National Institute of Advanced Industrial Science and Technology

Director-general of Agency of Industrial Science and Technology

Japan As Represented by Director General of Agency of Industrial Science

Agency of Industrial Science and Technology

Secretary of Agency of Industrial Science and Technology

Hideki Sugihara

Hironori Arakawa

Kazuyuki Kasuga

Kohjiro Hara

Kazuhiro Sayama

Kazuhisa Hiratani

Ashraful Islam

Yuichiro Himeda

Lok Pratap Singh

Michael Graetzel

Mohammad Khaja Nazeeruddin

Toshikazu Takahashi

Tatsuhiro Okada

Takuji Hirose

Yoshiaki Takahashi

Bruce Baldwin

Zhen-He Wang

Masatoshi Yanagida

Ryuzi Katoh

Nobuko Komatsuzaki

Metal complex having &bgr;-diketonate, process for production thereof, photoelectric conversion element, and photochemical cell

Ruthenium complex useful as sensitizer, dye-sensitized oxide semiconductor electrode and solar cell using same

A ruthenium (II) complex having a dipyridophenazine or tetrapyridophenazine ligand and being represented by the formula (1) or (2) shown in the specification. Upon absorption of light, the complex emits fluorescence for a longer life time in a protic solvent as compared with known analogous compounds.

Ruthenium complex having di or tetrapyridophenazine ligand useful for use as luminescent material

Metal complex useful as sensitizer, dye-sensitized oxide semiconductor electrode and solar cell using same

A platinum complex represented by the formula PtL,/L,or PtLX,/LX,wherein L,and L each represent a ligand selected from the group consisting of 2,2&prime;-bipyridine compounds having at least one anionic group and 1,10-phenanthroline compounds having at least one anionic group, L,represents a dithiolate selected from those represented by the formulas (a) through (d) shown in the specification, and X,and X,each represent a thiolate selected from those represented by the following formulas (e) and (f) shown in the specification. A dye-sensitized electrode includes a substrate having an electrically conductive surface, an oxide semiconductor film formed on the conductive surface, and the above platinum complex supported on the film. A solar cell includes the above electrode, a counter electrode, and an electrolyte disposed therebetween.

Platinum complex for use as sensitizer for semiconductor electrode of solar cell

Disclosed is a novel compound having activity as an ionophore for ion transport, which is a monoester or monoamide of 1,3,5-trimethyl-1,3,5-cyclohexane tricarboxylic acid, i.e. Kemp's triacid or the stereoisomer thereof, the group R in the ester group --COOR or in the amide group --CONHR being an aralkyl group or aryloxyalkyl group having 7 to 20 carbon atoms. The monoester and monoamide derivatives can be synthesized from anhydride of Kemp's triacid by subjecting the anhydride to a ring-opening esterification or amidation reaction with an alcohol or amine. On the other hand, both of the stereoisomers can be obtained by the dehydrohalogenation reaction of 1,3,5-trimethyl-1,3,5-cyclohexane tricarboxylic acid anhydride acid halide with an alcohol or amine followed by the ring-opening hydrolysis reaction on the anhydride group.

Cyclohexane tricarboxylic acid derivative and method for the preparation

A bisquinolinol or bisbenzoquinolinol compound is disclosed which has the formula CH.sub.2 .dbd.C(CH--R.sup.1).sub.2 wherein R.sup.1 represents a 8-hydroxy-7-quinolyl group which may have an alkyl group at the 2-position thereof or a 10-hydroxy-9-benzoquinolyl group which may have an alkyl group at the 2-position thereof. The bisquinolinol and bisbenzoquinolinol compounds may be obtained by thermal rearrangement of a bisquinoline or bisbenzoquinoline compound of the formula CH.sub.2 .dbd.C(CH.sub.2 --O--R.sup.2).sub.2 wherein R.sup.2 represents a 8-quinolyl group which may have an alkyl group at the 2-position thereof or a 10-benzoquinolyl group which may have an alkyl group at the 2-position thereof. The bisquinolinol and bisbenzoquinolinol compounds are useful as an extractant for metal ions.

Bisquinolinol and bisbenzoquinolinol compounds, and process for

The electrode membrane of the invention has high ion-selectivity for lithium ions relative to other alkali and alkaline earth metal ions. The membrane is shaped from a polymeric composition comprising a polymeric material, e.g., a polyvinyl chloride resin and poly(1,2-butadiene), a plasticizer and, as the ion carrier, a derivative of 1,10-phenanthroline such as 2,9-dimethyl-1,10-phenanthroline and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline.

Electrode membrane

Growing community of inventors

Tsukuba, Japan

Hideki Sugihara