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Journal of Fluorescence

, Volume 24, Issue 1, pp 257–266 | Cite as

Synthesis, Photophysical Properties and Solvatochromism of Meso-Substituted Tetramethyl BODIPY Dyes

  • Lucas Cunha Dias de Rezende
  • Miguel Menezes Vaidergorn
  • Juliana Cristina Biazzotto Moraes
  • Flavio da Silva Emery
ORIGINAL PAPER

Abstract

The 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene fluorescent dyes (BODIPYs) were first synthesized almost 50 years ago; however, the exploration of their technological application has only begun in the last 20 years. These dyes possess interesting photophysical properties, increasing interest in their application as fluorescent markers and/or dyes. Herein, we report the synthesis of tetramethyl BODIPY and four meso-substituted dyes (2-thienyl, 4-pyridinyl, 4-fluorophenyl and 4-nitrophenyl derivatives). Their photophysical characterization (absorption spectra, emission spectra, fluorescence quantum yields and time-resolved fluorescence) and solvatochromic behavior were studied. Absorption and emission were barely affected by substituents, with a slightly higher stokes shift observed in the substituted dyes. Substitutions could be associated with a shorter fluorescence lifetime and lower quantum yields. Good correlations were observed between the Catalán solvent descriptors and the photophysical parameters. Also, better correlation was observed between the solvent polarizability descriptor (SP) and photophysical parameters. Overall, only slight solvatochromism was observed. The 4-pyridinyl derivative was the subject of a relatively significant solvatochromism regarding the wavelengths of the emission spectra, with the observation of a bathochromically shifted emission in methanol. The fluorescence quantum yield of the 4-nitrophenyl substituted BODIPY was approximately 30 times higher in hexane, which may be of interest for practical applications.

Keywords

BODIPY Solvatochromism Photophysical Fluorescence Quantum yield Lifetime 

Notes

Acknowledgments

This work was financed by São Paulo Research Foundation (FAPESP– grant #2011/23342-9), NAP-FTO—USP, INCT-IF. We are grateful to prof. Roberto Santana da Silva and the analytical centre of the institution.

Supplementary material

10895_2013_1293_MOESM1_ESM.docx (807 kb)
ESM 1 (DOCX 807 kb)

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Lucas Cunha Dias de Rezende
    • 1
  • Miguel Menezes Vaidergorn
    • 1
  • Juliana Cristina Biazzotto Moraes
    • 1
  • Flavio da Silva Emery
    • 1
  1. 1.Faculty of Pharmaceutical Sciences at Ribeirao PretoUniversity of São PauloRibeirão PretoBrazil

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