We report a real-space visualization of the formation of hydrogen bonding in 8-hydroxyquinoline (8-hq) molecular assemblies on a Cu(111) substrate, using noncontact atomic force microscopy (NC-AFM). The atomically resolved molecular structures enable a precise determination of the characteristics of hydrogen bonding networks, including the bonding sites, orientations, and lengths. The observati...

A brief review of the recent experimental verifications of the Casimir force between extended bodies is presented. With modern techniques, it now appears feasible to test the force law with precision better than 1%; I will address the issues relating to the theoretical interpretation of experiments at this level of accuracy.

Experiments on 4He films reveal an attractive Casimir-like force at the bulk lambda point and in the superfluid regime. Previous work has explained the magnitude of this force at the lambda transition and deep in the superfluid region but not the substantial attractive force immediately below the lambda point. Utilizing a simple mean-field calculation renormalized by critical fluctuations we ob...

Short-range repulsion within intermolecular force fields is conventionally described by either Lennard-Jones (A/r(12)) or Born-Mayer (A exp(-Br)) forms. Despite their widespread use, these simple functional forms are often unable to describe the interaction energy accurately over a broad range of intermolecular distances, thus creating challenges in the development of ab initio force fields and...

The multiple-minima problem is a classical problem in molecular structure prediction. For ligand-receptor systems, a possible direction to alleviate this major obstacle is to simplify the objective function (intermolecular energy) and smooth its profile. We introduce long-distance atom-atom potentials for ligand-receptor interactions. The longer ranges result in averaging of the energy potentia...

By considering the fact that the surface tension of a real fluid arises from a combination of both repulsive and attractive forces between molecules, a new expression for the interfacial tension has been derived from scaled particle theory (SPT)  based on the work of cavity formation and the interaction energy between molecules. At the critical temperature, the interfacial tension between c...

Dissociation under ultrashort intense laser fields differs from the process occurring in the presence of a weak field by two main characteristics. In the strong field regime, the force exerted by the laser on the molecule is comparable to the intermolecular forces. In addition, this force is varying on a time scale comparable to that of the molecular vibration. The combination of these two effe...

Abstract An efficient intermolecular C−H aminohalogenation of indoles with azoles and NXS (X = F, Cl, Br, I) has been developed. This mild protocol provides a straightforward entry to structurally valuable 2‐azolyl‐3‐halogenated in one single operation. In addition, this attractive route for the synthesis polyfunctionalized is great significance due product's versatile reactivity further transf...