Bicyclic dioxetane bearing a (3-cyanoethenyl) phenyl group was found to be triggered by the Michael addition of a malonate anion with an accompanying emission of red light. 3-Adamantylidene-4-methoxy-1,2-dioxetanes bearing a 4-(3-hydroxy)phenyl substituted with a podand-type group, namely, 1,4,7-trioxaoctyl, 1,4,7,10-tetraoxaundecyl, or 1,4,7,10,13 -pentaoxa- tetradecyl were synthesized and their base-induced chemiluminescent decomposition was examined in an aqueous system. Optically active dioxetanes bearing a naphthylnaphthol moiety were also synthesized. They exhibited chemilumines" cence in molecular recognition.