Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Hui-Fen Qian"'
Publikováno v:
Dyes and Pigments. 166:226-232
5-Hydroxy-1-phenyl-1H-pyrazole-3-carboxylic acid was selected as the coupling component to react with three S /N-containing heterocyclic (2-amino-4-chloro-5-formylthiophene-3-carbonitrile, 5-nitrobenzo[c]isothiazol-3- amine, 5-amino-1-ethyl-6-hydroxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3651bc963137e82c86b351903660c471
https://doi.org/10.1016/j.dyepig.2019.03.046
https://doi.org/10.1016/j.dyepig.2019.03.046
Publikováno v:
Dyes and Pigments. 160:853-862
Two pairs of isomeric heterocyclic dyes were synthesized successfully by diazotization reactions between the common 1-phenyl-3-methyl-5-pyrazolone coupling component and 2-aminobenzoic/4-aminobenzoic acid as well as 2-amino-5-nitrophenol/2-amino-3-ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94ca516a61c8d3f976b00654b9185d01
https://doi.org/10.1016/j.dyepig.2018.09.018
https://doi.org/10.1016/j.dyepig.2018.09.018
Publikováno v:
Hua Xi Kou Qiang Yi Xue Za Zhi
OBJECTIVE: To analyze the chromatic properties and translucency of porcelain veneers made from different ceramic materials against the background of tetracycline-stained teeth. METHODS: Porcelain specimens (A1, A3, B2, B4) measuring 0.50 mm in thickn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0cdb309938aff174b04c196a84bbf634
https://pubmed.ncbi.nlm.nih.gov/34041885
https://pubmed.ncbi.nlm.nih.gov/34041885
Publikováno v:
Shanghai kou qiang yi xue = Shanghai journal of stomatology. 29(2)
To analyze the effect of porcelain layer thicknesses and substrates on color properties and translucency of IPS e.max LT porcelain laminate veneers used to restore tetracycline stained teeth.Porcelain specimens with different core and veneer thicknes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e187100ca2906358578eeca4afc7084a
https://pubmed.ncbi.nlm.nih.gov/32626874
https://pubmed.ncbi.nlm.nih.gov/32626874
Publikováno v:
Dyes and Pigments. 154:205-215
Bis(pyridine-2,6-dione) dyes with different pyridine N-tails are first used as the multidentate ligands to prepare a series of CaII, NaI, CuII and NiII complexes. 1H NMR and UV–Vis spectral as well as X-ray single-crystal analyses reveal that they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cc2ab2e951cfc95d7d0df2f378ef366
https://doi.org/10.1016/j.dyepig.2018.03.007
https://doi.org/10.1016/j.dyepig.2018.03.007
Publikováno v:
Dyes and Pigments. 153:44-52
Ortho/para-aminobenzoic acids and corresponding methyl esters were selected as the diazo components to couple with two mono functional group transformation (FGT) precursors with different pyridine N-substituted groups [1-ethyl-6-((3-methoxypropyl)ami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec63f7a4ec672f3154337b08dd6c0525
https://doi.org/10.1016/j.dyepig.2018.01.054
https://doi.org/10.1016/j.dyepig.2018.01.054
Publikováno v:
Dyes and Pigments. 149:796-803
A family of bi-heterocyclic dyes have been first synthesized by using heterocyclic pyridone and benzothiazole components. UV−Vis spectral analyses reveal distinct spectral behaviors depending on the introduced electron-withdrawing and electron-dona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aab17b971752de34ab3e84b6d4195c6d
https://doi.org/10.1016/j.dyepig.2017.11.054
https://doi.org/10.1016/j.dyepig.2017.11.054
Autor:
Hui-Fen Qian, Wei Huang
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 9, Pp o2420-o2420 (2011)
In the title compound, C18H24N22+·2Cl−·H2O, both the cation and the water molecule lie on a twofold crystallographic axis. In the cation, the two benzene rings are perpendicular to each other, making a symmetry-constrained dihedral angle of 90°.
Externí odkaz:
https://doaj.org/article/5aaeaae29e4f4ad1912962e3f8345a64
Autor:
Hui-Fen Qian, Wei Huang
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 8, Pp o2044-o2044 (2011)
In the title molecular salt, C7H6N3O2S+·HSO4−, the 2-amino-6-nitro-1,3-benzothiazole ring system is essentially planar [mean deviation = 0.0605 (4) Å]. In the crystal, N—H...O and O—H...O hydrogen-bonding interactions result in a layer motif.
Externí odkaz:
https://doaj.org/article/3024429ae6fc490f89289c3ec6f87dde
Autor:
Hui-Fen Qian, Wei Huang
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 8, Pp o2059-o2059 (2011)
In the title compound, C12H12Cl2N22+·SO42−, the two rings are not coplanar [dihedral angle = 48.7 (2)°]. In the crystal, multiple N—H...O hydrogen-bond interactions are found between the ammonium and sulfate groups.
Externí odkaz:
https://doaj.org/article/431dc754ca8f4404a46ed7a203748613