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Probing the hydroge...
Probing the hydrogen-bond network of water via time-resolved soft X-ray spectroscopy
- Artikel/kapitelEngelska2009
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Royal Society of Chemistry (RSC),2009
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LIBRIS-ID:oai:DiVA.org:su-60081
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-60081URI
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https://doi.org/10.1039/b822210jDOI
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Språk:engelska
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Sammanfattning på:engelska
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authorCount :9
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We report time-resolved studies of hydrogen bonding in liquid H2O, in response to direct excitation of the O-H stretch mode at 3 mm, probed via soft X-ray absorption spectroscopy at the oxygen K-edge. This approach employs a newly developed nanofluidic cell for transient soft X-ray spectroscopy in the liquid phase. Distinct changes in the near-edge spectral region (XANES) are observed, and are indicative of a transient temperature rise of 10 K following transient laser excitation and rapid thermalization of vibrational energy. The rapid heating occurs at constant volume and the associated increase in internal pressure, estimated to be 8 MPa, is manifested by distinct spectral changes that differ from those induced by temperature alone. We conclude that the near-edge spectral shape of the oxygen K-edge is a sensitive probe of internal pressure, opening new possibilities for testing the validity of water models and providing new insight into the nature of hydrogen bonding in water.
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Wen, Haidan
(författare)
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Nordlund, Dennis
(författare)
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Szilagyi, Erzsi
(författare)
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Daranciang, Dan
(författare)
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Miller, Timothy A.
(författare)
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Nilsson, AndersStockholms universitet,Fysikum(Swepub:su)andersn
(författare)
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Schoenlein, Robert W.
(författare)
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Lindenberg, Aaron M.
(författare)
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Stockholms universitetFysikum
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Ingår i:Physical Chemistry, Chemical Physics - PCCP: Royal Society of Chemistry (RSC)11:20, s. 3951-39571463-90761463-9084
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