ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis and Spectral Characteristics of the Free and Bound Luminophore Derived from  Bromophenanthrene

P. Hrdlovič, I. Lukáč, and M. Habeková

Polymer Institute, Slovak Academy of Sciences, SK-842 36 Bratislava

Abstract: Friedel-Crafts acylation of 9-bromophenanthrene with 3-chloropropanoyl chloride yielded 3-(3-chloropropanoyl)-9-bromophenanthrene that was used to prepare 3-propenoyl-9-bromophenanthrene. Radical copolymerization of the latter compound with styrene, methyl methacrylate, and ethyl acrylate yielded statistic copolymers.The spectral properties of the new 3-acyl-9-bromophenanthrene type of luminophore we re com pared with the ones of derivatives of phenanthrene and anthracene in polymer matrix at 77 K and laboratory temperature. As opposed to the parent hydrocarbons the new luminophore exhibits the phosphorescence exclusively (λ_max approximate to 520 nm) both at laboratory temperature and 77 K. The lifetime of emission at 77 K is about 8 ms and the decay is monoexponential.

Full paper in Portable Document Format: 483a206.pdf

Chemical Papers 48 (3) 206–210 (1994)