CHLORINATED BIS(PHENYLETHYNYL)ANTHRACENES AS FLUORESCERS IN CHEMILUMINESCENT SYSTEMS

摘要

1425770 Chemiluminescence AMERICAN CYANAMID CO 4 May 1973 [12 June 1972] 21421/73 Heading C4S Chemiluminescent reactants which react with a hydroperoxide to give chemiluminescent light comprises (1) an oxalic acid ester of formula R 1 OOC-COOR 2 in which R 1 and R 2 each represents an aliphatic or an aromatic group; (2) a fluorescer comprising a bis-(phenylethynyl)- anthracene selected from 1,5-dichloro-9,10- bis-(phenylethynyl)anthracene, 1,8-dichloro- 9,10 - bis - (phenylethynyl)anthracene, 2,3- dichloro - 9,10 - bis - (phenylethynyl)anthracene, 1 - chloro - 9,10 - bis - (phenylethynyl)anthracene, 2 - chloro - 9,10 - bis - (phenylethynyl)- anthracene and 2-methyl-9,10-bis-(phenylethynyl)anthracene and optionally (3) a diluent. R 1 and R 2 may be, for example, alkyl groups which are optionally substituted, e.g. hexafluoro - 2 - propyl, alkanyl groups or optionally substituted aryl or heterocyclic groups. The diluent may be omitted when the oxalic acid is a solvent for the fluorescer and the hydroperoxide compound. Chemiluminescent light is obtained by mixing the above components with hydroperoxide or hydroperoxide producing compound, e.g. hydrogen peroxide, which is preferred, urea peroxide, sodium pyrophosphate peroxide, histidine peroxide or sodium perborate. Suitable diluents, when used, are esters, ether-esters, cyclic and acyclic ethers, hydrocarbons and halohydrocarbons. If desired additional fluorescers may be added to the compositions