Synthesis, photochromic behaviour and light-controlled complexation of 3,3-diphenyl-3H-benzo[f]chromenes containing a dimethylamino group or an aza-15-crown-5 ether unit
Abstract
Synthesis of 3,3-diphenyl-3H-benzo[f]chromenes containing an aza-15-crown-5-ether unit or a dimethylamino group and spectrokinetic study of light-controlled complexation of these compounds with Ca2+ in