The internal heavy-atom effect on 3-phenylselanyl and 3-phenyltellanyl BODIPY derivatives studied by transient absorption spectroscopy

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AL ANSHORI Jamaludin SLANINA Tomáš PALAO UTIEL Eduardo KLÁN Petr

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www http://pubs.rsc.org/en/Content/ArticleLanding/2016/PP/C5PP00366K#!divAbstract
Doi http://dx.doi.org/10.1039/c5pp00366k
Obor Fyzikální chemie a teoretická chemie
Klíčová slova SINGLET OXYGEN GENERATION; TRIPLET EXCITED-STATE; FLUORESCENT-PROBE; LIVING CELLS; PHOTODYNAMIC THERAPY; UP-CONVERSION; DYES; PHOSPHORESCENCE; DESIGN; THIOLS
Popis 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 (Phi(ISC)), determined by transient spectroscopy, increased in the order of the H -> Cl -> Se/I -> Te substitution. The maximum Phi(ISC), 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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