Fluorescent compositions comprising diketopyrrolopyrroles

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 11/06 (2006.01) C07D 487/04 (2006.01) H01L 51/30 (2006.01) H05B 33/14 (2006.01) H01L 51/50 (2006.01)

Patent

CA 2469269

The present invention relates to compositions comprising a guest chromophore and a host chromophore, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, wherein the host chromophore is a diketopyrrolopyrrole having an absorption peak at 500 to 720 nm, preferably 500 to 600 nm, most preferred 520 to 580 nm and wherein the guest chromophore is a diketopyrrolopyrrole having an absorption peak at 500 to 720 nm, preferably 500 to 600 nm, most preferred 520 to 580 nm and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, dye lasers and electroluminescent devices. A luminescent device comprising a composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.

L'invention concerne des compositions comprenant un chromophore invité et un chromophore hôte, le spectre d'absorption du chromophore invité chevauchant le spectre d'émission de fluorescence du chromophore hôte. Le chromophore hôte est un dicétopyrrolopyrrole présentant une pointe d'émission de photoluminescence à 500 à 720 nm, de préférence 500 à 600 nm, idéalement 520 à 580 nm. Le chromophore invité est un dicétopyrrolopyrrole présentant une crête d'absorption à 500 à 720 nm, de préférence 500 à 600 nm, idéalement 520 à 580 nm. L'invention porte également sur leur utilisation pour la préparation d'encres, de colorants, de plastiques pigmentés pour revêtements, de matériau d'impression sans impact, de filtres colorés, de produits cosmétiques, de particules d'encres polymères, de toners, de lasers à colorants et de dispositifs électroluminescents. Un dispositif luminescent comprenant une composition de l'invention est très efficace pour ce qui concerne l'utilisation de l'énergie électrique et possède une luminance élevée.

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