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Synthesis and optical properties of a new class of pyrromethene–BF2 complexes fused with rigid bicyclo rings and benzo derivatives

✍ Scribed by Mitsuo Wada; Satoshi Ito; Hidemitsu Uno; Takashi Murashima; Noboru Ono; Toshiyuki Urano; Yasuteru Urano

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
63 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

A new class of boron dipyrromethene (BDP) dyes fused with rigid bicyclo[2.2.2]octadiene units are prepared, which are converted into benzo BDP dyes via a retro Diels-Alder reaction; the absorption and fluorescence spectra of the new dyes are discussed.

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✍ Jiong Chen; Armin Burghart; Chi-Wai Wan; Long Thai; Cesar Ortiz; Joe Reibenspies 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 167 KB

The 2-ketopyrrole complexes 3 and 4 were isolated as minor products in syntheses of the corresponding 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY ® ) dyes 1 and 2. Compounds 4 were shown to be highly fluorescent having emissions between 504 and 544 nm with quantum yields between 0.52 and 0.89