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DPP dyes are based on the bicyclic heterocyclic compound diketopyrrolopyrrole. 2,5-Dihydropyrrolo[3,4-c]pyrrole-1,4-dione is a basic body of Diketopyrrolopyrrole dye. DPP pigments are an important class of high-performance pigments used in inks, paints and plastic.
Pyrrolines, also known under the name dihydropyrroles, are three different heterocyclic organic chemical compounds that differ in the position of the double bond.Pyrrolines are formally derived from the aromate pyrrole by hydrogenation. 1-Pyrroline is a cyclic imine, whereas 2-pyrroline and 3-pyrroline are cyclic amines.
Pyrrole is a heterocyclic, aromatic, organic compound, a five-membered ring with the formula C 4 H 4 NH. [3] It is a colorless volatile liquid that darkens readily upon exposure to air.
3,4-Dihydropyran (DHP) is a heterocyclic compound with the formula C 5 H 8 O. The six-membered C 5 O ring has the unsaturation adjacent to oxygen. The isomeric 3,6-dihydropyran has a methylene separating the double bond and oxygen.
BODIPY and its derivatives can be obtained by reacting the corresponding 2,2'-dipyrromethene derivatives with boron trifluoride-diethyl ether complex (BF 3 · (C 2 H 5) 2 O) in the presence of triethylamine or 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). [1]
A given pigment or dye molecule absorbs different wavelengths of electromagnetic radiation according to its atomic structure and local chemical environment. The quantum behavior of a chemical typically results in distinct resonant frequencies of chemical bonds, which can be excited best by discrete wavelengths—meaning broad spectrum radiation ...
Sunset yellow FCF (also known as orange yellow S, or C.I. 15985) is a petroleum-derived orange azo dye with a pH-dependent maximum absorption at about 480 nm at pH 1 and 443 nm at pH 13, with a shoulder at 500 nm.
Textile dye (USA) Tropaeolin G (Metanilgelb) Acid Yellow 36: 587-98-4 pH 1.2–2.3 yellow Tropaeolin RNP (Resorcinbraun) Acid Orange 24: 1320-07-6 – Coloring cosmetics