The internal heavy-atom effect on 3-phenylselanyl and 3-phenyltellanyl BODIPY derivatives studied by transient absorption spectroscopy
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
26790756
DOI
10.1039/c5pp00366k
Knihovny.cz E-zdroje
- MeSH
- benzenové deriváty chemie MeSH
- fluorescenční barviva chemie MeSH
- fluorescenční spektrometrie MeSH
- organoselenové sloučeniny chemie MeSH
- sloučeniny boru chemie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene MeSH Prohlížeč
- benzenové deriváty MeSH
- fluorescenční barviva MeSH
- organoselenové sloučeniny MeSH
- sloučeniny boru MeSH
Three monosubstituted 3-phenylselanyl and 3-phenyltellanyl BODIPY derivatives were synthesized and their spectroscopic properties were characterized and compared to those of iodine and chlorine-atoms containing analogues as well as an unsubstituted BODIPY derivative. The fluorescence quantum yields were found to decrease, whereas the intersystem crossing quantum yields (ΦISC), determined by transient spectroscopy, increased in the order of the H → Cl → Se/I → Te substitution. The maximum ΦISC, found for the 3-phenyltellanyl derivative, was 59%. The results are interpreted in terms of the internal heavy-atom effect of the substituents.
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