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Pyrrolopyrrole Cyanine Dyes: A New Class of Near‐Infrared Dyes and Fluorophores |
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| Authors: | Georg M. Fischer Dipl.‐Chem. Magnus Isomäki‐Krondahl Inigo Göttker‐Schnetmann Dr. Ewald Daltrozzo Prof. Dr. Andreas Zumbusch Prof. Dr. |
| Affiliation: | Fachbereich Chemie, Universit?t Konstanz, 78457 Konstanz (Germany), Fax: (+49)?7531‐883870 |
| Abstract: | NIRer there : Pyrrolopyrrole cyanine (PPCys) dyes, a new class of near‐infrared (NIR) fluorophores, are obtained by condensation of heteroarylacetonitrile and diketopyrrolopyrrole compounds (see picture). Complexation with BF2 or BPh2 yields strongly fluorescent, photostable NIR dyes that show high absorption cross‐sections and fluorescence quantum yields. Furthermore, alteration of the heterocycle can tune the main absorption between λ = 684 and 864 nm.  |
| Keywords: | chromophores dyes/pigments fluorescent probes fluorophores heterocycles |