Flash column chromatograms estimated from thin-layer chromatography data

Fair, Justin D.; Kormos, Chad M.

doi:10.1016/j.chroma.2008.09.085

Cited by 40 publications

(37 citation statements)

References 12 publications

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“…Perylene red (generously gifted by BASF, Lumogen Red 305) was first used as received with a purity of only 90% (checked by spectroscopic and chromatographic methods). The dye purity was improved up to 99% by means of flash column chromatography [30] based on silica with hexane/ethyl acetate (95:5 v/v) as eluent, to remove the N-methyl-2-pyrrolidone, identified by 1 H NMR spectroscopy as the principal impurity. Solvents for laser studies were of spectroscopic grade (Merck, Aldrich, or Sigma) and were used without purification.…”

Section: Methodsmentioning

confidence: 99%

Materials for a Reliable Solid‐State Dye Laser at the Red Spectral Edge

García‐Moreno

Costela

Martín

et al. 2009

Adv Funct Materials

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In the search to extend the tuning range of solid‐state dye lasers (SSDLs) to the red‐edge spectral region, new photosensitive materials have been designed and synthesized based on six commercial dyes (sulforhodamine B, perylene red, rhodamine 640, LDS698, LDS722, and LDS730) incorporated into different linear, crosslinked, fluorinated, and sililated polymeric matrices. Under transversal pumping at 532 nm, these materials exhibit highly efficient, stable, as well as wavelength‐tunable laser action from the visible‐to‐NIR spectral region (575–750 nm). The lasing performance of the materials doped with perylene and xanthene dyes is, to the best of our knowledge, the highest achieved to date for these chromophores when incorporated into organic, inorganic, or hybrid matrices. Regarding the LDS derivatives, this is the first time that laser action from these dyes in solid‐state media is reported. These particular characteristics have impelled the building of the first prototype SSDL that is compact, versatile, and easy to handle.

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Section: Methodsmentioning

confidence: 99%

Materials for a Reliable Solid‐State Dye Laser at the Red Spectral Edge

García‐Moreno

Costela

Martín

et al. 2009

Adv Funct Materials

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“…[12] There is a variety of commercial flash chromatography instruments on the market, equipped with solvent pumps, manually packed columns or prepacked cartridges, detectors connected with microcomputers, and automatic fraction collectors. [12,13] Flash chromatography can endure relatively high flow rate with low pressure, offering good separation in a short time at a proper chromatographic condition. [14] In this paper, we reported a method for preparative isolation of tetrandrine and fangchinoline using reversed-phase flash chromatography.…”

Section: Radixmentioning

confidence: 99%

PREPARATIVE ISOLATION OF TETRANDRINE AND FANGCHINOLINE FROM RADIX STEPHANIA TETRANDRA USING REVERSED-PHASE FLASH CHROMATOGRAPHY

Xie

et al. 2013

Journal of Liquid Chromatography & Related Technologies

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& Tetrandrine and fangchinoline were successfully separated by reversed-phase flash chromatography on a manually-packed C 18 column from Radix Stephania tetrandra. After recrystallization by acetone, 13 mg of fangchinoline and 21 mg of tetrandrine were obtained from 100 mg Stephania tetrandra extract, with their relative content 98.78% and 98.19%, respectively. Their structures were characterized by UV, IR, MS, and NMR. The established method was simple, fast, and reproducible, which can be applied to the preparation of reference substances of tetrandrine and fangchinoline.

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“…Evaporation of water by rotary evaporator was done to dryness of the samples. Weight of dried 20 urine samples was thus obtained (5.7 gm) and preserved for column chromatography [19][20][21][22] .…”

Section: Isolation and Seperation Of Cisplatin And Its Metabolites Frmentioning

confidence: 99%