Interionic Structure of Ion Pairs.  Hydration Effects in    Molecular Electronic Spectra of Laser Dyes.
{'Code': '03090003', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'CHE', 'LongName': 'Division Of Chemistry'}}
{'SignBlockName': 'Wendy L. Richard', 'PO_EMAI': None, 'PO_PHON': None}
This grant in the Organic and Macromolecular Chemistry Program                  supports research by Prof. Ernest Grunwald, which aims at increasing            chemical understanding of two important aspects of chemical structure           and reactivity in solution:  (1) the interionic structure of ion                pairs, as analyzed by their electric dipole moments; and (2)                    hydrophobic interactions and solvent structure in solution, via                 spectroscopic studies of laser dyes.  Both areas of research, though            experimentally unrelated, are important for advancing understanding of          dynamic chemical phenomena in ionic solutions.                                                                                                                  The ion-pair project is a continuation of research supported                    heretofore by Foundation grant CHE-8310130, under which steady                  progress was made toward creating an experimental and theoretical base          of deduction of interionic structures.  The principal methodology to            be employed in the current work is analysis of electric dipole moments          of modified anilinium sulfonates with strategically located                     substituent groups.  The second project will use the comparison of              medium effects in absorption and emission spectra of laser dyes at              high pressure (up to 7 kbar) to sort out the contribution of hydration          energies to transition energies.  The interpretation of the results             will provide critical information on the structure of the water                 network in aqueous solutions.
{'FirstName': 'Ernest', 'LastName': 'Grunwald', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Ernest Grunwald', 'EmailAddress': None, 'NSF_ID': '000456791', 'StartDate': '04/15/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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{'Code': '1942', 'Text': 'UNIMOLECULAR PROCESSES'}
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