88949-33-1

Usage

Uses

Used in Dye Industry:
Pyrrolo3,4-cpyrrole-1,4-dione, 3,6-bis(1,1-biphenyl-4-yl)-2,5-dihydrois used as a dye due to its red color and bluish shade. Its heat resistance, light fastness, and acid and alkali resistance make it suitable for various applications in the dye industry.
Used in Pigment Industry:
Pyrrolo3,4-cpyrrole-1,4-dione, 3,6-bis(1,1-biphenyl-4-yl)-2,5-dihydrois used as a pigment due to its color, heat resistance, and light fastness. Its oil absorption and specific surface area properties make it suitable for use in the pigment industry.
Used in Ink Industry:
Pyrrolo3,4-cpyrrole-1,4-dione, 3,6-bis(1,1-biphenyl-4-yl)-2,5-dihydrois used as an ink ingredient due to its color, heat resistance, and light fastness. Its acid and alkali resistance properties make it suitable for use in the ink industry.
Used in Plastics and Rubber Industry:
Pyrrolo3,4-cpyrrole-1,4-dione, 3,6-bis(1,1-biphenyl-4-yl)-2,5-dihydrois used as a colorant in plastics and rubber due to its color, heat resistance, and light fastness. Its acid and alkali resistance properties make it suitable for use in these industries.

TEST ITEMS

SPECIFICATION

ALKALI RESISTANCE

5

DENSITY

1.60 g/cm 3

RESIDUE ON 80 MESH

5.0% max

VOLATITE 105 °C

1.0% max

Upstream product

• 924-88-9 diisopropyl succinate 
• 2920-38-9 4-cyano-1,1'-biphenyl 

Downstream Products

• 937739-40-7 C₃₉H₂₆N₂O₆ 

Relevant academic research and scientific papers

Post-deposition activation of latent hydrogen-bonding: A new paradigm for enhancing the performances of bulk heterojunction solar cells

Small conjugated molecules (SM) are gaining momentum as an alternative to semiconducting polymers for the production of solution-processed bulk heterojunction (BHJ) solar cells. The major issue with SM-BHJs is the low carrier mobility due to the scarce control on the phase-segregation process and consequent lack of preferential percolative pathways for electrons and holes to the extraction electrodes. Here, a new paradigm for fine tuning the phase-segregation in SM-BHJs, based on the post-deposition exploitation of latent hydrogen bonding in binary mixtures of PCBM with suitably functionalized electron donor molecules, is demonstrated. The strategy consist in the chemical protection of the H-bond forming sites of the donor species with a thermo-labile functionality whose controlled thermal cleavage leads to the formation of stable, crystalline, phase-separated molecular aggregates. This approach allows the fine tuning of the nanoscale film connectivity and thereby to simultaneously optimize the generation of geminate carriers at the donor-acceptor interfaces and the extraction of free charges via ordered phase-separated domains. As a result, the PV efficiency undergoes an over twenty-fold increase with respect to control devices. This strategy, demonstrated here with mixtures of diketopyrrolopyrrole derivatives with PCBM can be extended to other molecular systems for achieving highly efficient SM-BHJ solar cells.

Preparation and characterizations of solvent soluble dyes based on dimerized diketo-pyrrolo-pyrrole pigment

We have prepared three pigments and six soluble dyes with thermal stability derived from diketo-pyrrolo-pyrrole (DPP) pigment by N-alkylation and dimerization. Synthesized dyes and pigments were measured by an absorption maximum (λmax) and thermal stability using a UV-VIS spectrophotometer and thermogravimetric analysis (TGA) respectively, comparing with C.I. Pigment Red 254. These dyes exhibited superior solubility to the organic solvents by introducing the linking group (n-octyl). DPP pigments have inferior thermal and solvent stability, which has so far inhibited their commercial adoption in color filter fabrication. The thermal stability of the N-alkylated dyes can be highly contributed by both the carbon number and their shapes of N-alkyl group in DPP ring.

IMPROVED, RED COLOUR FILTER COMPOSITION

A composition, for producing dispersions, thermoplastic masses and/or colour filters, comprising (a) a colourant of formula (1) wherein 20-100 mol% R1 are Br and 80-100 mol% R3 are H, especially of formula (Ib) and /or (Ic); (b) from 0 to 150 % by weight, based on (a), of C. I. Pigment Red 144, 188, 190, 224, 242 or 2,4,6-trimethylphenylperylene diimide; (c) from 3 to 25 % by weight, based on (a), of a di- or tri-azacyclopentylmethyl-substituted colourant (formulae given); (d) from 0 to 10 % by weight, preferably from 0.01 to 8 % by weight, based on the sum of (a) and (b), of an additionally sulfonated colourant of the same kernels as in (c); and (e) from 0 to 30 % by weight, preferably from 3 to 25 % by weight, especially from 5 to 20 % by weight, based on (a), of a diketopyrrolopyrrole colourant substituted by at least one chain containing a plurality of nitrogen atoms (cf. formula (V)). The compound of formula (Ig), wherein R20 and R22 are, each independently of the other, H, Cl, Br, CN, CF3, R22, OR22, SR22, SOR22, SO2R22, NR23COR22, COOR23, CONR22R23, CONH2, CON(R22)2 or CON(R24), preferably Cl, Br, CN or R22, wherein R22, in each case independently of any other R22, is C1-C5alkyl, C2-C5alkylene, phenyl or 2-naphthyl, preferably methyl or phenyl, R23, in each case independently of any other R23, is H, d-C5alkyl or C2-C5alkylene, preferably H Or CH3, and R24, in each case independently of any other R24, is C4-C8alkylene which is uninterrupted or interrupted one or more times by NR23, NOR23, O, S, SO or by SO2, R24 in N(R24) forming with N a preferably 5- or 6-membered heterocyclic ring, with the proviso that R20 and R21 are not simultaneously Br and H, respectively, and also solid solutions thereof are likewise claimed. Also claimed is the compound of formula (Vb), wherein R27 is Br, Cl, F or methyl, R28 is H, C1-alkyl, or C6-C12alkyl wherein a carbon atom has been replaced by a nitrogen atom, and R29 is C6-C18alkyl wherein 1 or 2 carbon atoms has/have been replaced by nitrogen atom(s).

SOLVENT-FREE PROCESS FOR THE PREPARATION OF DIKETOPYRROLOPYRROLE DERIVATIVES

The present application relates to compounds of formula A(D)X(E)y, (I), compounds of formula (III), compounds of formula (X), as well as processes for the preparation thereof, processes where the compounds (I) are converted to pigments of formula (II) and the use of the compounds (I).

Direct preparation of pyrrolo[3,4-C]pyrroles

A process is disclosed for the direct preparation of pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles of the formula (I) wherein each of R1and R2independently of the other is an isocyclic or heterocyclic aromatic radical, which process comprises heating an appropriate molar ratio of a disuccinate with a nitrile of the formula (II) R1—CN??(II) or of the formula (III) R2—CN??(III) or with mixtures of said nitrites, in an organic solvent and in the presence of a strong base and an effective amount of a selected particle growth inhibitor of formula (IV)-(X), and then obtaining the compound of formula (I) from the reaction product by protolysis. The process yields pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles directly, i.e., without the need for additional particle-size reducing aftertreatments. Also disclosed is a composition comprising a pigmentary 1,4-diketopyrrolo-[3,4-c]pyrrole and the particle growth inhibitor. These pigment compositions are useful for pigmenting high molecular weight organic materials.