Synthesis of Group 14 Dipyridinometalloles with Enhanced Electron-Deficient Properties and Solid-State Phosphorescence
摘要:
Silicon- and germanium-bridged bipyridyls were prepared, and their optical and electrochemical properties were investigated. It was found that they exhibited enhanced electron deficiency and phosphorescence properties in comparison to parent bipyridyl. The single-crystal structure of a dipyridinosilole and results of DFT calculations on models are also described.
Side‐Group‐Mediated Mechanical Conductance Switching in Molecular Junctions
作者:Ali Khalid Ismael、Kun Wang、Andrea Vezzoli、Mohsin K. Al‐Khaykanee、Harry E. Gallagher、Iain M. Grace、Colin J. Lambert、Bingqian Xu、Richard J. Nichols、Simon J. Higgins
DOI:10.1002/anie.201709419
日期:2017.11.27
side‐group chemistry to control the properties of a single‐molecule electromechanical switch, which can be cycled between two conductance states by repeated compression and elongation. While bulky alkyl substituents inhibit the switching behavior, π‐conjugated side‐groups reinstate it. DFT calculations show that weak interactions between aryl moieties and the metallic electrodes are responsible for the