Pressure effects on aminonaphthalene dye fluorescence in H2O and D2O |
| |
| Authors: | C J Mastrangelo H W Offen |
| |
| Institution: | (1) Department of Chemistry and Marine Science Institute, University of California, 93106 Santa Barbara, California |
| |
| Abstract: | The pressure dependence of excited-state proton transfer equilibria has been examined for aqueous solutions of several substituted napthalene dyes, in particular 1-dimethylaminonaphthalene-5-sulfonic acid (DANS). The pressure-induced shift in equilibrium is characterized by volume changes spanning the range  V
*=–18 cm3 mole–1 to V
*=+4 cm3-mole–1. A deuterium oxide solvent isotope effect is evident in the pressure response of DANS, leading to a 35% smaller  V* in D2O relative to H2O. |
| |
| Keywords: | High pressures fluorescence aqueous solution dyes excited-state proton transfer solvent isotope effects |
| 本文献已被 SpringerLink 等数据库收录！ |
