New fluorescent indolium and quinolinium dyes for applications in aqueous halide sensing was written by Geddes, Chris D.;Douglas, Peter;Moore, Christopher P.;Wear, Trevor J.;Egerton, Peter L.. And the article was included in Dyes and Pigments in 1999.Electric Literature of C15H29BrO2 This article mentions the following:
Bromide and teraphenylborate salts of six new highly fluorescent dyes, produced by the reaction of two heterocyclic nitrogen bases (6-methoxyquinoline and harman) with 8-bromooctanoic acid, 11-bromoundecanoic acid, and 15-bromopentadecanoic acid have been prepared Unlike the bases themselves, the quaternary salts are water soluble and have fluorescence characteristics independent of pH in the range 7-11. Both the fluorescence intensity and fluorescence lifetime of these dyes are reduced in the presence of aqueous halide ions, allowing halide concentrations to be determined accurately at concentrations of importance to both medicine and industry. All the dyes have been characterized in terms of steady state fluorescence spectra and steady-state Stern-Volmer anal. The Stern-Volmer constants for the dyes are compared to those obtained for some com. available dyes. The prospects for using these dyes in halide sensor devices are discussed. In the experiment, the researchers used many compounds, for example, 15-Bromopentadecanoic acid (cas: 56523-59-2Electric Literature of C15H29BrO2).
15-Bromopentadecanoic acid (cas: 56523-59-2) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon鑱砨romine bond is electrophilic in nature. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Electric Literature of C15H29BrO2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary