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The effects exerted by the substituents (H, Cl, OCH 3 , CN, NO 2 , benzo) in the 5-position of the indoline moiety on spectroscopic and kinetic properties of photochromic 5'-(benzothiazol-2-yl)-spiro[indoline-2,3'-[3Н]naphtho[2,1-b]pyrans], known as efficient chelators of transition metal ions, have been investigated by means of electronic absorption spectroscopic and DFT PBE0/6-311G**...
A new spironaphthopyran-based photochromic chelator was synthesised, and its photochromic, thermochromic and metallochromic properties were investigated. In the presence of Cd 2+ , Mn 2+ , Ni 2+ , Co 2+ , Zn 2+ and Cu 2+ ions in acetone solutions 1:1 and 1:2 metal:merocyanine complexes were formed simultaneously. Electron absorption spectroscopy (isomolar...
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