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Influence of acid on photochromic properties of 5-nitro-substituted indolinospiropyrans

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusion

In the presence of organic acids, the photochromic properties of 1,3,3-trlmethy1-5-nitro-6′-methoxyspiro(indoline-2,2′-[2H-1]-benzopyran) are changing. A hypsochromic shift of the absorption band of the colored form and a retardation of the thermal decoloration reaction are observed due to the formation of hydrogen bond complexes.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1019–1022, May, 1988.

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Arsenov, V.D., Marevtsev, V.S., Komlev, I.V. et al. Influence of acid on photochromic properties of 5-nitro-substituted indolinospiropyrans. Russ Chem Bull 37, 889–891 (1988). https://doi.org/10.1007/BF00957053

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  • DOI: https://doi.org/10.1007/BF00957053

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