Effect of metal cations on the photochromic properties of spironaphthoxazines conjugated with aza-15 (18)-crown-5 (6) ethers

…, AV Feofanov, IS Alaverdian, VA Lokshin…

Index: Fedorova, Olga A.; Strokach, Yuri P.; Gromov, Sergey P.; Koshkin, Alexander V.; Valova, Tatjana M.; Alfimov, Michael V.; Feofanov, Alexei V.; Alaverdian, Iouri S.; Lokshin, Vladimir A.; Samat, Andre; Guglielmetti, Robert; Girling, Reuben B.; Moore, John N.; Hester, Ronald E. New Journal of Chemistry, 2002 , vol. 26, # 9 p. 1137 - 1145

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Citation Number: 28

Abstract

Spironaphthoxazines conjugated with aza-15 (18)-crown-5 (6)-ether moieties at the 6′- position of the naphthalene fragment (Crown-containing Spironaphthoxazines, CSN) were synthesised and studied for the first time. The addition of Li+ and alkaline earth (Mg2+, Ca2+, Sr2+ and Ba2+) metal cations to CSN solutions results in a hypsochromic shift of the UV absorption band of the spiro form and a bathochromic shift of the absorption band of ...