Methylation of [76]fullerene and [84]fullerenes; the first oxahomo derivatives of a higher fullereneElectronic supplementary information (ESI) available: HPLC separation data (Table S1) and calculated heats of formation (Table S2). See http://www.rsc.org/suppdata/ob/b3/b316163c/

2004 ◽  
Vol 2 (9) ◽  
pp. 1364 ◽  
Author(s):  
Adam D. Darwish ◽  
Natalia Martsinovich ◽  
Roger Taylor
Keyword(s):  
Heats Of Formation ◽  
Supplementary Information ◽  
Hplc Separation ◽  
Data Table ◽  
Derivatives Of

HPLC separation of hydrogenated derivatives of buckminsterfullerene

1998 ◽  
Vol 48 (1-2) ◽  
pp. 59-64 ◽  
Author(s):  
I. Bucsi ◽  
P. Szabó ◽  
R. Aniszfeld ◽  
G. K. Surya Prakash ◽  
G. A. Olah
Keyword(s):  
Hplc Separation ◽  
Derivatives Of

scholarly journals Computational Study on Substituteds-Triazine Derivatives as Energetic Materials

2012 ◽  
Vol 9 (2) ◽  
pp. 583-592 ◽  
Author(s):  
Vikas D. Ghule ◽  
S. Radhakrishnan ◽  
Pandurang M. Jadhav ◽  
Surya P. Tewari
Keyword(s):  
Thermal Stability ◽  
Energetic Materials ◽  
Density Functional ◽  
Crystal Packing ◽  
Computational Study ◽  
Heats Of Formation ◽  
Dissociation Energies ◽  
The Density Functional Theory ◽  
Triazine Derivatives ◽  
Derivatives Of

s-Triazine is the essential candidate of many energetic compounds due to its high nitrogen content, enthalpy of formation and thermal stability. The present study explores s-triazine derivatives in which different -NO2, -NH2and -N3substituted azoles are attached to the triazine ring via C-N linkage. The density functional theory is used to predict geometries, heats of formation and other energetic properties. Among the designed compounds, -N3derivatives show very high heats of formation. The densities for designed compounds were predicted by using the crystal packing calculations. Introduction of -NO2group improves density as compared to -NH2and -N3, their order of increasing density can be given as NO2>N3>NH2. Analysis of the bond dissociation energies for C-NO2, C-NH2and C-N3bonds indicates that substitutions of the -N3and -NH2group are favorable for enhancing the thermal stability ofs-triazine derivatives. The nitro and azido derivatives of triazine are found to be promising candidates for the synthetic studies.

scholarly journals Characterization of Purified Red Cabbage Anthocyanins: Improvement in HPLC Separation and Protective Effect against H2O2-Induced Oxidative Stress in HepG2 Cells

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 124 ◽  
Author(s):  
Sheng Fang ◽  
Fubin Lin ◽  
Daofeng Qu ◽  
Xianrui Liang ◽  
Liping Wang
Keyword(s):  
Oxidative Stress ◽  
Hepg2 Cells ◽  
Antioxidant Activities ◽  
Hplc Separation ◽  
Column Temperature ◽  
Red Cabbage ◽  
Chemical Profiles ◽  
Derivatives Of ◽  
Intracellular Oxidative Stress

In this study, the chemical profiles and antioxidant activities of red cabbage anthocyanin (RCA)-enriched extract are evaluated. The effects of column temperature on the HPLC resolution of the RCAs are studied. The HPLC resolutions became better as the column temperature increased from 20 °C–45 °C. An optimized HPLC condition was achieved at 45 °C and used for the quantification and qualification of the RCAs. The anthocyanins in the enriched powder are all derivatives of cyanidin (268 ± 2 μg/mg), mainly with 19% nonacylated, 51% monoacylated, and 31% diacylated structures with ferulic, sinapic, p-coumaric, and caffeic acids characterized by HPLC-MS. The RCA extracts markedly reduced intracellular oxidative stress production by H2O2 on HepG2 cells and consequently ameliorated cell apoptosis and improved viability. The analytical method and cellular antioxidant activity demonstration of the RCAs will greatly facilitate their functional applications.

A study of HPLC separation and spectrophotometric, polarographic and voltammetric detection of 4-substituted derivatives of N-nitroso-N-methylaniline

1994 ◽  
Vol 350 (12) ◽  
pp. 678-683 ◽  
Author(s):  
Jiří Barek ◽  
Pham Tuan Hai ◽  
Věra Pacáková ◽  
Karel Štulík ◽  
Ivana Švagrová ◽  
...  
Keyword(s):  
Hplc Separation ◽  
Voltammetric Detection ◽  
Derivatives Of
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