摘要
The aggregation of dansyl chloride (DNS-Cl) in acetone has been studied indetail by steady-state fluorescence techniques. It has been demonstrated that DNS-Cl is stable inacetone during purification and aggregation study processes. The aggregates are not solvolyzed inacetone, and do not take part in any chemical reactions either. It has been found that DNS-Cl tendsto aggregate even when its concentration is much lower than its solubility in acetone. Theaggregation is reversible, and both the aggregation and the deaggregation are very slow processes.Introduction of SDS has a positive effect upon the formation and stabilization of the aggregates.
The aggregation of dansyl chloride (DNS-Cl) in acetone has been studied indetail by steady-state fluorescence techniques. It has been demonstrated that DNS-Cl is stable inacetone during purification and aggregation study processes. The aggregates are not solvolyzed inacetone, and do not take part in any chemical reactions either. It has been found that DNS-Cl tendsto aggregate even when its concentration is much lower than its solubility in acetone. Theaggregation is reversible, and both the aggregation and the deaggregation are very slow processes.Introduction of SDS has a positive effect upon the formation and stabilization of the aggregates.
基金
theNationalNaturalScienceFoundationofChina (Nos.2 99730 2 4and 2 0 1730 35 ) ,theUniversityKeyTeacher’sFoundingProgramoftheMinistryofEducationofChina (No .30 0 6 )andtheNaturalScienceFoundationofShaanxiProvince (No .99H13)
