Electrochemistry of complex molecular and biomolecular scale entities

Structural mapping of intermediate size and large molecules and biomolecules at ultra-high resolution using single-crystal electrodes and in situ scanning tunnelling microscopy continues to disclose surprising findings. In situ scanning tunnelling spectroscopy has also recently disclosed new electrochemical conductivity features at the level of the single molecule. We overview briefly elements of this development over the last few years, with focus on three recent discoveries: (1) a new packing mode of a core monolayer target thiol, the amino acid cysteine (Cys) on Au(100)-electrodes, quite different from Cys packing on Au(111)- and Au(110)-electrodes; (2) transition of a core ferrocene in situ scanning tunnelling spectroscopy probe from stochastic single-molecule to macroscopic behaviour, a concept at the heart of nanoscience; and (3) unexpected behaviour of the large molybdenum enzyme sulfite oxidase, when going from macroscopic to single-molecule electrochemistry. We compare these studies with other recent discoveries of single-molecule protein conductivity and molecular scale inorganic nanostructures.     

Decakis(phenylthio)benzophenone: A Representative of a Novel Class of Host Molecule Comprised of Two Linked Persubstituted Aromatic Cores

Abstract

The title compound 1, prepared by reaction of decafluorobenzophenone 5 with PhSNa in DMEU, forms a 1:1 adduct with DMF; in this adduct the molecule's central V-shaped twin core possesses approximate C ₂ symmetry, though this does not extend to the molecular periphery owing to the ababababab side-chain orientational distribution [a, above core benzene plane; b, below]. The adduct crystallizes in the monoclinic space group P2 ₁/c with a = 16.559(3), b = 23.233(5), c = 18.640(4), Å, β = 114.49(3)° and D_c = 1.363 gcm^?3 for Z = 4. The refinement is based on 4621 observed reflections and gives a final R value of 0.069.     

Ignition of two-component and three-component fuel mixtures based on brown coal and char under slow heating conditions

Journal of Thermal Analysis and Calorimetry - The paper presents a comparison of combustion processes of two- and three-component fuel mixtures based on char and two brown coals with different...