Controlling and predicting the long-lived room-temperature phosphorescence (RTP) from organic materials are next challenges to address for realization of new efficient RTP systems. Here, a approach is developed reach these objectives by considering host–guest doped crystals, as well-suited model systems in that they allow comprehensive understanding synergetic structural interactions between cr...

Liquid chromatography (LC) may be simply described as an analytical technique used to separate the individual components of a solution based on their relative afRnities for a liquid mobile phase and a stationary phase. There are numerous modes of LC (i.e. reversed-phase, normal-phase, ion exchange) that are commonly classiRed according to the mechanism by which separation occurs. One such mecha...

This work presents a systematic study on the host-guest interactions between the macrocyclic host molecule cucurbit[7]uril (CB[7]) and amino acids (AAs) including three basic AAs (Lys, Arg, and His) and three aromatic AAs (Phe, Tyr, and Trp) to elucidate the origin of the high selectivity of CB[7] toward AA residues in proteins. Complex formation between CB[7] and each AA was examined in soluti...

The standard picture is that clathrate hydrates form when hydrophobic guest molecules are compressed with water under high pressure-low temperature conditions. In the ice-like hydrate framework, water molecules form molecule-sized cavities that encapsulate the guests and minimize water-hydrophobic guest interactions. This picture, however, must be modified by observations that many water solubl...

The crystalline sponge method is a technique that provides the ability to elucidate absolute structure of noncrystalline or hard crystallize compounds through single-crystal X-ray diffraction by removing need obtain crystals target compound. In this study sponges {[(ZnX2)3(2,4,6-tris(4-pyridyl)-1,3,5-trazine)2].x(solvent)}n (X = I, Br) were used structures agrochemical active ingredients metala...

A chiral molecular gelation system, as a host, was used to effectively realize enantioselectivity using the simple carboxylic acid functional group. For this purpose, an L-glutamic-acid-based lipidic amphiphile (G-CA) with head group selected and its responsiveness cationic guest molecules investigated. The dispersion morphology of G-CA in solution state examined by confocal transmission electr...

Single-crystal x-ray diffraction from clathrate-II Na(x)Si(136) (x = 24) prepared by a new technique reveals the exceptionally large Na@Si(28) atomic displacement parameter (U(eq)) is strongly temperature dependent, and can be attributed to low-energy rattling modes associated with the Na guest. Inelastic neutron scattering (INS) spectra collected from Na(x)Si(136) powder specimens (x = 3, 23) ...