Abstract: The present invention relates to methods for accelerating the trans-cis isomerization of 1,2-diphenylethylene analogues by using photocatalyst. According to this invention, in the presence of polypyridyl platinum(II) complex with catalytic dosage, a solution containing trans-1,2-diphenylethylene analogues or mixture of cis- and trans-1,2-diphenylethylene analogues is irradiated by visible light to prepare product of cis-1,2-diphenylethylene analogues or product predominantly being cis-1,2-diphenylethylene analogues under inert gas atmosphere. This method has the advantages of fast reaction, high performance, easy separation of reaction system and recycle of the polypyridyl platinum (II) complexes.
Type:
Grant
Filed:
December 3, 2008
Date of Patent:
May 10, 2011
Assignee:
Technical Institute of Physics and Chemistry of Chinese Academy of Science
Inventors:
Li-Zhu Wu, Ming-Li Peng, Li Zhou, Deng-Hui Wang
Abstract: Rupestonic acid derivatives are rupestonic acid derivative A- or B-type compounds, prepared through a condensation reaction from starting materials, i.e., a monomer compound of rupestonic acid and an aromatic amine or fatty amine or an organic alcohol, i.e., a fatty alcohol or an aromatic alcohol. Rupestonic acid, which is the monomer compound of sesquiterpene isolated from the plant Xinjiang Artemisia rupestric L., is used as a mother compound. Natural anti-virus lead compound with high activity are discovered by modifying the structure of the monomer compound of rupestonic acid. Activity results of the lead compound showed pharmaceutical application of anti-I, II flu virus and anti-I, II herpes simplex virus infection. These compounds can be used alone or in combination with one or more pharmaceutical acceptable, inert and nontoxic excipients or carries in a pharmaceutical composition.
Type:
Application
Filed:
September 15, 2009
Publication date:
April 8, 2010
Applicant:
Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences
Inventors:
Haji Akber Aisa, Jianping Yong, Jiangyu Zhao
Abstract: The present invention provides a cesium-rubidium-borate nonlinear optical crystal, which is represented by the chemical formula CsxRb1?xB3O5 (0<x<1), and belongs to the P212121 space group with the unit cell parameters in the following range: a=8.202-8.514 ?, b=10.075-9.140 ?, c=5.375-6.207 ? and Z=4. A preparation method of the crystal is as follows: a cesium salt, a rubidium salt and a boron-containing compound are mixed pro rata, heated, kept at a temperature, and then cooled down to obtain the cesium-rubidium-borate. The cesium-rubidium-borate and a flux are mixed and heated to form a melt to obtain a mixing melt. Then a seed crystal attached to a seed rod is dipped into the mixing melt and the seed rod is rotated simultaneously. The melt is kept at 620-780° C., and then cooled down slowly at a rate of 0-5° C. per day. The obtained crystal is drawn out of the melt surface and cooled down to room temperature. Thereby, the cesium-rubidium-borate nonlinear optical crystal is obtained.
Type:
Grant
Filed:
June 23, 2005
Date of Patent:
September 15, 2009
Assignee:
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Abstract: The present invention relates to methods for accelerating the trans-cis isomerization of 1,2-diphenylethylene analogues by using photocatalyst. According to this invention, in the presence of polypyridyl platinum(II) complex with catalytic dosage, a solution containing trans-1,2-diphenylethylene analogues or mixture of cis- and trans-1,2-diphenylethylene analogues is irradiated by visible light to prepare product of cis-1,2-diphenylethylene analogues or product predominantly being cis-1,2-diphenylethylene analogues under inert gas atmosphere. This method has the advantages of fast reaction, high performance, easy separation of reaction system and recycle of the polypyridyl platinum (II) complexes.
Type:
Application
Filed:
December 3, 2008
Publication date:
June 18, 2009
Applicant:
Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences
Inventors:
Li-Zhu Wu, Ming-Li Peng, Li Zhou, Deng-Hui Wang
Abstract: Disclosed herein are several organic compounds having electron-transporting and/or hole-blocking performance and their preparation method and use and the OLEDs comprising the organic compound. The organic compounds exhibit high ionization potential (IP), electron affinity (Ea), glass transition temperature (Tg) and high electron mobility, and are a kind of good electron-transporting material with good hole-blocking ability. The devices comprising these compounds as one of the emitting layer, electron-transporting layer (ETL) and hole-blocking layer (HBL) show improved efficiency and better color purity.
Type:
Application
Filed:
October 15, 2008
Publication date:
April 23, 2009
Applicant:
Technical Institute Of Physics And Chemistry Of Chinese Academy Of Sciences
Inventors:
PengFei WANG, Na LI, Weimin LIU, Shuit-Tong LEE, Chun-Sing Lee
Abstract: Refrigerant mixtures used in the lower temperature stage of two-stage cascade refrigeration systems and obtained by physical mixing of ethane, hexafluoroethane, or/and trifluoromethane. One of the refrigerant mixtures comprises ethane and hexafluoroethane. Another refrigerant mixture comprises ethane and trifluoromethane. Yet another one of the refrigerant mixtures comprises ethane, hexafluoroethane, and trifluoromethane.
Type:
Application
Filed:
July 7, 2006
Publication date:
January 11, 2007
Applicant:
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Abstract: The present invention provides a cesium-rubidium-borate nonlinear optical crystal, which is represented by the chemical formula CsxRb1-xB3O5 (0<x<1), and belongs to the P212121 space group with the unit cell parameters in the following range: a=8.202-8.514 ?, b=10.075-9.140 ?, c=5.375-6.207 ? and Z=4. A preparation method of the crystal is as follows: a cesium salt, a rubidium salt and a boron-containing compound are mixed pro rata, heated, kept at a temperature, and then cooled down to obtain the cesium-rubidium-borate. The cesium-rubidium-borate and a flux are mixed and heated to form a melt to obtain a mixing melt. Then a seed crystal attached to a seed rod is dipped into the mixing melt and the seed rod is rotated simultaneously. The melt is kept at 620-780° C., and then cooled down slowly at a rate of 0-5° C. per day. The obtained crystal is drawn out of the melt surface and cooled down to room temperature. Thereby, the cesium-rubidium-borate nonlinear optical crystal is obtained.
Type:
Application
Filed:
June 23, 2005
Publication date:
December 29, 2005
Applicant:
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Abstract: The present invention relates to nonlinear optical crystals of compound Na3La9B8O27 and producing method and uses thereof. From the Na3La9B8O27 compound, large size single crystal of Na3La9B8O27 could be prepared by flux method. Na3La9B8O27 crystals are non-hygroscopic, and possess stronger nonlinear optical effect and good mechanical properties. They meet the requirements for the frequency conversion of blue—green wavelength lasers and could be used to prepare nonlinear optical devices.
Type:
Grant
Filed:
October 28, 2002
Date of Patent:
July 26, 2005
Assignee:
Technical Institute of Physics and Chemistry, CAS
Abstract: The present invention relates to prism-nonlinear optical crystal couplers for frequency conversion, including M pieces of nonlinear optical crystal and one coupling prism stuck to the incident surface or/and exit surface of the crystal by optical stick or a matching liquid. The coupling prisms are the same triangle prisms of right triangle prism, equilateral triangle prism, or inequlateral triangle prism, or are different triangle prisms. It is hopeful to obtain frequency 6th harmonic output.
Type:
Grant
Filed:
April 18, 2002
Date of Patent:
February 22, 2005
Assignee:
Technical Institute of Physics and Chemistry
Inventors:
Chuangtian Chen, Zuyan Xu, Junhua Lu, Guiling Wang