十八烷基取代吲哚啉螺吡喃衍生物的合成及光谱性质

本文合成了十种新的十八烷基取代的吲哚螺吡喃衍生物,拟进一步研究这类化合物在LB膜中的光致变色性质.

Synthesis and spectral properties of some new long chain alkyl substituted spiropyranindolines

Ten new spiropyranindolines I (R1 = H, Me; R2, R3 = H, Br, MeO, NO2) and II (R1 = H, Me) have been synthesized. The m.p., elemental anal. and 1H NMR spectra were measured to identify the structure of these new compounds All compounds show photochromic properties after irradiation with UV light. Based on UV-visible spectral data and the influence of solvent polarity on spectra of spiropyran, the effect of substituent on spectral properties of ring-opening form were discussed and the zwitterionic structure of the colored form was proposed.