Tetrahedron Letters p. 979 - 982 (2016)
Update date:2022-08-11
Topics:
Pakhomov, Alexey A.
Kononevich, Yuriy N.
Stukalova, Maria V.
Svidchenko, Evgeniya A.
Surin, Nikolay M.
Cherkaev, Georgy V.
Shchegolikhina, Olga I.
Martynov, Vladimir I.
Muzafarov, Aziz M.
A fluorescent dye comprising four BODIPY derivatives conjugated to a cyclotetrasiloxane core was synthesized by consecutive hydrosilylation and esterification reactions. Photophysical properties of the dye in various organic solvents were investigated. It was shown that due to a fourfold extinction coefficient increase and a moderate quantum yield decrease the brightness of the tetra-BODIPY dye in low-polarity solvents, calculated per molecule, increased 3 times when compared to mono-BODIPY. By contrast, in polar solvents there was a dramatic drop in brightness apparently associated with intramolecular interactions of the low-polar BODIPY chromophores.
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