Chisso Corporation

Shin-etsu Chemical Co., Ltd.

Sumitomo Chemical Company, Limited

Japan Science and Technology Agency

Kansai Technology Licensing Organization Co., Ltd.

Kohei Tamao

Shigehiro Yamaguchi

Manabu Uchida

Kenji Furukawa

Takenori Izumizawa

Chizu Sekine

Satoshi Kobayashi

Makoto Kitano

Yoshihiko Ito

Caihong Xu

Yoshiki Nakagawa

The invention provides condensed polycyclic &#x3c0;-conjugated organic materials and manufacturing methods for the materials. A metal reducing agent is reacted with a straight-chain, triple bond-containing hydrocarbon (aryl acetylene compound, phenyl acetylene compound), the hydrocarbon being a benzene ring with an organic silicon as a substituent, so as to allow an intramolecular reductive cyclization reaction to proceed between the silicon and the triple-bond carbon. The reaction produces condensed polycyclic &#x3c0;-conjugated organic materials of the invention. The invention provides light-emitting materials applicable for organic electroluminescent devices, condensed polycyclic &#x3c0;-conjugated organic materials applicable for charge transport materials, their intermediate products, and a manufacture method for condensed polycyclic &#x3c0;-conjugated organic materials.

Condensed polycyclic &#x3c0;-conjugated organic material, intermediate product therefor, and method of manufacturing condensed polycyclic &#x3c0;-conjugated organic material

A polymer characterized by comprising repeating units represented by the following formula (1) and having a number-average molecular weight, in terms of polystyrene, of 10to 10. (In the formula, Rrepresents hydrogen, alkyl, alkoxy, alkylthio, aryl, aryloxy, arylthio, arylalkyl, arylalkoxy, arylalkylthio, arylalkenyl, arylalkynyl, amino, substituted amino, silyl, substituted silyl, silyloxy, substituted silyloxy, monovalent heterocyclic group, or halogeno; and rings D and E each represents an optionally substituted aromatic ring.)

Polymer and polymeric luminescent element comprising the same

An electroluminescence element (EL) obtained by using a silacyclopentadiene derivation expressed by the general formula (I) and the derivative are provided. ##STR1## (wherein X and Y are independently hydrocarbon radicals with from 1 to 6 atoms and R.sub.1 to R.sub.4 are hydrogen, halogens, alkyl radicals with from 1 to 6 carbon atoms, or a condensed (un)substituted ring if being adjacent).

Silacyclopentadiene derivatives and an organic electroluminescent

The present invention provides a silacyclopentadiene derivative represented by the following Formula (1): ##STR1## wherein X.sub.1 and Y.sub.1 represent independently a halogen atom, an amino group, a hydroxyl group, or an amino group or a hydroxyl group each having a substituent; R.sub.1 to R.sub.4 represent independently a hydrogen atom, a halogen atom, an alkyl group, an amino group, a silyl group, an aryl group, a cyano group, or the respective groups describe above each having a substituent; out of the groups represented by R.sub.1 to R.sub.4, those adjacent may be combined with each other to form rings; when R.sub.1 and R.sub.4 are phenyl groups or when combined are R.sub.1 with R.sub.2 and R.sub.3 with R.sub.4 respectively to form benzene rings, X.sub.1 and Y.sub.1 are not a chlorine atom or a hydroxyl group; and when R.sub.1 and R.sub.4 are methyl groups, X.sub.1 and Y.sub.1 are not bromine atoms.

Silacyclopentadiene derivative

An electroluminescence element (EL) obtained by using a silacyclopentadiene. derivation expressed by the general formula (I) and the derivative are provided. ##STR1## (wherein X and Y are independently hydrocarbon radicals with from 1 to 6 atoms and R.sub.1 to R.sub.4 are hydrogen, halogens, alkyl radicals with from 1 to 6 carbon atoms, or a condensed (un)substituted ring if being adjacent).

2,5-Reactive substituent group-containing siloles of the following general formula are provided ##STR1## wherein R.sup.1 to R.sup.4 may be the same or different and independently represent a monovalent hydrocarbon group having from 1 to 12 carbon atoms or a hydrogen atom, and R.sup.5 and R.sup.6 may be the same or different and independently represent a group selected from monovalent hydrocarbon-substituted sulfur, selenium, silicon, germanium, tin and phosphorus, or a halogen atom. Polycondensates of the siloles and processes for preparing the siloles and polycondensates are described.

2,5-reactive substituent group-containing siloles, silole

A thiophene-silole copolymer represented by the formula below and its method of manufacture are disclosed; ##STR1## wherein, R is a monofunctional hydrocarbon group having 1 to 20 carbon atoms or hydrogen, A and B are alkyl groups, aromatic groups, alkenyl groups, or represent an aliphatic group forming a ring wherein A is bonded to B, m and p are integers no less than 1, n is a natural number which can be 0, X is a hydrogen or halogen atom, and Y is a hydrogen atom, halogen atom or thiophene.

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Kyoto, Japan

Kohei Tamao