8′-取代吲哚螺噁嗪光致变色化合物的合成及光谱性质

Synthesis and spectrometric properties of 8′-substituted spironaphthooxazine photochromic compounds

通过在螺噁嗪结构中的萘环8′-位上引入不同的取代基,合成了三种螺噁嗪光致变色化合物;对三种产物的光谱性质进行了对比研究,并考察了其光照褪色速率和抗疲劳性能.结果表明:改变8′-位取代基,合成化合物的闭环吸收峰的位置几乎不受影响,但开环吸收峰发生显著变化,随着取代基极性增加明显红移.增加溶剂的极性,可使同一化合物的开环吸收峰红移.

Different substituent groups were introduced onto the 8＇-position of the naphthalene ring in spirooxazine to synthesize three kinds of spironaphthooxazine photochromic compounds. The spectrometric properties of three products were comparatively examined, and their rate of decoloration and fatigue resistance were also investigated. Results show that the influence of the polar 8＇-substituent group on the ring closing absorption peak can be ignored, but it is substantial to the position of the ring opening absorption peak. Besides, obvious red shift of the ring opening absorption peak can be observed with the increase of the polarity of the substituent group, and increasing polarity of the solvents also leads to red shift of the ring opening absorption peak.