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Issue 1, 2018

Synthesis and characterization of pyrrolyldipyrrin F-BODIPYs

Author affiliations

Abstract

A series of synthetic analogs of the tripyrrolic natural product prodigiosin were complexed with boron trifluoride to generate the corresponding F-BODIPYs. The maximum wavelengths of absorption and emission of the pyrrolyldipyrrin F-BODIPYs were tuned through variation of the substituents about the pyrrolyldipyrrinato core. The limited variation of substituents on the C-ring did not significantly affect absorption and emission. However, variation of substituents on the B-ring and A-ring resulted in a corresponding red-shift in absorption and emission reaching maximum wavelengths of 600 nm. The presence of electron donating substituents on the B-ring caused a decrease in the Stokes shift, while the presence of electron-withdrawing substituents caused an increase, ranging from 3–25 nm. Stokes shifts were solvent-dependant for some compounds. The inclusion of a dimethylamino group resulted in photo-induced electron transfer and thus quenched fluorescence which was restored upon protonation.

Graphical abstract: Synthesis and characterization of pyrrolyldipyrrin F-BODIPYs

Supplementary files

Article information


Submitted
08 Sep 2017
Accepted
27 Nov 2017
First published
08 Dec 2017

Photochem. Photobiol. Sci., 2018,17, 89-98
Article type
Paper

Synthesis and characterization of pyrrolyldipyrrin F-BODIPYs

S. M. Greening, K. N. Robertson and A. Thompson, Photochem. Photobiol. Sci., 2018, 17, 89 DOI: 10.1039/C7PP00341B

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