Patent ID: 6891057

Claim:
A compound of the formula I: wherein X is selected from the group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted aralkyl groups of 1-20 carbon atoms, substituted or unsubstituted alkyl or aryl carboxyl groups having from 1-20 carbon atoms, tri(C 1 -C 8 alkyl)silyl groups, an SO 3 − group, glycosyl groups and phosphoryl groups of the formula —PO(OR′)(OR″) wherein R′ and R″ are independently selected from the group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted aryl and substituted or unsubstituted aralkyl groups of 1-20 carbon atoms, trialkylsilyl groups, alkali metal cations and alkaline earth cations, Z 1 and Z 2 are independently selected from the group consisting of O and S atoms, R 1 is an organic group having from 1 to 50 non-hydrogen atoms selected from the group consisting of C, N, O, S, P, Si and halogen atoms to produce the chemiluminescence and an electronic excited state compound having the formula A 1 A 2 C═O wherein one of A 1 and A 2 is an aryl group substituted with at least one group selected from the group consisting of amino, alkylamino, dialkylamino and OY′ where Y′ is hydrogen or an alkali metal ion, and the other of A 1 and A 2 is selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, heteroaryl, substituted heteroaryl, alkenyl, alkynyl, alkoxy, aryloxy, alkylamino, arylamino, alkylthio and arylthio.