添加剂对罗丹明B和吖啶黄在SDS溶液中能量转移的影响

罗丹明B(RB)和吖啶黄(AY)在十二烷基硫酸钠(SDS)水溶液中浓度小于临界胶团浓度时,就能发生有效的能量转移,能够反映出SDS形成预胶团的聚集状况。非离子表面活性剂Tween 60,使两种染料分子之间的能量转移受到抑制,分析表明,加入Tween 60后聚集体变小,由于Tween 60的极性头基较大,所以其预胶团结构较紧密,不利于能量转移的发生。在溶液中加入无机盐NaCl和Na2SO4后,虽然聚集体变小,但体系中染料分子仍可以发生有效的能量转移,表明体系中预胶团内部结构较疏松,而且盐的浓度越高,能量转移效率越低,加入无机盐种类不同,能量转移效率也不同,说明无机盐的种类对聚集体的形态有一定影响。

Effect of Additives on the Energy Transfer between Rhodamide B and Acriflavine Yellow in SDS Aqueous Solution

An effective energy transfer can occur between Rhodamide B(RB) and acriflavine(AY) in the solution of sodium dodecyl sulfate(SDS) while the concentration of which is below the critical micellar concentration.This transfer reflects that aggregation of surfactant forms micelles in the aqueous solution.Adding nonionic surfactant Tween 60,the energy transfer between the two dyes is inhibited,which indicates that the aggregation became smaller after adding Tween 60.It is because that the polar group size of Twee...