Bright, color-tunable fluorescent dyes in the Vis/NIR region: Establishment of new "tailor-made" multicolor fluorophores based on borondipyrromethene

Keitaro Umezawa, Akihiro Matsui, Yuki Nakamura, Daniel Citterio, Koji Suzuki

Research output: Contribution to journalArticle

185 Citations (Scopus)

Abstract

A new series of high-performance fluorophores named Keio Fluors (KFL), which are based on borondipyrromethene (BODIPY), are reported. The KFL dyes cover a wide spectral range from the yellow (547 nm) to the near-infrared (NIR, 738 nm) region, and their emission wavelength could be easily and subtly controlled based on simple molecular modifications only, without losing their optical properties. This "tailor-made" synthetic strategy for tuning the emission wavelength enabled the creation of fourteen KFL dyes with well-controlled emission colors (yellow, orange, red, far-red, and NIR). Moreover, these KFL dyes also retain their excellent optical properties, such as spectral bands sharper than quantum dots, high extinction coefficients (140000-316000 M-1 cm-1), and high quantum yields (0.56-0.98), without any critical solvent polarity dependent decrease of their brightness. These advantageous characteristics make the KFL dyes potentially useful as new candidates of fluorescent standard dyes to substitute or to complement existing long-wavelength fluorescent dyes, such as cyanines, oxazines, rhodamines, or other BODIPY dyes.

Original languageEnglish
Pages (from-to)1096-1106
Number of pages11
JournalChemistry - A European Journal
Volume15
Issue number5
DOIs
Publication statusPublished - 2009 Jan 19

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Fluorophores
Fluorescent Dyes
Coloring Agents
Dyes
Color
Wavelength
Optical properties
Oxazines
Rhodamines
Quantum yield
Semiconductor quantum dots
Luminance
Tuning
Infrared radiation

Keywords

  • Boron
  • Dyes/pigments
  • Fluorescent probes
  • Imaging agents

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Bright, color-tunable fluorescent dyes in the Vis/NIR region : Establishment of new "tailor-made" multicolor fluorophores based on borondipyrromethene. / Umezawa, Keitaro; Matsui, Akihiro; Nakamura, Yuki; Citterio, Daniel; Suzuki, Koji.

In: Chemistry - A European Journal, Vol. 15, No. 5, 19.01.2009, p. 1096-1106.

Research output: Contribution to journalArticle

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