Mauerer, M. and Penzkofer, Alfons and Zweck, Josef (1998) Dimerization, J-aggregation and J-disaggregation dynamics of indocyanine green in heavy water. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 47 (1). pp. 68-73. ISSN 1011-1344, 1873-2682
Full text not available from this repository.Abstract
The dimerization constant of freshly prepared samples of indocyanine green sodium iodide in D2O is determined by an analysis of the concentration-dependent absorption behaviour. At high concentrations J-aggregates are formed in due time by heat treatment. The activation energy of molecule attachment to J-aggregates is determined by analysing the temperature dependence of the rate of J-aggregate growth. The activation energy of molecule detachment from J-aggregates is deduced from measurements of the temperature-dependent rate of J-aggregate absorption decrease after strong dilution. Compared to indocyanine green sodium iodide in water, the dimerization constant is reduced, and the rates of J-aggregate formation at high concentration and of molecule detachment from J-aggregates at low concentration are slowed down. (C) 1998 Elsevier Science S.A. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ABSORPTION; dimerization; dimerization constant; J-aggregates; indocyanine green; solvent isotope effect; deuterium oxide; heavy water; activation energy of aggregation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Chair Professor Back > Group Josef Zweck Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Feb 2023 05:35 |
| Last Modified: | 23 Feb 2023 05:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49395 |
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