120500-90-5Relevant articles and documents
Diketopyrrolopyrrole Bis-Phosphonate Conjugate: A New Fluorescent Probe for In Vitro Bone Imaging
Chiminazzo, Andrea,Borsato, Giuseppe,Favero, Alessia,Fabbro, Chiara,McKenna, Charles E.,Dalle Carbonare, Luca Giuseppe,Valenti, Maria Teresa,Fabris, Fabrizio,Scarso, Alessandro
, p. 3617 - 3626 (2019)
The synthesis of a conjugate molecule between an unusual red-fluorescent diketopyrrolopyrrole (DPP) unit and a bis-phosphonate (BP) precursor by a click-chemistry strategy to target bone tissue and monitor the interaction is reported. After thorough investigation, conjugation through a triazole unit between a γ-azido rather than a β-azido BP and an alkyne-functionalized DPP fluorophore group turned out to be the winning strategy. Visualization of the DPP-BP conjugate on osteoclasts and specific antiresorption activity were successfully demonstrated.
Highly fluorescent and water-soluble diketopyrrolopyrrole dyes for bioconjugation
Heyer, Elodie,Ziessel, Raymond,Lory, Pauline,Moreau, Mathieu,Romieu, Anthony,Leprince, Jrme,Guardigli, Massimo,Roda, Aldo
, p. 2995 - 2999 (2015)
The preparation of highly water-soluble and strongly fluorescent diketopyrrolopyrrole (DPP) dyes using an unusual taurine-like sulfonated linker has been achieved. Exchanging a phenyl for a thienyl substituent shifts the emission wavelength to near λ = 600 nm. The free carboxylic acid group present in these new derivatives was readily activated and the dyes were subsequently covalently linked to a model protein (bovine serum albumin; BSA). The bioconjugates were characterized by electronic absorption, fluorescence spectroscopy and MALDI-TOF mass spectrometry, thus enabling precise determination of the labeling density (ratio DPP/BSA about 3 to 8). Outstanding values of fluorescence quantum yield (30% to 59%) for these bioconjugates are obtained. The photostability of these DPP dyes is considerably greater than that of fluorescein under the same irradiation conditions. Remarkably low detection limits between 80 and 300 molecules/μm2 were found for the BSA bioconjugates by fluorescence imaging with a epifluorescence microscope.
A Thienyl-Substituted Diketopyrrolopyrrole Derivative with Efficient Reactive Oxygen Species Generation for Photodynamic Therapy
Shi, Huaxia,Sun, Wucheng,Wang, Qiang,Gu, Guiying,Si, Weili,Huang, Wei,Zhang, Qi,Dong, Xiaochen
, p. 515 - 520 (2016)
Reducing the energy gap of photosensitizer between singlet and triplet states (ΔEST) can improve the efficiency of intersystem crossing, further enhancing the resulting generation of reactive oxygen species for photodynamic therapy. In this study, two photosensitizer chromophores—phenyl-substituted diketopyrrolopyrrole and thienyl-substituted diketopyrrolopyrrole (TDPP)—were synthesized. Theoretical calculations indicate that TDPP can greatly reduce the ΔEST (0.48 eV) relative to that of diketopyrrolopyrrole (0.66 eV). Experiments confirmed that TDPP generates reactive oxygen species more efficiently than diketopyrrolopyrrole. After conjugation of TDPP with methoxy poly(ethylene glycol)carboxyl (mPEG-COOH), the resulting TDPP-mPEG has excellent water solubility, biocompatibility and photostability. When it serves as photosensitizer for photodynamic therapy, in vitro and in vivo measurements indicate that TDPP-mPEG can effectively inhibit tumor growth and shows great potential for the treatment of cancer in the clinic.
An Electron-Accepting aza-BODIPY-Based Donor–Acceptor–Donor Architecture for Bright NIR Emission
Kage, Yuto,Kang, Seongsoo,Mori, Shigeki,Mamada, Masashi,Adachi, Chihaya,Kim, Dongho,Furuta, Hiroyuki,Shimizu, Soji
, p. 5259 - 5267 (2021)
A bright near-infrared (NIR) fluorescent molecule was developed based on the donor–acceptor–donor (D–A–D) approach using an aza-BODIPY analog called pyrrolopyrrole aza-BODIPY (PPAB) as an electron-accepting chromophore. Directly introducing electron-donating triphenylamine (TPA) to develop a D–A–D structure caused redshifts of absorption and emission of PPAB into the NIR region with an enhanced fluorescence brightness of up to 5.2×104 m?1 cm?1, whereas inserting a phenylene linker between the TPA donor and the PPAB acceptor induced solvatochromic behavior in emission. Transient absorption spectra and theoretical calculations revealed the presence of a highly emissive hybridized locally excited and charge-transfer state in the former case and the contribution of the dark charge-separated state to the excited state in the latter case. The bright D–A–D PPAB as a novel emitter resulted in a NIR electroluminescence with a high external quantum efficiency of 3.7 % and a low amplified spontaneous emission threshold of ca. 80 μJ cm?2, indicating the high potential for NIR optoelectronic applications.
Fluorine Directed Two-Dimensional Cruciform π-π Stacking in Diketopyrrolopyrroles
Calvo-Castro, Jesus,Morris, Graeme,Kennedy, Alan R.,McHugh, Callum J.
, p. 5385 - 5393 (2016)
Enhanced bulk dimensionality in organic materials employed in optoelectronic devices is desirable and can overcome fabrication issues related to structural defects and grain boundaries. Herein, we report a novel fluorinated diketopyrrolopyrrole single cry
Rational synthesis and comparative investigation on a series of fluorinated aryl substituted diketopyrrolopyrrole
Xu, Jie,Zhang, Shaoze,Wu, Shengying,Bi, Shiming,Li, Xinjin,Lu, Yunxiang,Wang, Limin
, p. 494 - 499 (2017/01/14)
We novelly designed and synthesized a set of fluorinated diphenyl-diketopyrrolopyrrole (DPP) compounds by varying the position and amount of fluorine atom, and to the best of our knowledge, it is the first time a difluoromethyl group and perfluoroalkyl ch
An efficient pathway to synthesize diketopyrrolopyrrole pigments in ionic liquids
Nourmohammadian, Farahnaz,Shamekhi, S. Shiva
, p. 131 - 138 (2013/07/26)
The investigation results of an efficient pathway for the synthesis of high-performance 1, 4-diketo-3, 6-diphenyl pyrrolo [3, 4-c] pyrroles pigments using diethyl succinate in ionic liquids ([BMIM][BF4], and [HMIM][BF4]) has been reported. Synthesis of 3, 6-Bis (4-chlorophenyl)-2, 5-dihydropyrrolo [3, 4-c] pyrrole-1, 4-dione using [BMIM][BF4] is more efficient (81% at 30°C) than conventional methods (70% at 105-110°C). 3, 6-Bis (4-bromophenyl)-2, 5-dihydropyrrolo [3, 4-c] pyrrole-1, 4-dione was produced in this approach with 73% yield at 30°C in 8 h reaction time instead of the previously reported (65% yield in 24 h). The production yield of 1, 4-diketo-3, 6-diphenyl pyrrolo [3, 4-c] pyrroles was not highly affected by ionic liquids, and produced in maximum 43% yield. The crystalline phase, particle sizes and morphologies of the synthesized pigments have also been reported.
IMPROVED, RED COLOUR FILTER COMPOSITION
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Page/Page column 40-41, (2009/12/27)
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
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Page 14, (2010/02/08)
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).
Synthetic studies related to diketopyrrolopyrrole (DPP) pigments. Part 1: The search for alkenyl-DPPs. Unsaturated nitriles in standard DPP syntheses: A novel cyclopenta[c]pyrrolone chromophore
Morton, Colin J.H,Gilmour, Ryan,Smith, David M,Lightfoot, Philip,Slawin, Alexandra M.Z,MacLean, Elizabeth J
, p. 5547 - 5565 (2007/10/03)
Reactions of the anion of ethyl 4,5-dihydro-5-oxo-2-phenylpyrrole-3-carboxylate with the Diels-Alder adducts of acrylonitrile and various dienes rarely yield the expected DPP derivatives. The reaction with cyclohex-3-enecarbonitrile provides a noteworthy exception: thermolysis of the resulting cyclohexenyl-DPP gives butadiene and impure 3-ethenyl-6-phenyl-DPP, the latter being thermally unstable. Michael additions predominate when the above anion reacts with α,β-unsaturated nitriles: acrylonitrile and methacrylonitrile give 4,4-bis(cyanoethyl) and 4,4-bis(2-cyanopropyl) derivatives, and cinnamonitrile, substituted cinnamonitriles and 3-(2-thienyl)acrylonitrile give deep red 3-aryl-5-cyano-4-hydroxy-2H-cyclopenta[c]pyrrol-1-ones. These ambident nucleophiles may undergo N- and either O- or C-alkylation according to the alkylating agent used.
