High lasing oscillation efficiency of Eu(III) complexes having remarkably sharp emission band
摘要:
Luminescent Eu(III) complexes with bis-phosphine oxide ligands were synthesized. Geometric structures of novel Eu(III) complexes were determined by single-crystal X-ray diffraction. One of the Eu(III) complexes showed remarkably sharp red emission and large stimulated emission cross-section (full width at half maximum (FWHM) = 2.1 nm, stimulated emission cross-section = 1.80 x 10(-20) cm(2)). The sharpness of the emission bands of the Eu(III) complexes was discussed in terms of the symmetry of the geometrical structure. (c) 2005 Elsevier B.V. All rights reserved.
P-Arylation in water has been developed via cross-coupling of arylhalides with diphenylphosphine oxide (Ph2P(O)H) and (RP)-(−)-menthyl benzylphosphinate catalyzed by NiCl2·6H2O/Zn under relatively mild conditions.
NiCl 2 ·6H 2 O / Zn催化的芳基卤化物与二苯基膦氧化物(Ph 2 P(O)H)和(R P)-(-)-薄荷基苄基次膦酸酯的交叉偶联已开发了水中的P-芳基化。相对温和的条件。
PHOTOELECTRIC CONVERSION DEVICE AND SOLAR CELL USING THE SAME
申请人:AKIYAMA Seiji
公开号:US20120211082A1
公开(公告)日:2012-08-23
There is provides a photoelectric conversion device material which can be used as an electrode buffer material for a solar cell or the like and can improve durability while maintaining the interaction with an electrode and mobility; a photoelectric conversion device using the photoelectric conversion device material; and a solar cell using the photoelectric conversion device. A photoelectric conversion device containing a buffer layer and an active layer, wherein the buffer layer contains a compound represented by the following general formula (I), the active layer contains an n-type semiconductor, and the n-type semiconductor is a compound having a solubility in toluene of 0.5% by weight or more at 25° C. and having an electron mobility of 1.0×10
−6
cm
2
/Vs or more.
Molecular photosensitizers exhibit efficient light-absorbing capabilities in photo-functional materials. This work reports effective photosensitization at excited-state equilibrium using TbIII coordination polymers. The coordination polymers are composed of TbIII ions (as emission centers), hexafluoroacetylacetonato (as a photosensitizer ligand), and phosphine oxide-based bridges (as ancillary ligands)
Microwave-Assisted Palladium Acetate-Catalyzed C–P Cross-Coupling of Arylboronic Acids and >P(O)H Reagents in the Absence of the Usual Mono- and Bidentate P-Ligands: Mechanistic Insights
作者:Bianka Huszár、Zoltán Mucsi、György Keglevich
DOI:10.1021/acs.joc.3c01269
日期:2023.8.18
A less-studied halogen-free variation of the Hirao reaction involving the coupling of arylboronicacids with >P(O)H reagents, such as diarylphosphine oxides, diethyl phosphite, and ethyl phenyl-H-phosphinate, was investigated in detail using Pd(OAc)2 as the catalyst precursor and applying some excess of the P-reagent to supply the ligand via its trivalent tautomeric (>P–OH) form. The optimum conditions
CYCLIC OLEFIN ADDITION COPOLYMER, METHOD FOR PRODUCING THE SAME, AND RETARDATION FILM OBTAINED FROM THE COPOLYMER
申请人:JSR Corporation
公开号:EP2039708A1
公开(公告)日:2009-03-25
A cyclic olefin addition copolymer includes a structural unit (1) derived from a cyclic olefin compound with a C4 alkyl substituent group and a structural unit (2) derived from a cyclic olefin compound with a C5-12 alkyl substituent group, and optionally includes a structural unit (3) derived from another cyclic olefin compound. The novel cyclic olefin addition copolymers according to the present invention are excellent in melt-formability, transparency and heat resistance, have low water absorption properties, low dielectric constant and low metal content, and are suitably used in optical parts such as optical films. Processes according to the present invention produce the cyclic olefin addition copolymers at high yield with small amounts of catalysts.