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

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Authors

AL ANSHORI Jamaludin SLANINA Tomáš PALAO UTIEL Eduardo KLÁN Petr

Year of publication 2016
Type Article in Periodical
Magazine / Source PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
MU Faculty or unit

Faculty of Science

Citation
Web http://pubs.rsc.org/en/Content/ArticleLanding/2016/PP/C5PP00366K#!divAbstract
Doi http://dx.doi.org/10.1039/c5pp00366k
Field Physical chemistry and theoretical chemistry
Keywords SINGLET OXYGEN GENERATION; TRIPLET EXCITED-STATE; FLUORESCENT-PROBE; LIVING CELLS; PHOTODYNAMIC THERAPY; UP-CONVERSION; DYES; PHOSPHORESCENCE; DESIGN; THIOLS
Description 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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