THE CHEMISTRY OF THE "AMINOCHROMES": PART IV. SOME NEW AMINOCHROMES AND THEIR DERIVATIVES

1960 ◽  
Vol 38 (4) ◽  
pp. 516-527 ◽  
Author(s):  
R. A. Heacock ◽  
B. D. Scott
Keyword(s):  
Acetic Anhydride ◽  
Absorption Spectra ◽  
Methyl Ether ◽  
Ethyl Ether ◽  
Crystalline Form ◽  
Chromatographic Behavior ◽  
Visible Absorption

N-Ethylnoradrenochrome, N-isopropylnoradrenochrome, adrenochrome methyl ether, adrenochrome ethyl ether, and their 2-iodo derivatives have been prepared in crystalline form. The action of acetic anhydride in pyridine on these aminochromes has been studied; acetylated rearrangement products were obtained in each case. N-Ethylnoradrenochrome monosemicarbazone, N-ethylnoradrenolutin, 5,6-diacetoxy-N-ethyl-2-iodoindole, and 5,6-diacetoxy-2-iodo-N-isopropylindole have been prepared. The ultraviolet and visible absorption spectra of the aminochromes described above and several 5,6-diacetoxy- and 3,5,6-triacetoxy-N-alkylindoles have been measured and the paper chromatographic behavior of the unhalogenated aminochromes studied.

ISOLATION OF ESTRADIOL-17β FROM HEN'S URINE AND ITS CHARACTERIZATION AS THE CRYSTALLINE 3-METHYL ETHER

1965 ◽  
Vol 43 (9) ◽  
pp. 1379-1385 ◽  
Author(s):  
F. Hertelendy ◽  
T. G. Taylor ◽  
R. S. Mathur ◽  
R. H. Common
Keyword(s):  
Melting Point ◽  
Thin Layer ◽  
Methyl Ether ◽  
Crystalline Form ◽  
Crystalline Material ◽  
Chromatographic Behavior ◽  
Estradiol 17Β

Estradiol-17β-3-methyl ether has been prepared in crystalline form from the phenolic steroid fraction of hen's urine and characterized by its melting point, the melting point of its acetate, and the chromatographic behavior of the crystalline material, of its acetate, and of its benzoate in each of three different thin-layer chromatographic systems.The method of Brown has been modified to render it more specific for the determination of estradiol-17β in hen's urine. Values for the estradiol-17β content of the urine of laying and nonlaying hens are reported.

Influence of Electron Injection Rate in Triphenylamine Based Dye for Dye-Sensitized Solar Cells: A First Principle Study

2019 ◽  
Vol 233 (9) ◽  
pp. 1247-1259
Author(s):  
Madhu Prakasam
Keyword(s):  
Solar Cells ◽  
Absorption Spectra ◽  
Density Functional ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Electron Injection ◽  
Injection Rate ◽  
Visible Absorption ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Abstract In this work, we systematically investigate the impacts of electron-donor based on Triphenylamine (TPA). The Geometry structure, energy levels, light-harvesting ability and ultraviolet-visible absorption spectra were calculated by using Density Functional Theory (DFT) and Time-Dependent-DFT. The electron injection rate of the TPA-N(CH3)2 based dyes has 0.71 eV for high among the dye sensitizer. The First and Second order Hyperpolarizability of the 11.95 × 10−30 e.s.u and 12195.54 a.u, respectively for TPA-N(CH3)2 based dye. The calculated absorption spectra were showed in the ultra-violet visible region for power conversion region. The study reveals that the electron transfer character of TPA-N(CH3)2 based dyes can be made suitable for applications in Dye-Sensitized Solar Cells.

scholarly journals Synthetic utility of 5-amino-6-cyano-2-phenylthieno[2,3-d] oxazole

2005 ◽  
Vol 70 (11) ◽  
pp. 1249-1253 ◽  
Author(s):  
V.R. Kanetkar ◽  
R.R. Walavalkar
Keyword(s):  
Ir Spectroscopy ◽  
Absorption Spectra ◽  
Polyester Fabric ◽  
Disperse Dyes ◽  
Fastness Properties ◽  
Visible Absorption ◽  
Synthetic Utility ◽  
Azo Disperse Dyes

This paper describes the synthesis of 5-amino-6-cyano-2-phenylthieno[ 2,3-d]oxazole and its utilization for the preparation of a range of azo disperse dyes. These aryl azo disperse dyes were applied on polyester fabric and their fastness properties were evaluated. The dyes were characterized by NMR and IR spectroscopy. The visible absorption spectra of these dyes were Recorded.

The visible absorption spectra of Mn2, Fe2, and Ni2 in argon matrices

1975 ◽  
Vol 35 (1) ◽  
pp. 78-81 ◽  
Author(s):  
T.C. De Vore ◽  
A. Ewing ◽  
H.F. Franzen ◽  
V. Calder
Keyword(s):  
Absorption Spectra ◽  
Visible Absorption ◽  
Argon Matrices

Simulation of the UV/Visible Absorption Spectra of Fluorescent Protein Chromophore Models

ChemPhotoChem ◽  
2017 ◽  
Vol 1 (6) ◽  
pp. 281-296 ◽  
Author(s):  
Freddy Zutterman ◽  
Vincent Liégeois ◽  
Benoît Champagne
Keyword(s):  
Absorption Spectra ◽  
Fluorescent Protein ◽  
Visible Absorption ◽  
Uv Visible
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