Time Domain Terahertz Spectroscopy for investigating the dielectric relaxation dynamics of water in model membranes (Contributo in atti di convegno)

Type
Label
  • Time Domain Terahertz Spectroscopy for investigating the dielectric relaxation dynamics of water in model membranes (Contributo in atti di convegno) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Paparo, D.; Tielrooij, K. J.; Piatkowski, L.; Bakker, H. J.; Bonn, M. (2010)
    Time Domain Terahertz Spectroscopy for investigating the dielectric relaxation dynamics of water in model membranes
    in 35TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ 2010), Rome, 2010
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Paparo, D.; Tielrooij, K. J.; Piatkowski, L.; Bakker, H. J.; Bonn, M. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • ISI Web of Science (WoS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR SPIN (literal)
Titolo
  • Time Domain Terahertz Spectroscopy for investigating the dielectric relaxation dynamics of water in model membranes (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-1-4244-6657-3 (literal)
Abstract
  • We have investigated hydrated model membranes, formed by stacked bilayers of unsaturated lipids, by means of terahertz time-domain and infrared spectroscopy. Terahertz spectroscopy enables the investigation of water dynamics, owing to its sensitivity to dielectric relaxation processes associated with water reorientation. By controlling the number of water molecules per lipid molecule in the system, we elucidate how the interplay between the model membrane and water molecules results in different water dynamics. For decreasing hydration levels, we observe the appearance of new types of water dynamics: the collective bulklike dynamics become less pronounced, whereas an increased amount of both very slowly reorienting (i.e., irrotational) and very rapidly reorienting (i.e., fast) water molecules appear. (literal)
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