e707004304
ORANGE EKSTRAKLASA
Dołączył: 17 Gru 2010
Posty: 612
Przeczytał: 0 tematów
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Skąd: England
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 Wysłany: Pią 23:36, 11 Lut 2011 |
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Gallium Phosphide Nanoparticles adsorbed on the surface Raman spectra of fuchsin
Cbond; thedyemoleculeslyingperpendiculartotheGaPsurfaceareattachedthroughconjugationtotheatomsontheGaPsurface. 3CONCLUSIONSThevibrationalchangesoccurringintheSERSspectrumforfuchsinbasicadsorbedonthesurfaceoftheGaPnanoparticlesareevidenceforaninteractionbetweenthedyemoleculesandtheadsorbent. FromthechangesintheRamanscat-teringintensityoftheSRESspectrum, itcanbeinferredthattheimportantsitesofinteractionarethecentralcarboniumionandnitrogen. Thefactthattheappearanceofnewpeaksandintensityenhancementinthewavenumberregionrangingfromabout1200to1320cm_. showsthatP-O-CorGa-O-Cbondmightbeformed. Thebondisgeneratedfromthesharingelectrone-tweenthecentralcarboniumionandoxygenatomwithtwoelectronpairsontheGaPsurface. Theincreasesofthesurfacescatteringintensityforthebreathingmodeoftheentiremolecule, N-phenylstretchingandringC - Cstretchingmodesareobservedsimultaneously. Forthedyemoleculestherearetwomainconfigurationsadopted: flatandend-on, judgingfromthechangesoccurringinthevibrationsinvolvinginthecarboniumionandnitrogen. REFERENCES: [1] [7] HayashiS. KohR,[link widoczny dla zalogowanych], IchiyamaY, andYa-mamotoK. Phys. Rev. Lett. 1988,60:1085. CDL. I-IaoXP, YuXQ,[link widoczny dla zalogowanych], ShGX,[link widoczny dla zalogowanych], XuXG, JiangMH. ScienceinChina (SeriesB). 2001,31:451. PersandIandGrossmanWEL. J. RamanSpectrosc. 1993.24:107. GicquelJ, CariesM,[link widoczny dla zalogowanych], andBodotH. J. Phys. Chem. 1979,83:699. MoskovimM,[link widoczny dla zalogowanych], SuhJS. J. Phys. Chem. 1984,88:5526. Hilderbran & P. KdlerS, HoffmanA, VaJ1 a heckeF. SchraderB. J. RamanSpectrosc. 1993,24:791. WaldronRDandHornigDF. J. Am. Chem. Soc. 1953,75:6079. HopkinsonACandWyattPAH. J. Chem. Soc. (B). 1970,530. * 335 *
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