Solvation statics and dynamics in electrolyte solutions. The ion-solvent exchange model

被引:12
作者
Argaman, R [1 ]
Molotsky, T [1 ]
Huppert, D [1 ]
机构
[1] Tel Aviv Univ, Sch Chem, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Ramat Aviv, Israel
关键词
D O I
10.1021/jp000917k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have studied the solvation energetics and dynamics of coumarin 153 in various electrolyte solutions of polar organic solvents. We used a model of two distinct solvates to explain the experimental data. The first distinct solvate was a coumarin dye molecule surrounded by n solvent molecules in the first solvation shell. In the second distinct solvate, one of the surrounding solvent molecules was replaced by a ration. Upon photoexcitation of the coumarin dye, an ion-solvent exchange reaction occurred, which was followed by time-resolved fluorescence measurements. The model was successfully applied to coumarin 153 dye in all the solvents used, as well as in a wide range of electrolyte concentrations.
引用
收藏
页码:7934 / 7943
页数:10
相关论文
共 29 条
  • [1] Dynamics in ionic solutions - Revisited
    Argaman, R
    Huppert, D
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (06) : 1338 - 1348
  • [2] SOLVATION DYNAMICS IN MOLTEN-SALTS
    BART, E
    MELTSIN, A
    HUPPERT, D
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (42) : 10819 - 10823
  • [3] DYNAMIC SALT EFFECT ON EXCITED LARGE DIPOLE SOLVATION
    BART, E
    HUPPERT, D
    [J]. CHEMICAL PHYSICS LETTERS, 1992, 195 (01) : 37 - 44
  • [4] Bockris J.O., 1970, Modern Electrochemistry, V1, DOI [10.1007/978-1-4615-8600-5, DOI 10.1007/978-1-4615-8600-5]
  • [5] ION-RESPONSIVE FLUORESCENT COMPOUNDS .4. EFFECT OF CATION BINDING ON THE PHOTOPHYSICAL PROPERTIES OF A COUMARIN LINKED TO MONOAZA-CROWN AND DIAZA-CROWN ETHERS
    BOURSON, J
    POUGET, J
    VALEUR, B
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (17) : 4552 - 4557
  • [6] Amide derivatives of DMABN: A new class of dual fluorescent compounds
    Braun, D
    Rettig, W
    Delmond, S
    Letard, JF
    Lapouyade, R
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (37) : 6836 - 6841
  • [7] FLUORESCENCE STUDIES OF SOLVATION AND SOLVATION DYNAMICS IN IONIC-SOLUTIONS
    CHAPMAN, CF
    MARONCELLI, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (23) : 9095 - 9114
  • [8] EIGEN M, 1962, Z ELEKTROCHEM, V66, P93
  • [9] FLEMING GR, 1996, ANNU REV PHYS CHEM, V47, P1098
  • [10] DYNAMIC SOLVENT EFFECTS ON ELECTRON-TRANSFER REACTIONS
    HEITELE, H
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1993, 32 (03) : 359 - 377