THE ROLE OF SUPERHEATED WATER ON SHIELDING AND MEDIATING HYDROGEN BONDING IN (POLY)AMIDE CRYSTALLIZATION
Introduction During evolution water has adopted an active role in self-assembly phenomena such as protein folding, protein-protein recognition and protein-DNA binding. Here, van der Waals interactions, hydrogen bonding, electrostatic and hydrophobic interactions are crucial for sequence specific DNA recognition 1. However, prior to the influence of the direct interactions, water molecules indirectly mediate the recognition and specificity, acting as a guide mapping unfavorable electrostatic forces and hydrogen bonding. Recently we have shown that the disruption of the percolating hydrogen bonding network between water molecules favors the dissolution of polyamides (PA) in the superheated state of water 2,3. On cooling crystallization occurs above the boiling point of water, where a continuous electron exchange between water molecules and the amide moieties leads to the entrapment of water molecules within the crystal lattice 3-5. In this presentation the role of such water molecules and the implications on hydrogen bonding are investigated in amide-based model crystals, representing the crystalline domains in PAs.
Jules A.W.Harings Esther Vinken Otto van Asselen Robert Graf Sanjay Rastogi
Eindhoven University of Technology,P.O.Box 513,5600 MB Eindhoven,The Netherlands Max Planck Institute for Polymer Research,Ackermannweg 10,55128 Mainz,Germany Eindhoven University of Technology,P.O.Box 513,5600 MB Eindhoven,The Netherlands Max Planck Institut
国际会议
International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)
厦门
英文
59-60
2008-06-08（万方平台首次上网日期，不代表论文的发表时间）