC RESONANCE STUDIES;

EID: 84874878966     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.4793469     Document Type: Article
Times cited : (64)

References (63)
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    • For 3,7D1O and for 4M3H, the δ-band wavelength changes its behavior near 270 K Fig. To check whether this is caused by water contamination, we dried 3,7D1O with a molecular sieve of 4 Å over night. This reduced the water content according to a Karl Fischer titration from ∼400 to 20 ppm. We find practically the same peak wavelengths and absorbances for the δ-band in the treated (open symbols in Fig. and Fig.) and in the untreated sample
    • For 3,7D1O and for 4M3H, the δ-band wavelength changes its behavior near 270 K Fig. To check whether this is caused by water contamination, we dried 3,7D1O with a molecular sieve of 4 Å over night. This reduced the water content according to a Karl Fischer titration from ∼400 to 20 ppm. We find practically the same peak wavelengths and absorbances for the δ-band in the treated (open symbols in Fig. and Fig.) and in the untreated sample.
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    • A wavelength shift can also arise if the transition dipole moment associated with a given vibrational state is temperature dependent. From a comparison of fundamental and overtone modes, it can be deduced that the anharmonicity constant does not vary significantly upon temperature change, at least for 1-octanol, see Ref.
    • A wavelength shift can also arise if the transition dipole moment associated with a given vibrational state is temperature dependent. From a comparison of fundamental and overtone modes, it can be deduced that the anharmonicity constant does not vary significantly upon temperature change, at least for 1-octanol, see Ref..
  • 48
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    • This argument assumes that the CH combination band, onto which the α- and the β-contributions are superimposed, displays negligible temperature dependence, which seems to be fulfilled, see Refs. and
    • This argument assumes that the CH combination band, onto which the α- and the β-contributions are superimposed, displays negligible temperature dependence, which seems to be fulfilled, see Refs. and.
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    • We assume that branches leading to additional proton accepting end groups are not present, in accord with results of molecular dynamics simulations that find only a tiny fraction (<0.1%) of bifurcated hydrogen bonds, see, 10.1021/jp109215q
    • We assume that branches leading to additional proton accepting end groups are not present, in accord with results of molecular dynamics simulations that find only a tiny fraction (<0.1%) of bifurcated hydrogen bonds, see T. Pylkkänen, J. Lehtola, M. Hakala, A. Sakko, G. Monaco, S. Huotari, and K. Hämäläinen, J. Phys. Chem. 114, 13076 (2010). 10.1021/jp109215q
    • (2010) J. Phys. Chem. , vol.114 , pp. 13076
    • Pylkkänen, T.1    Lehtola, J.2    Hakala, M.3    Sakko, A.4    Monaco, G.5    Huotari, S.6    Hämäläinen, K.7
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.