C_（60）化学修饰的PNVC材料的UV－VIS谱研究

本实验采用金属有机化学方法成功地将富勒烯分子引入到ＰＮＶＣ侧链形成ＣＢＰ（ＣｈａｒｍＢｒａｃｅｌｅｔＰｏｌｙｍｅｒ）型共聚功能材料，研究了其ＵＶ－ＶＩｓ谱行为。结果表明，Ｃ_（６０）或Ｃ_（６０）／Ｃ_（７０）混合物化学修饰的产物其紫外可见谱明显向长波方向移动，谱峰范围由２８０ｎｍ扩展至８７０ｎｍ。Ｃ_（６０）含量增加，红移程度增大，在可见区域的吸收程度亦增加。产物主要存在５个特征峰，分别位于２１５ｎｍ、２６５ｎｍ、２９８ｎｍ、３３５ｎｍ、３４５ｎｍ处，其中２１５ｎｍ峰为Ｃ_（６０）仅存的特征峰。最后讨论了不同合成条件与产物硝化处理对其ＵＶ－ＶＩＳ谱行为的影响。

UV-VIS Study of C_(60)-Chemically Modified Poly(N-vinylcarbazole)

The UV-VIS spectra of C_(60)-chemically modified Poly(N-vinylcarbazole)tends to move to the longer wavelangth in compared with that of the PNVC,and the peak range also extended from about 280 nm to 870 nm.The absorbance in the visible region is essentially determined by the fullerene level in the copolymer,i.e.increasing the fullerene level should further enhance the absorption degree at longer wavelengths.The main peaks of the copolymer occur at 215nm,265nm,298nm,335nm and 345nm.The copolymer and C_(60) have a common peak at 215 nm.The effect of synthsis conditions and the nitration of the copolymer on the UV-VIS spectra is also discussed.