Accession Number : AD0626937

Title :   CHEMILUMINESCENT SYSTEMS.

Descriptive Note : Technical rept.

Corporate Author : MONSANTO RESEARCH CORP EVERETT MASS BOSTON LAB

Report Date : 20 JAN 1966

Pagination or Media Count : 27

Abstract : The objective of this research is the discovery of bright, chemiluminescent reactions suitable for development into practical field systems. In this report, we discuss the heterogeneous catalysis of chemiluminescence, and we describe the emitting state in skatole chemiluminescence. An apparatus is described which was designed for the investigation of chemiluminescence enhancement by solid state catalysis. While the autoxidation of lucigenin on silica gel was non-chemiluminescent, the chemiluminescence from skatole on 5A molecular sieves appears promising. The emitting species in the skatole chemiluminescent reaction has been identified. The autoxidation of skatole in DMSO/t-BuOK has been shown to proceed to o-formidoacetophenone anion (FAP) in high yield. The fluorescence of FAP matches the chemiluminescence emission spectrum of skatole in emission peak and contour. This identification confirms, for the more important skatole system, the identification of an emittor analogous to that previously identified in the 2,3-dimethylindole system. Analysis of the previously reported substituent effects led us to synthesize several 5-substituted skatoles in an attempt to improve the overall quantum efficiency. The materials were found to be quite similar to skatole in both efficiency and brightness, but were, however, odorless. Several factors influencing the quantum yield are discussed.

Descriptors :   (*CHEMILUMINESCENCE, ORGANIC MATERIALS), (*INDOLES, CHEMILUMINESCENCE), (*CATALYSIS, CHEMILUMINESCENCE), EMISSIVITY, ION EXCHANGE RESINS, OXIDATION, SOLVENTS, ACETOPHENONES, FLUORESCENCE, FORMAMIDES, CONTINUOUS SPECTRA, QUANTUM STATISTICS, BRIGHTNESS, ODORS, ALDEHYDES, PEROXIDES

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE