Insights into Phases of Liquid Water from Study of Its Unusual Glass-Forming Properties

@article{citeulike:2926571, abstract = {The vitrification of pure water is compared with that of molecular solutions rich in water, and gross differences are noted. Thermodynamic reasoning and direct observations on noncrystallizing nanoconfined water indicate that the glass transition in ambient-pressure water is qualitatively distinct from that found in the usual molecular liquids. It belongs instead to the order-disorder class of transition seen in molecular and ionic crystalline materials. The distinctive "folding funnel" energy landscape for this type of system explains the extreme weakness of the glass transition of water as well as the consequent confusion that has characterized its scientific history; it also explains the very small excess entropy at the glass transition temperature. The relation of confined water behavior to that of bulk is discussed, and the "fragile-to-strong" transition for supercooled water is interpreted by adding a "critical point-free" scenario to the two competing scenarios for understanding supercooled bulk water. 10.1126/science.1131939}, author = {Angell, Austen C. }, citeulike-article-id = {2926571}, doi = {http://dx.doi.org/10.1126/science.1131939}, journal = {Science}, keywords = {glasses}, month = {February}, number = {5863}, pages = {582--587}, posted-at = {2008-06-25 19:11:18}, priority = {2}, title = {Insights into Phases of Liquid Water from Study of Its Unusual Glass-Forming Properties}, url = {http://dx.doi.org/10.1126/science.1131939}, volume = {319}, year = {2008} }

TY - JOUR ID - citeulike:2926571 L3 - citeulike-article-id:2926571 TI - Insights into Phases of Liquid Water from Study of Its Unusual Glass-Forming Properties JF - Science VL - 319 IS - 5863 SP - 582 EP - 587 N2 - The vitrification of pure water is compared with that of molecular solutions rich in water, and gross differences are noted. Thermodynamic reasoning and direct observations on noncrystallizing nanoconfined water indicate that the glass transition in ambient-pressure water is qualitatively distinct from that found in the usual molecular liquids. It belongs instead to the order-disorder class of transition seen in molecular and ionic crystalline materials. The distinctive "folding funnel" energy landscape for this type of system explains the extreme weakness of the glass transition of water as well as the consequent confusion that has characterized its scientific history; it also explains the very small excess entropy at the glass transition temperature. The relation of confined water behavior to that of bulk is discussed, and the "fragile-to-strong" transition for supercooled water is interpreted by adding a "critical point-free" scenario to the two competing scenarios for understanding supercooled bulk water. 10.1126/science.1131939 KW - glasses AU - Angell, Austen PY - 2008/02/01/ UR - http://dx.doi.org/10.1126/science.1131939 ER -