2 resultados para Pteridium aquilinum (L .) Kuhn.

em Chinese Academy of Sciences Institutional Repositories Grid Portal


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Pteridium Gled. ex Scop rps4-trnS DNAtrnS-G DNA1;2evolutionary lineages;3;4;5;6 Network Pteridium aquilinum (L.) Kuhn8Pteridium esculentum (G. Forst.) CokaynePteridium caudatum (L.) MaxonPteridium semihastatum (Wall. ex Ag.) S.B.Andrews [Pteridium aquilinum (L.) Kuhn subsp.japonicum (Nakai) .Lve & D.Lve][Pteridium aquilinum (L.) Kuhn subsp. revolutum (Bl.) X. Q. Chen, stat. nov.] 8

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The adsorption Of DL-homocysteine (Hcy) and L-homocysteine thiolactone (HTL) on Au(1 1 1) electrode was investigated in 0.1 M HClO4 by cyclic voltammetry and in situ scanning tunneling microscopy (STM). Hcy and HTL molecules formed highly ordered adlayers on Au(1 1 1) surface. High-resolution STM images revealed the orientation and packing arrangement in the ordered adlayers. Hcy molecules formed (2root3 x 3root3)R30degrees adlayer structure and H-bonds between carboxyl groups were assumed to be responsible for the origin of tail-to-tail or head-to-head molecular arrangement, while HTL molecules formed (4 x 6) adlayer structure, and two different orientations and appearances in the ordered adlayer were found. Structural models were proposed for the two adlayers.