Imaging Science and Photochemistry ›› 1992, Vol. 10 ›› Issue (2): 185-188.DOI: 10.7517/j.issn.1674-0475.1992.02.185

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SYNTHESIS OF 5-NITRO-SPIRO-INDOLINO-NAPHTHOXAZINE AND ITS PHOTOCHROMISM

WU WEI, WANG YONG-MIN, CHEN HONG-FENG, ZHANG JIAN-CHENG   

  1. Institute of Photographic Chemistry, Academic Sinica, Beijing 100101, P.R. China
  • Received:1991-04-05 Revised:1991-08-20 Online:1992-05-20 Published:1992-05-20

Abstract: A new photochromic compound-5-nitro-spiro-indolino-naphthoxazine(Ⅱ) was synthesized. Some photochromic properties of (Ⅱ) and spiro-indolino-naphthoxazine were compared in polar and nonpolar solvents. An unexpected hypsochromic effect of the absorption maximum was observed by the substitution of nitro group in compound(Ⅱ).

Key words: spiroxazine, synthesis, photochromism