A novel methodology, based on the use of phosphorescence imaging, is applied to determine the local through-thickness velocity profile of lubricant in an elastohydrodynamic contact. The technique has spatial and temporal resolutions of 40 μm and 340 μs respectively and thus allows lubricant rheology to be investigated at conditions close to service conditions. The capability of the newly-develo...

We report on the collapsing and reswelling ability of grafted poly(methyl vinyl ether) chains of different molecular architectures. In order to study the influence of constraints and confinement of the chains, the polymer was grafted onto AFM tips, as a model of a curved nano-sized surface, and onto macroscopic silicon substrates for comparison purposes. AFM-based force spectroscopy experiments...

Chemical bond breaking and formation during chemical reactions can be observed using "transition state spectroscopy". Comparing the measurement result of the transition state spectroscopy with the simulation result of single direct-dynamics trajectory, we have elucidated the reaction dynamics of Claisen rearrangement of allyl vinyl ether. Observed the reaction of the neat sample liquid, we have...

METHYL N-PIqOPYL ETHER was first described by Chancel in 1869, but its valuable anaesthetm properties were not apprecmted unlal its inclusion in the long senes of ethers tested by Krantz and has co-workers m the United States. The clinical trials of methyl n-propyl ether fol/owing Krantz's original description of its anaesthetic properties and pharmacology m 1946 (1) showed that it might be sup...

The photooxidation of diethyl ether (C2H5OC2H5) and diisopropyl ether, (CH3)2CHOCH(CH3)2, in the presence of NOx was studied at the European Photoreactor (EUPHORE) in May 1998. The main objective of the experiments was to validate the degradation mechanisms that are based on data obtained from laboratory photoreactor studies. For diisopropyl ether, the experiments provided product yield data th...

Two supramolecular coordination polymers, [HgI2(L )·0.5H2O]∞ (1) and [HgI2(L )·0.4CH3OH]∞ (2), have been prepared by ligands L 1 (L = bis[4-(4pyridylmethyleneamino)phenyl] ether) and L (L = N,N′-bis(3-pyridylmethyl)-diphthalic diimide) with HgI2, respectively. 1 formed an interestingly infinite cross-linked double helical structure, whereas 2 formed the one-dimensional zigzag chains, which are ...

IN THE TITLE COMPOUND (SYSTEMATIC NAME 17-formyl-2,5,8,11,14-penta-oxabicyclo-[13.4.0]nona-deca-15,17,19-triene), C(15)H(20)O(6), the 15-crown-5 ring adopts a twisted conformation. The formyl group is coplanar with the benzene ring. The crystal packing is stabilized by C-H⋯O inter-actions involving the C=O group and ether O atoms as acceptors and methyl-ene CH groups as donors.