Solvation dynamics and proton transfer in supramolecular assemblies.
Water molecules confined in a supramolecular assembly control reactivity and dynamics of biological systems in a unique way. In a confined system, water molecules display an ultraslow component of solvation which is slower than that in bulk water by 2-4 orders of magnitude. The ultraslow component arises mainly from the disruption of the hydrogen-bond network of water and the binding of water molecules to a macromolecule. The ultraslow component of solvation markedly retards polar reactions. Many examples of slow dynamics in complex systems, and their implications in biological and natural processes are discussed.
Bhattacharyya
Kankan
K
Department of Physical Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India.
D006860:Hydrogen Bonding; D007700:Kinetics; D046911:Macromolecular Substances; D011522:Protons; D012997:Solvents / Q000737:chemistry; D014867:Water / Q000737:chemistry*
D046911:Macromolecular Substances; D011522:Protons; D012997:Solvents; D014867:Water