An inert Pt(II)âpyridine bond is considerably labilized upon UV irradiation. On the basis of this phenomenon, kinetically inert Pt(II)-linked coordination rings and cages are formed in high yields from their components by obtaining a kinetically distributed mixture and subsequently equilibrating the mixture into the thermodynamically stable structures upon temporary photolabilization. This method is applicable when the pyridine rings in the ligands are not conjugated with other aromatic rings, in good agreement with DFT calculations that indicate the dependency of the photolability on the Ï-conjugation of the ligand frameworks. Interruption of Ï-conjugation either by introducing an methylene linker or by twisting the aromatic rings are effective to accomplish the photo-induced self-assembly.
The present invention provides for novel metallacycles and processes for making the same.
本发明提供了一种新型金属环化合物和制备方法。
WATER CAPTURE METHODS, DEVICES, AND COMPOUNDS
申请人:University of Limerick
公开号:US20200030737A1
公开(公告)日:2020-01-30
A method of capturing water from a gaseous composition comprising water vapour (e.g., air), the method comprising:
(a) providing a metal-organic material; and
(b) contacting the metal-organic material with water and/or water vapour;
wherein upon contact with water and/or water vapour the material switches from a first state to a second state wherein the second state is able to retain a higher amount of water than the first state.
zene (1), with cadmium nitrate afforded an infinite ladder complex, the unit structure of which involves a T-shaped assembly of three pyridine rings about a heptacoordinated CdII atom. The ladder structure was found to expand its cavity volume by enclathrating p-dibromobenzene in the cavity. Nearly orthogonal interpenetration of infinite ladders was observed in the solid structure.
Optical Film and Method for Manufacturing the Same
申请人:Yamahara Motohiro
公开号:US20090104378A1
公开(公告)日:2009-04-23
This invention provides an optical film, which can freely regulate the tilt angle and can easily be manufactured without simultaneously regulating polymerization and mixing, and a method for manufacturing the same. The optical film is a film having birefringence. The film has been produced by association through an intermolecular hydrogen bond between at least two compounds having a refractive index anisotropy-providing structure and a proton-receptive group and at least one compound having a refractive index anisotropy-providing structure and a proton-providing group. The method for manufacturing the optical film comprises mixing at least two compounds having a refractive index anisotropy-providing structure and a proton-receptive group with at least one compound having a refractive index anisotropy-providing structure and a proton-providing group and forming a film from the mixture on an aligning film.