羧基为核收敛的多醚树枝状大分子的红外与拉曼光谱分析

Infrared and Raman Spectra Analysis of Carboxyl-Cored Convergent Polyether Dendrimers

根据文献合成了第一、第二和第三代羧基为核收敛的多醚树枝状大分子(缩写为G1、G2和G3)。利用振动光谱数据,结合X-衍射结构分析,从G1的结构推想出G2和G3的可能结构。以2,5二甲基苯基醚作为模型分子,把复杂分子拆成组成结构进行光谱分析,从而对产物G1、G2和G3的谱带作了初步归属。

The 1^st, 2^nd, and 3^rd generations of carboxyl-cored convergent polyether dendrimers （denoted as G1 , G2, and G3, respectively） were synthesized following the procedure reported in literature. From the analysis of vibrational spectra of G1 , G2, and G3and the single crystal X-ray structure of G1 , the structures of G2 and G3 were supposed. With 2,5 bimethyl benzyl aether as the model molecule of HOOC- -R -R （R = -O-CH2- ） , the complex molecules were split into their constituent parts, and then their Infrared and Raman spectra were discussed. Based on this, the Infrared and Raman spectra of G1 , G2, and G3 were assigned.