以改进的荧光非辐射能量转移法研究高分子共混物  

A Study on Polymer Blends via Modified Nonradiative Energy Transfer Fluorescence

作　　者：邱星屏[1] 江明[1] 

机构地区：[1]复旦大学高分子科学系,上海200433

出　　处：《高等学校化学学报》1993年第11期1625-1626,共2页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：荧光非辐射能量转移(NRET)法可灵敏地反映出在几纳米尺度上分子相互作用的信息。这一性质已广泛用于高分子共混物相容性的研究。通常的NRET方法是通过测定两种聚合物链的相互接近的程度得到有关相容性的信息。但相区的大小与形态都会影响能量转移的效率,且需对共混物中的组成聚合物分别以荧光能量给体和受体进行标记,与此不同。In this paper, a modified nonradiative energy transfer method (M-NRET) was used for the study on miscibility of polymer blend. Differing from the conventional NRET, it takes the advantage of labeling one polymer component with both fluorescence donor and acceptor instead of labeling all the components of the blend. This method has been found to be more sensitive to the degree of chain interpenetration in the miscible blends at the molecular level and especially, to be effective to monitor the miscibility-complexation transition of the blends.

关 键 词：能量转移 相容性 高分子共混物 

分 类 号：O63[理学—高分子化学]