According to recent findings, the steady shear viscosity of the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Emim][Tf2N]) decreases significantly under the influence of electric potential. This implies a causal connection between nanoscale ordering at the electrified interface and a macroscopic change of transport properties. To study this phenomenon in more deta...

This work deals with the determination, using equilibrium and nonequilibrium molecular dynamics, of the viscosity of an ionic liquid: 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]). A first method consists in computing the shear viscosity using the Green-Kubo formalism from the pressure tensor correlation function obtained from equilibrium simulations. On the other...

We are examining surface characteristics of ultraviolet pulsed-laser micromachined structures in polymide as a function of the incident laser energy and the distance between subsequent laser spots in order to prepare surfaces for laser direct-write deposition of metals. Variations in the spot-to-spot translation distance provide an alternative means of average depth and roughness control when c...

The effect of counterface roughness on the wear of conventional gamma-sterilized, and electron-beam-crosslinked ultrahigh molecular weight polyethylene was studied with a circularly translating pin-on-disk device. The counterfaces, CoCr disks, were either polished, or roughened so that they represented the type of roughening and the range of surface roughness values (R(a) = 0.014-0.24 microm) o...

The title compound, C(13)H(16)N(3)O(+)·PF(6) (-), which has an imide group in the imidazolium cation, is a new ionic liquid above its melting point. Two neighbouring mol-ecules are connected by a weak non-classical C-H⋯O hydrogen bond with the formation of centrosymmetric 14-membered dimers.

The preparation of a number of cyclic imide 5-HT(1A) receptor ligand derivatives has been described. Their structures were conformationally constrained by introducing rigid linkers containing unsaturated bonds or aromatic benzene rings. These compounds are expected to possess anxiolytic and antidepressant activity.

[formula: see text] [Cu(S,S)-t-Bu-box](OTf)2 (1) catalyzes the enantioselective amination of enolsilanes with azodicarboxylate derivatives. Isomerically pure enolsilanes of aryl ketones, acylpyrroles, and thioesters added to the azo-imide in greater than 95% ee. The use of an alcohol additive was critical to achieving catalyst turnover.