【摘要】 紫杉醇（Ｔａｘｏｌ）等天然大分子加入基体辅助激光解吸电离飞行时间质谱（ＭＡＬＤＩ－ＴＯＦ－ＭＳ）的基体溶液中，基体的吸收光谱没有峰移，但某些吸收带的吸光度却随大分子的大小，溶剂体系的改变而有所变化．其中Ｔａｘｏｌ对基体对硝基苯胺（ＰＮＡ）的吸收光谱影响最大，Δε达６．４４×１０－４Ｌｍｏｌ－１ｃｍ－１．表明基体的能量状态没有改变，其跃迁偶极矩却发生了变化．这一现象从溶液中分子的簇集倾向及溶剂笼效应得到了解释．更多还原

【Abstract】 The UV Visible and fluorescent spectra of some matrix solutions with natural macromolecules had no shift,while absouption of some bands in these spectra increased or decreased along with the size of the macromolecule,and the change of solvent system.It was preliminaryly intergreted with the aggregating tendency of matrixes and solvent cage effect in the solution.更多还原