A diketopyrrolopyrrole-based dimer as a blue pigment

• Verfasst von: Casutt, Manuela [VerfasserIn]
• Verfasst von: Kushida, Soh [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Verfasst von: Freudenberg, Jan [VerfasserIn]
• Verfasst von: Jänsch, Daniel [VerfasserIn]
• Titel: A diketopyrrolopyrrole-based dimer as a blue pigment
• Verf.angabe: Manuela Casutt, Benedikt Dittmar, Hanna Makowska, Tomasz Marszalek, Soh Kushida, Uwe H.F. Bunz, Jan Freudenberg, Daniel Jänsch, and Klaus Müllen
• E-Jahr: 2019
• Jahr: 09 January 2019
• Umfang: 6 S.
• Fussnoten: Gesehen am 24.07.2019
• Titel Quelle: Enthalten in: Chemistry - a European journal
• Ort Quelle: Weinheim : Wiley-VCH, 1995
• Jahr Quelle: 2019
• Band/Heft Quelle: 25(2019), 11, Seite 2723-2728
• ISSN Quelle: 1521-3765
• DOI: doi:10.1002/chem.201806121
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: 1
• Sach-SW: 4-cpyrrole
• Sach-SW: 4-diketopyrrolo3
• Sach-SW: blue pigment
• Sach-SW: dimerization
• Sach-SW: latent pigment
• Sach-SW: tert-butyloxycarbonyl
• K10plus-PPN: 1669952762

Abstract

1,4-Diketopyrrolo[3,4-c]pyrroles (DPPs) constitute a class of hydrogen-bonded pigments covering a color range from yellow-orange to dark violet. We report facile dimerization of a Boc-substituted 3,6-dithienyl-DPP. The formed dimer shows brilliantly blue color as a result of the expansion of the chromophore. The soluble dimer acts as latent pigment and is converted to the corresponding pigment either via thermocleavage or acidic deprotection of the Boc groups. The synthesized pigment is characterized by high migrational stability in a polymer matrix and a clear blue color.