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Sauvage, Severine,Samson, Emilie,Granger, Melanie,Majumdar, Anisha,Nigam, Poonam,Nahar, Lutfun,Celik, Sezgin,Sarker, Satyajit D. Kyung Hee Oriental Medicine Research Center 2010 Oriental pharmacy and experimental medicine Vol.10 No.4
Scutellaria pinnatifida A. Hamilt. (Lamiaceae) is an endemic Turkish herb. This plant is also endemic to Iran, and grows abundantly in other central and western Asian countries. Several species of the Scutellaria are known for their traditional uses in the treatment of hypertension, arteriosclerosis, inflammatory diseases, hepatitis, allergy, cancer and diarrhoea. Free-radical-scavenging property, antibacterial activity and brine shrimp toxicity of the n-hexane, dichloromethane (DCM) and methanol (MeOH) extracts of S. pinnatifida were assessed using the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assay, the resazurin microtitre plate based assay, and the brine shrimp lethality assay, respectively. The DCM and MeOH extracts exhibited free-radical-scavenging property, with the $RC_{50}$ values of 0.362 and 0.127 mg/ml, respectively. Among the solid-phase extraction fractions of the MeOH extract, the 50% aqueous-MeOH fraction showed the highest level of free-radicalscavenging activity ($RC_{50}$ = 0.039 mg/ml). While the DCM extract showed low level of antibacterial activity against Bacillus subtilis and ampicillin-resistant Escherichia coli, the MeOH extract was active against B. cereus, B. subtilis, E. coli and ampicillin-resistant E. coli. However, the minimum inhibitory concentrations (MIC) of the MeOH extract against these bacterial strains were >10 mg/ml. None of the extracts showed any significant toxicity towards brine shrimps ($LD_{50}$ = > 1.00 mg/ml).
Severine Sauvage,Emilie Samson,Melanie Granger,Anisha Majumdar,Poonam Nigam,Lutfun Nahar,Sezgin Celik,Satyajit D. Sarker 경희대학교 융합한의과학연구소 2010 Oriental Pharmacy and Experimental Medicine Vol.10 No.4
Scutellaria pinnatifida A. Hamilt. (Lamiaceae) is an endemic Turkish herb. This plant is also endemic to Iran, and grows abundantly in other central and western Asian countries. Several species of the Scutellaria are known for their traditional uses in the treatment of hypertension, arteriosclerosis,inflammatory diseases, hepatitis, allergy, cancer and diarrhoea. Free-radical-scavenging property,antibacterial activity and brine shrimp toxicity of the n-hexane, dichloromethane (DCM) and methanol (MeOH) extracts of S. pinnatifida were assessed using the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assay, the resazurin microtitre plate based assay, and the brine shrimp lethality assay,respectively. The DCM and MeOH extracts exhibited free-radical-scavenging property, with the RC50 values of 0.362 and 0.127 mg/ml, respectively. Among the solid-phase extraction fractions of the MeOH extract, the 50% aqueous-MeOH fraction showed the highest level of free-radicalscavenging activity (RC50 = 0.039 mg/ml). While the DCM extract showed low level of antibacterial activity against Bacillus subtilis and ampicillin-resistant Escherichia coli, the MeOH extract was active against B. cereus, B. subtilis, E. coli and ampicillin-resistant E. coli. However, the minimum inhibitory concentrations (MIC) of the MeOH extract against these bacterial strains were >10 mg/ml. None of the extracts showed any significant toxicity towards brine shrimps (LD50 = > 1.00 mg/ml).
Abbotto, Alessandro,Sauvage, Frederic,Barolo, Claudia,De Angelis, Filippo,Fantacci, Simona,Graetzel, Michael,Manfredi, Norberto,Marinzi, Chiara,Nazeeruddin, Mohammad K. Royal Society of Chemistry 2011 Dalton transactions Vol.40 No.1
<P>The first example of a heteroarylvinylene π-conjugated quaterpyridine Ru(<SMALL>II</SMALL>) sensitizer (N1044) was synthesized and used in dye-sensitized solar cells; the dye has an effective panchromatic absorption band, covering the entire visible spectrum up to the NIR region, and superior electrochemical characteristics (HOMO/LUMO and bandgap energies) with respect to previous representative Ru(<SMALL>II</SMALL>) bi- and quaterpyridine sensitizers. A record IPCE curve ranging from 360 to 920 nm has been measured with a maximum of 65% at 646 nm and still 33% efficiency at 800 nm; this leads to substantially increased photocurrent (19.2 mA cm<SUP>−2</SUP>) when compared to the prototype N719 Ru(<SMALL>II</SMALL>) sensitizer.</P> <P>Graphic Abstract</P><P>The first heteroarylvinylene π-conjugated quaterpyridine Ru(<SMALL>II</SMALL>) sensitizer is reported; the dye has an effective panchromatic response through the visible and NIR, delivering high photocurrent when employed in dye-sensitized solar cells. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0dt01190h'> </P>
Elaboration and Characterization of Cu/Co Multilayered Nanowires
Julien Bran,Malick Jean,Rodrigue Lard´e,Xavier Sauvage,Jean-Marie Le Breton,Alain Pautrat 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Multilayered Cu/Co nanowires were elaborated by a low cost electrochemical technique consistingin reducing alternatively the Cu2+ and Co2+ ions, through a porous commercial anodic aluminumoxide template, onto a conductive substrate. The deposition parameters were determined fromcurrent-potential curves. The structure of the nanowires was characterized down to the atomicscale by transmission electron microscopy and atom probe tomography. The results show that themultilayers are polycrystallized with a nanometric grain size. The Cu layers are almost pure, whilethe Co ones consist in a Co-rich alloy with about 12 to 15% Cu.
Donor–acceptor molecular figures-of-eight
Boyle, Megan M.,Forgan, Ross S.,Friedman, Douglas C.,Gassensmith, Jeremiah J.,Smaldone, Ronald A.,Stoddart, J. Fraser,Sauvage, Jean-Pierre Royal Society of Chemistry 2011 Chemical communications Vol.47 No.43
<P>The intermolecular template-directed synthesis, separation and characterisation of two constitutional isomers that are self-complexing donor–acceptor [1]rotaxanes has been achieved by click chemistry, starting from a π-electron deficient tetracationic cyclophane containing two azide functions and a π-electron rich 1,5-dioxynaphthalene-containing polyether chain terminated by propargyl groups.</P> <P>Graphic Abstract</P><P>The intermolecular template-directed synthesis, separation and characterisation of two constitutional isomers that are self-complexing donor–acceptor [1]rotaxanes has been achieved by click chemistry. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1cc15333a'> </P>