In 2019,Nanomaterials included an article by Lopez-Tocon, Isabel; Valdivia, Samuel; Soto, Juan; Otero, Juan Carlos; Muniz-Miranda, Francesco; Menziani, Maria Cristina; Muniz-Miranda, Maurizio. Recommanded Product: 100-48-1. The article was titled 《A DFT approach to the surface-enhanced Raman scattering of 4-cyanopyridine adsorbed on silver nanoparticles》. The information in the text is summarized as follows:
A Surface-Enhanced Raman Scattering (SERS) spectrum of 4-cyanopyridine (4CNPy) was recorded on silver plasmonic nanoparticles and analyzed by using D. Functional Theory (DFT) calculations Two simple mol. models of the metal-4CNPy surface complex with a single silver cation or with a neutral dimer (Ag+-4CNPy, Ag2-4CNPy), linked through the two possible interacting sites of 4CNPy (aromatic nitrogen, N, and nitrile group, CN), were considered. The calculated vibrational wavenumbers and intensities of the adsorbate and the isolated species are compared with the exptl. Raman and SERS results. The anal. of the DFT predictions and the exptl. data indicates that 4CNPy adsorbs preferentially on neutral/charged active sites of the silver nanoparticles through the nitrogen atom of the aromatic ring with a perpendicular orientation. After reading the article, we found that the author used 4-Cyanopyridine(cas: 100-48-1Recommanded Product: 100-48-1)
4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Recommanded Product: 100-48-1