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Diazapentacenes from Quinacridones.
Wiesner T, Ahrens L, Rominger F, Freudenberg J, Bunz UHF. Wiesner T, et al. Chemistry. 2021 Mar 8;27(14):4553-4556. doi: 10.1002/chem.202004761. Epub 2021 Feb 17. Chemistry. 2021. PMID: 33289942 Free PMC article.
Bis(silylethynylated) 5,7- and 5,12-diazapentacenes were synthesized from cis- and trans-quinacridone using protection, alkynylation and deoxygenation. The solid-state packing of the targets is determined by choice and position of the silylethynyl substituents. ...
Bis(silylethynylated) 5,7- and 5,12-diazapentacenes were synthesized from cis- and trans-quinacridone using protection, alkynylation …
Azo pigments and quinacridones induce delayed hypersensitivity in red tattoos.
Gaudron S, Ferrier-Le Bouëdec MC, Franck F, D'Incan M. Gaudron S, et al. Contact Dermatitis. 2015 Feb;72(2):97-105. doi: 10.1111/cod.12317. Epub 2014 Dec 2. Contact Dermatitis. 2015. PMID: 25441375
Azo pigments have been implicated in some instances, but there is only one reported case involving quinacridones. OBJECTIVES: To describe the clinical and pathological features and outcome of skin reactions induced by red tattoo pigments. ...Activation of the reaction in 1 …
Azo pigments have been implicated in some instances, but there is only one reported case involving quinacridones. OBJECTIVES: To desc …
Acridones and quinacridones: novel fluorophores for fluorescence lifetime studies.
Smith JA, West RM, Allen M. Smith JA, et al. J Fluoresc. 2004 Mar;14(2):151-71. doi: 10.1023/b:jofl.0000016287.56322.eb. J Fluoresc. 2004. PMID: 15615041
Two new families of fluorescent probe, acridones and quinacridones, whose fluorescence lifetime can be altered to produce a range of lifetimes from 3 ns to 25 ns are described. ...The labelled peptides have the same fluorescence lifetime as the free fluorophore. Quinacr …
Two new families of fluorescent probe, acridones and quinacridones, whose fluorescence lifetime can be altered to produce a range of …
Pyridone-Doped Acenes with Improved Stability.
Yan C, Ding W, Zhang G. Yan C, et al. Chemistry. 2023 Jun 2;29(31):e202300971. doi: 10.1002/chem.202300971. Epub 2023 Apr 19. Chemistry. 2023. PMID: 37026688
However, the utilization of 4-pyridone, a common unit in the air- and photo-stable acridone and quinacridone, to decorate higher acenes with increased stability has not been realized yet. ...
However, the utilization of 4-pyridone, a common unit in the air- and photo-stable acridone and quinacridone, to decorate higher acen …
Alkyl and dendron substituted quinacridones: synthesis, structures, and luminescent properties.
Wang J, Zhao Y, Dou C, Sun H, Xu P, Ye K, Zhang J, Jiang S, Li F, Wang Y. Wang J, et al. J Phys Chem B. 2007 May 17;111(19):5082-9. doi: 10.1021/jp068646m. Epub 2007 Apr 18. J Phys Chem B. 2007. PMID: 17439269
The synthesis of two alkyl substituted quinacridone derivatives, N,N'-di(n-hexyl)-1,3,8,10-tetramethylquinacridone (1) and N,N'-di(n-hexyl)-2,9-di(t-butyl)quinacridone (2), and four dendritic quinacridone derivatives, N,N'-didendritic-1,3,8,10-tetramethylquin …
The synthesis of two alkyl substituted quinacridone derivatives, N,N'-di(n-hexyl)-1,3,8,10-tetramethylquinacridone (1) and N,N'-di(n- …
Identifying and explaining vibrational modes of quinacridones via temperature-resolved terahertz spectroscopy: absorption experiments and solid-state density functional theory simulations.
Squires AD, Zaczek AJ, Lewis RA, Korter TM. Squires AD, et al. Phys Chem Chem Phys. 2020 Sep 16;22(35):19672-19679. doi: 10.1039/d0cp03150j. Phys Chem Chem Phys. 2020. PMID: 32830208
Quinacridone and its substituted analogs are pigments widely used in art and industry. ...It was found that some of the powder X-ray diffraction features in only beta-quinacridone (15.7, 19.7 and 31.2 at 13 K) underwent anomalous shifting with temperature change. .. …
Quinacridone and its substituted analogs are pigments widely used in art and industry. ...It was found that some of the powder X-ray …
Tattoo hypersensitivity reactions: inky business.
Atwater AR, Bembry R, Reeder M. Atwater AR, et al. Cutis. 2020 Aug;106(2):64-67. doi: 10.12788/cutis.0028. Cutis. 2020. PMID: 32941558
Modern permanent tattoo ink is a blend of pigments, including metals, as well as carbon, azo, diketopyrrolopyrrole, quinacridone, anthraquinone, dioxazine (purple), or quinophthalone (yellow) dyes. ...
Modern permanent tattoo ink is a blend of pigments, including metals, as well as carbon, azo, diketopyrrolopyrrole, quinacridone, ant …
Site-isolated, intermolecularly photocrosslinkable and patternable dendritic quinacridones.
D'Ambruoso GD, Ross EE, Armstrong NR, McGrath DV. D'Ambruoso GD, et al. Chem Commun (Camb). 2009 Jun 14;(22):3222-4. doi: 10.1039/b901897b. Epub 2009 May 12. Chem Commun (Camb). 2009. PMID: 19587920
Quinacridone-cored dendrimers with photocrosslinkable cinnamate moieties on the periphery can be patterned down to 5 micron features while retaining luminescence....
Quinacridone-cored dendrimers with photocrosslinkable cinnamate moieties on the periphery can be patterned down to 5 micron features …
Distinguishing Quinacridone Pigments via Terahertz Spectroscopy: Absorption Experiments and Solid-State Density Functional Theory Simulations.
Squires AD, Lewis RA, Zaczek AJ, Korter TM. Squires AD, et al. J Phys Chem A. 2017 May 11;121(18):3423-3429. doi: 10.1021/acs.jpca.7b01582. Epub 2017 Apr 26. J Phys Chem A. 2017. PMID: 28445038
Through a combined experimental and theoretical investigation we determine that the fundamental modes of three quinacridones fall in the terahertz spectral range (1-10 THz, 30-300 cm(-1)). ...In spite of these spectral similarities, we demonstrate that terahertz measuremen …
Through a combined experimental and theoretical investigation we determine that the fundamental modes of three quinacridones fall in …
Organic Material Based Fluorescent Sensor for Hg2+: a Brief Review on Recent Development.
Saleem M, Rafiq M, Hanif M. Saleem M, et al. J Fluoresc. 2017 Jan;27(1):31-58. doi: 10.1007/s10895-016-1933-x. Epub 2016 Sep 19. J Fluoresc. 2017. PMID: 27646651 Review.
In the present investigation, we have tried to summarized the several organic material based fluorescent sensor including rhodamine, boron-dipyrromethene (BODIPYs), thiourea, crown-ether, coumarine, squaraines, pyrene, imidazole, triazole, anthracene, dansyl, naphthalenedimide/ n …
In the present investigation, we have tried to summarized the several organic material based fluorescent sensor including rhodamine, boron-d …
108 results