On March 22, 2022, Litak, Nicholas P.; Mawby, Lillian M.; Lear, Benjamin J. published an article.Category: alcohols-buliding-blocks The title of the article was Surface Chemistry Controls the Density of States in Metallic Nanoparticles. And the article contained the following:
Ligand-stabilized colloidal metallic nanoparticles are prized in science and technol. for their electronic properties and tunable surface chem. However, little is known about the interplay between these two aspects of the particles. A particularly glaring absence concerns the d. of electronic states, which is fundamental in explaining the electronic properties of solid-state materials. In part, this absence owes to the difficulty in the exptl. determination of the parameter for colloidal systems. Herein, we demonstrate the d. of electronic states for metallic colloidal particles can be determined from their magnetic susceptibility, measured using NMR spectroscopy. For this study, we use small alkanethiolate protected gold nanoparticles and demonstrate that changes in the surface chem., as subtle as changes in alkane chain length, can result inasmuch as a 3-fold change in the d. of states at the Fermi level for these particles. This suggests that surface chem. can be a powerful tool for controlling the electronic behavior of the materials to which they are attached, and suggests a paradigm that could be applied to other metallic systems, such as other metal nanoparticles, doped semiconductor systems, and even 2D metals. For all of these metallic systems, the Evans method can serve as a simple means to probe the d. of states near the Fermi level. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Category: alcohols-buliding-blocks
The Article related to gold nanoparticle dos surface chem, nmr, density of states, electronic bands, gold, ligands, magnetic susceptibility, nanoparticles, Surface Chemistry and Colloids: Solid-Solid Systems and other aspects.Category: alcohols-buliding-blocks
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