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Stereodynamics at the gas-liquid interface: orientation and alignment of CO2 scattered from perfluorinated liquid surfaces

, : Stereodynamics at the gas-liquid interface: orientation and alignment of CO2 scattered from perfluorinated liquid surfaces. Journal of Physical Chemistry. A 114(3): 1398-1410

Rotational orientation/alignment dynamics of CO(2) scattered from a perfluorinated polyether (PFPE) liquid surface has been investigated via direct absorption experimental studies and theoretical molecular dynamics (MD) simulations. Experimentally, polarization modulation of a single mode diode laser is combined with lock-in detection to measure circular/linear IR polarizance due to CO(2) scattering from the surface at theta(inc) = 60 degrees and E(inc) = 10.6(8) kcal/mol and probed over a series of final scattering angles. The differential absorption intensities are related through Fano-Macek theory to the three lowest multipole moments (A(0), A(2+), and O(1-)) which describe collisionally induced orientation and alignment at the liquid surface. The total scattering population reflects both trapping-desorption (TD) and impulsive scattering (IS) components, with a strong positive anisotropy in the M(J) distribution that indicates preferential CO(2) scattering from the surface with a forward (i.e., "topspin") sense of end-over-end tumbling. Theoretical trajectory simulations provide 3D CO(2) flux and J state distributions scattering from fluorinated self-assembled monolayers (F-SAMs) and are compared with experimental results as a function of final rotational state. Specifically, trends in the theoretical orientation/alignment moments are in remarkable agreement over the full range of J states but with values consistently overpredicted by nearly 2-fold, which may reflect a higher level of local ordering for F-SAMS vs a gas-PFPE liquid interface.


PMID: 20039715

DOI: 10.1021/jp907022u

Other references

Scott, H.L.; Dodd, P.R., 1999: Characteristics of neuronal glutamate transport in Alzheimer disease. Society for Neuroscience Abstracts 25(1-2): 2121

Bustnes J.O.; Erikstad K.E., 1991: The role of failed nesters and brood abandoning females in the creching system of the common eider somateria mollissima. In Common Eiders, females other than the mother often protect young from predators. This study was designed to determine if failed nesters and females which loose their young shortly after hatching (brood abandoners) participate in such rearing ac...

Cornejo J.; Ramirez Oterino A.; Hermosin M.C., 1990: Effect of grinding in sepiolite dissolution. Boletin Sociedad Espanola de Mineralogia 13(1): 38-39

Warburg, O.; Krebs, H.A., 1927: Loosely bound copper and iron in the blood serum. Biochem Zeitschr 190(1/3): 143-149

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Anonymous, 1959: Symposium on Diagnostic Enzymology. KING, E. J. (849-860), introductory remarks (over 150 references); BODANSKY, 0. (861-874), diagnostic applications of enzymes in medicine (45 references); GUTMAN, A. B. (875-901), serum alkaline phosphatase activity in diseases of the skeletal and...

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Li, X.; Wang, L.; Li, Y.; Bai, L.; Xue, M., 2011: Acute and subacute toxicological evaluation of scutellarin in rodents. Acute and subacute investigations were carried out to evaluate the safety of scutellarin, an active flavone glycoside that has been used to treating cardiocerebral vascular diseases and cerebral infarction in rodents. For the acute study, scutella...

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