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|Title:||Tetra-σ attachment of allyl cyanide on Si(111)-7×7|
|Source:||Tao, F.,Dai, Y.J.,Xu, G.Q. (2002-07-15). Tetra-σ attachment of allyl cyanide on Si(111)-7×7. Physical Review B - Condensed Matter and Materials Physics 66 (3) : 354201-354207. ScholarBank@NUS Repository.|
|Abstract:||The investigation of allyl cyanide adsorption on Si(111)-7×7 using high-resolution electron-energy-loss spectroscopy (HREELS), x-ray photoelectron spectroscopy (XPS), and ultraviolet photoelectron spectroscopy (UPS) reveals a tetra-σ binding mode through two [2 + 2]-like cycloaddition reactions. The HREELS spectra of chemisorbed monolayer show the absence of C = C, C = N, and C(sp2)-H stretching modes coupled with the appearance of C=N stretching mode at ∼1590 cm-1, demonstrating that both the C = C and C≡N of allyl cyanide directly participate in binding with the surface to form C - C and C = N bonds, respectively. This binding configuration was further confirmed in our XPS and UPS studies. The imine-containing skeleton formed on the surface can possibly be employed as a molecular template for a further modification of Si surfaces and syntheses in vacuum.|
|Source Title:||Physical Review B - Condensed Matter and Materials Physics|
|Appears in Collections:||Staff Publications|
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