Tsinghua University

Industrial Technology Research Institute

Chien-Wei Hsu

Yun Chi

Pi-Tai Chou

Cheng-Huei Lin

Jui-Yi Hung

I-Hsuan Pai

Shu-Hua Chan

Kuan-Lin Wu

Ying-Chieh Lee

Shu-Te Ho

Shih-Han Chang

Shen-Han Yang

Pao Tsern Lin

Hsin-Pei Wu

Jyun-Wei Hong

Cheng-Xuan Li

Ssu-Ting Lin

A method for degrading polyethylene terephthalate is provided. The method includes: providing polyethylene terephthalate material, providing a catalyst composite including a porous carrier having a pore size of 45 Å to 250 Å and a metal compound including at least one selected from a group consisting of zinc oxide, zinc hydroxide, zinc carbonate, magnesium oxide, calcium oxide, zirconium oxide, and titanium dioxide, in which the metal oxide is loaded on the porous carrier; and performing a degradation reaction, in which the polyethylene terephthalate material is reacted with the catalyst composite in the presence of an alcohol solvent.

Method for degrading polyethylene terephthalate

An organometallic complex, a catalyst composition employing the same, and a method for preparing polyolefin are provided. The organometallic compound has a structure represented by Formula (I) wherein M is Ti, Zr, or Hf; X is —O—, or —NR—; Rand Rare independently hydrogen, Calkyl group, Caryl group, or Rand Rare combined with the carbon atoms, to which they are attached, to form an Caryl moiety; R, Rand Rare independently fluoride, chloride, bromide, Calkyl group, Caryl group, Chetero aryl group, Caryl alkyl group or Calkyl aryl group; and Ris hydrogen, Caryl group or Calkyl aryl group.

Organometallic complex, catalyst composition employing the same, and method for preparing polyolefin

Disclosed is a 4,4'-dicarboxy-2,2&#x2032;-bipyridine derived tridentate ligand represented by formula (I): wherein definitions of Y, Y, and R are the same as those defined in the specification. Also disclosed are a metal complex containing the aforesaid tridentate ligand and a dye-sensitized solar cell containing the metal complex.

4,4'-dicarboxy-2,2&#x2032;-bipyridine derived tridentate ligand, metal complex containing the same, and application thereof

A 2-phenyl-6-azolylpyridine-based ligand is represented by the following formula (I):  wherein, X represents nitrogen or C&#x2014;R; R, R, R, R, R, R, R, Rand Rindependently represent hydrogen, halogen, a cyano group, an amino group, an optionally substituted aryl group, an optionally substituted heteroaryl group, sulfate, &#x2014;COOH, an alkoxy group, a carbonyl group, a C-Chaloalkyl group, a C-Calkyl group, a C-Calkenyl group, a C-Calkynyl group, a C-Ccycloalkyl group, a C-Ccycloalkenyl group, a C-Cheterocycloalkyl group, or a C-Cheterocycloalkenyl group; and Rrepresents hydrogen or alkali metal.

2-phenyl-6-azolylpyridine-based ligand and group VIII transition metal complex

The present invention provides a phosphorescent tris-chelated transition metal complex having one carbon-nitrogen (C^N) or nitrogen-nitrogen (N^N) chromophoric ligand forming a coordination sphere thereof with a transition metal, and two identical carbon-phosphorus (C^P) chelates being incorporated into the coordination sphere, wherein the metal is iridium, platinum, osmium or ruthenium, and the chromophoric ligands possess a relatively lower energy gap in comparison with that of the non-chromophoric chelate, the latter afforded an effective barrier for inhibiting the ligand-to-ligand charge transfer process, so that bright phosphorescence can be observed. The architecture and energy gap of the present molecular designs are suitable for generation of high efficiency blue, green and even red emissions.

Emissive transition-metal complexes with both carbon-phosphorus ancillary and chromophoric chelates, synthetic method of preparing the same and phosphorescent organic light emitting diode thereof

The present invention discloses a phosphorescent tris-chelated transition metal complex comprising i) two identical carbon-nitrogen (C^N) or nitrogen-nitrogen (N^N) chromophoric ligands being incorporated into a coordination sphere thereof with a transition metal, and one carbon-phosphorus (C^P) chelate being incorporated into the coordination sphere; or ii) one carbon-nitrogen (C^N) or nitrogen-nitrogen (N^N) chromophoric ligand forming a coordination sphere thereof with a transition metal, and two identical carbon-phosphorus (C^P) chelates being incorporated into the coordination sphere, wherein the metal is iridium, platinum, osmium or ruthenium, and the chromophoric ligands possess a relatively lower energy gap in comparison with that of the non-chromophoric chelate, the latter afforded an effective barrier for inhibiting the ligand-to-ligand charge transfer process, so that bright phosphorescence can be observed. The architecture and energy gap of the present molecular designs are suitable for generation of high efficiency blue, green and even red emissions.

Growing community of inventors

Hsinchu, Taiwan

Chien-Wei Hsu