Study on State of Terbium Ion in Liposome by One order Derivative Fluorescence Quenching Method

摘要

The state of Tb 3+ is investigated in liposome. When the concentration of PC is below CMC(critical micell concentration), most of Tb 3+ is associated with PC, the binding constant is about 3.35×10 3 L/mol. When the concentration of PC is beyond CMC, most of Tb 3+ is dimerized, the dimerization constant is about 3.92×10 4 L/mol. In PC CH H 2O system, the binding constant of Tb 3+ CH complex 2.93×10 4 L/mol is obtained.