Charge Transport Across Dynamic Covalent Chemical Bridges was written by Miao, Zelin;Quainoo, Timothy;Czyszczon-Burton, Thomas M.;Rotthowe, Nils;Parr, Joseph M.;Liu, Zhen-Fei;Inkpen, Michael S.. And the article was included in Nano Letters in 2022.Formula: C7H9NS This article mentions the following:
Relationships between chem. structure and conductivity in ordered polymers (OPs) are difficult to probe using bulk samples. We propose that conductance measurements of appropriate mol.-scale models can reveal trends in electronic coupling(s) between repeat units that may help inform OP design. Here, we apply the scanning tunneling microscope-based break-junction (STM-BJ) method to study transport through single-mols. comprising OP-relevant imine, imidazole, diazaborole, and boronate ester dynamic covalent chem. bridges. Notably, solution-stable boron-based compounds dissociate in situ unless measured under a rigorously inert glovebox atm. We find that junction conductance neg. correlates with the electronegativity difference between bridge atoms, and corroborative first-principles calculations further reveal a different nodal structure in the transmission eigenchannels of boronate ester junctions. This work reaffirms expectations that highly polarized bridge motifs represent poor choices for the construction of OPs with high through-bond conductivity and underscores the utility of glovebox STM-BJ instrumentation for studies of air-sensitive materials. In the experiment, the researchers used many compounds, for example, 4-(Methylthio)aniline (cas: 104-96-1Formula: C7H9NS).
4-(Methylthio)aniline (cas: 104-96-1) belongs to thiazole derivatives. Thiazoles frequently appear in peptide studies. Thiazoles can also be used as protected formyl groups, which can be released in later stages of complex natural product synthesis. Thiazole sulfonation occurs only under forcing conditions: the action of oleum at 250 °C for 3 hours in the presence of mercury(II) sulfate leads to 65% formation of 5-thiazole sulfonic acid.Formula: C7H9NS
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica