253-52-1, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 253-52-1, Name is Phthalazine, molecular formula is C8H6N2. In a Article, authors is Moskovits, M.£¬once mentioned of 253-52-1
Surface Slection rules for Surface-Enhanced Raman-Spectroscopy: Calculations and Application to the Surface-Enhanced Raman Spectrum of Phthalazine on Silver
The “surface selection rules”, i.e., the modification ofthe band intensities of a spectrum due to the proximity of the carrier to a surface, which are pertinent to surface-enhanced Raman are considered for the case of a molecule adsorbed on a metalsphere asa model.One concludes that there are three types of bands in the spectrum classed according to the Raman polarizability components which contribute strongly to them. each type is characterized by its own SER excitation spectrum.It is also shown that in the spectral region between the bulk and surface plasma resonance frequencies of the sphere the electric field component parallel to the surface of the illuminated colloid particle may exceed the normal compoonent.Calculations illustrating these points are presented as are experimental results obtained from the SER spectrum of the phthalazine adsorbed on aqueous silver sol.The ratio of the intensities of a1 modes and b2 modes are shown to fit the ratio calculated on the basis of the electromagnetic model, provided one modifies the latter suitably to shift the surface plasma frequency to the red in order to take into account the effect colloid aggregation.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. 253-52-1, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 253-52-1, in my other articles.
Reference£º
Phthalazine – Wikipedia,
Phthalazine | C8H6N299 – PubChem