支型长链均三嗪衍生物的合成与光谱性质

Synthesis and Spectroscopy Properties of Long-chain s-Triazine Derivatives with Side Chain

合成了三个较长共轭链的均三嗪类衍生物,分别为单支的L1、双支的L2、三支的L3,并与相应的三个较短共轭链的均三嗪类衍生物(S1,S2,S3)做了比较.实验结果表明,在弱极性溶剂中,随着三嗪环上侧链数目的增加或侧链的加长,吸收光谱和荧光光谱的峰位(λ_(max))都发生红移,吸收强度和荧光强度都显著增强.

Three long-chain s-triazine derivatives, the mono-branched L1, the di-brancbed L2 and the tri-branched L3, have been synthesized. The linear absorption and emission spectra （2max） of the long-chain compounds （L1, L2, and L3） show regular red-shift in comparison with those of short-chain compounds （S 1, S2, and S3）, and the linear spectra of both long-chain and short-chain series also show systematic red-shift with the increase of the branch number. Meanwhile, the spectral intensities were significantly increased with the increase of the branch length or the branch number.