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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 (λmax 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)

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