4471-41-4Relevant articles and documents
Dyestuff, ink and electric wetting display device
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Paragraph 0028-0029; 0031, (2019/01/14)
The invention provides an organic dyestuff, ink and an electric wetting display device. Being different from extremely low solubility of a common dyestuff with a diamino substituted anthraquinone structure in a non-polar organic solvent, the dyestuff provided by the invention has very high solubility in the non-polar organic solvent, so that the dyestuff can be put into large-scale production. After the organic dyestuff is dissolved into the organic solvent, the ink applicable to electric wetting display, and the electric wetting display device applying the ink can be prepared.
Near-IR region absorbing 1,4-diaminoanthracene-9,10-dione motif?based?ratiometric chemosensors for Cu2+
Kaur, Navneet,Kumar, Subodh
, p. 3168 - 3175 (2008/09/19)
1,4-Bis[2-aminoethylamino]anthracene-9,10-diones selectively bind with Cu2+ to form complexes with unusual selectivity under basic conditions. The deprotonation of the aryl amine NH in the case of these chemosensors causes a bathochromic shift in the absorption band from 585 nm and 635 nm to 725 nm and enables ratiometric estimation of Cu2+ between pH 8 and 12.
Synthesis and Antitumor Evaluations of Symmetrically and Unsymmetrically Substituted 1,4-Bisanthracene-9,10-diones and 1,4-Bis-5,8-dihydroxyanthracene-9,10-diones
Krapcho, A. Paul,Getahun, Zelleka,Avery, Kenneth L.,Vargas, Kevin J.,Hacker, Miles P.,et al.
, p. 2373 - 2380 (2007/10/02)
The ipso bis displacements of fluoride from 1,4-difluoroanthracene-9,10-dione (3) and 1,4-difluoro-5,8-dihydroxyanthracene-9,10-dione (4) by excess of a diamine (or a monoamine) in pyridine at room temperature lead to the symmetrically substituted 1,4-bis-substituted analogues 5 and 6, respectively.The ipso monodisplacements of fluoride from 3 and 4 can be accomplished by treatment with less than 1 molar equiv of a diamine (or a monoamine) to yield 7 and 8, respectively.Treatment of 7 or 8 with a different diamine leads to the unsymmetrically substituted1,4-bisanthracene-9,10-diones 9 and 10, respectively.Many of the synthetic unsymmetrical analogues have been evaluated for their antitumor activity against L1210 in vitro and in vivo.Cross resistance of analogue 10a with mitoxantrone (2) and doxorubicin was evaluated against MDR lines in vitro against human colon carcinoma LOVO and its subline resistant to DOXO (LOVO/DOXO).Potential mechanisms for the observed cytotoxicity are presented and discussed.