Sumitomo Chemical Company, Limited

Agency of Industrial Science and Technology

Director-general of the Agency of Industrial Science and Technology

Director-general of Agency of Industrial Science and Technology

Director-general of the Agency of Science and Technology, an Organ of

Takanobu Noguchi

Toshihiro Ohnishi

Shuji Doi

Tomoyuki Suzuki

Masato Ueda

Yoshiaki Tsubata

Seimei Yasui

Ichiki Murase

Makoto Kitano

Masato Kuwabara

Masamitsu Ishitobi

Hiroshi Sato

Tsuyoshi Nakano

Takahiro Ueoka

Fumi Yamaguchi

Yasushi Iyechika

Shigeru Sasaki

Michio Yamamoto

Koji Higashi

Satoshi Kobayashi

Makoto Anryu

Akiko Shimizu

Takenori Osada

Makoto Namioka

Masakazu Sagou

Yoshiharu Yagi

Chizu Sekine

Yoshiki Toyoshima

Kazuo Hayatsu

Hidenobu Kakimoto

Akiko Nakazono

Michitaka Morikawa

Yoshinobu Matsuda

Akihiko Okada

Mitsuaki Funada

Junzo Saito

Masakazu Sagoh

Yoshiaki Tsubara

Makiko Ohshima

Makano Kitano

A copolymer having two or more repeating units selected from the group consisting of arylene groups, divalent heterocyclic groups and divalent aromatic amine groups wherein the copolymer has, on at least one of molecular chain ends, a monovalent heterocyclic group, a monovalent group derived from a heterocyclic group coordinated metal complex, and an aromatic end group selected from aryl groups having a formula weight of 90 or more, and the copolymer shows fluorescence in the solid state and has a polystyrene-reduced weight-average molecular weight of 10to 10.

Copolymer and polymer light emitting device using the same

A polymer compound containing a structure of the following formula (B):&#x2014;Ar&#x2014;&#x2003;&#x2003;(A)(wherein, Ar represents an arylene group, divalent heterocyclic group, divalent aromatic amine group or divalent group having a metal complex structure.) (wherein, A ring and B ring represent each independently an aromatic ring optionally having a substituent. Xrepresents &#x2014;C(&#x2550;O)&#x2014;, &#x2014;S(&#x2550;O)&#x2014;, &#x2014;S(&#x2550;O)&#x2014;, &#x2014;P(&#x2550;O)(R)&#x2014;, &#x2014;C(R)(R)&#x2014;, &#x2014;C(R)(R)&#x2014;, &#x2014;B(R)&#x2014;, &#x2014;N(R)&#x2014; or &#x2014;Si(R)(R)&#x2014;. R* represents a hydrogen atom or monovalent or divalent group, Rrepresents a hydrogen atom or monovalent group, and Rrepresents a monovalent group having a hetero atom. When Rand Rare present each in plural number, they may be the same or different).

Polymer compound and polymer light emitting device using the same

A polymer compound comprising a repeating unit of the following formula (1) and having a polystyrene-reduced number average molecular weight of 1&#xd7;10to 1&#xd7;10: [wherein, Arand Arrepresent an arylene group, divalent heterocyclic group or divalent aromatic amine group. Zrepresents &#x2014;CR&#x2550;CR&#x2014; or &#x2014;C&#x2261;C&#x2014;. Here, Rand Rrepresent a hydrogen atom, alkyl group, aryl group or the like. m and n represent 1 or 2. Rand Rrepresent a hydrogen atom, alkyl group or alkoxy group.].

Polymer compound and light emitting device using the same

High-molecular compounds comprising repeating units represented by the general formula (1) or (2) and having number-average molecular weights of 10to 10in terms of polystyrene: (1) [wherein Arand Arare each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and Xand Xare each independently O, S, C(&#x2550;O), S(&#x2550;O), SO, C(R)(R), Si(R)(R), N(R), B(R), P(R), or P(&#x2550;O)(R), with the provisos that Xand Xmust not be the same and that Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar, and Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar] (2) [wherein Arand Arare each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and Xand Xare each independently N, B, P, C(R), or Si(R), with the provisos that Xand Xmust not be the same and that Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar, and Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar]. 

Polymer compound and polymer light-emitting device using the same

A polymer compound comprising a repeating unit of the following formula (1) and at least one of a repeating unit of the following formula (2) and a repeating unit of the following formula (70). (wherein, Q represents  Arand Arrepresent an arylene group, divalent heterocyclic group or divalent aromatic amine group. Arrepresents an aryl group, monovalent heterocyclic group or monovalent aromatic amine group. Z represents &#x2014;CR&#x2550;CR&#x2014; or &#x2014;C&#x2261;C&#x2014;. Rand Rrepresent a hydrogen atom, alkyl group or the like. m represents 0 or 1.) (wherein, a ring A and a ring B represent an aromatic hydrocarbon ring, and at least one of the ring A and the ring B is an aromatic hydrocarbon ring having two or more benzene rings condensed. Rw and Rx represent an alkyl group, alkoxy group or the like.) (wherein, a ring C and a ring D represent an aromatic ring. E represents O or S.).

A copolymer comprising a repeating unit of the following formula (1) and a repeating unit of the following formula (2): (wherein, a ring A and ring B represent each independently an aromatic ring optionally having a substituent. X is &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;S(&#x2550;O)&#x2014;, &#x2014;S(&#x2550;O)&#x2014;, &#x2014;Si(R)&#x2014;Si(R)&#x2014;, &#x2014;Si(R)&#x2014;, &#x2014;B(R)&#x2014;, &#x2014;P(R)&#x2014;, &#x2014;P(&#x2550;O)(R)&#x2014;, &#x2014;O&#x2014;C(R)&#x2014; or &#x2014;N&#x2550;C(R)&#x2014;, and Rrepresents a substituent. When there are two or more Rs in the same formula, they may be the same or different.) (wherein, Y is &#x2014;O&#x2014;, &#x2014;S&#x2014; or &#x2014;C(&#x2550;O)&#x2014;. Arrepresents an aryl group optionally having a substituent or a monovalent heterocyclic group optionally having a substituent, and there is no substituent connected to atoms of the ring of Ar, the atoms being adjacent an atom of Arconnected to a nitrogen atom in the formula. Rrepresents a substituent, and n represents an integer of from 0 to 3. When there are two or more Rs in the formula, they may be the same or different.).

A polymeric fluorescent substance exhibiting fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 1&#xd7;10to 1&#xd7;10, and comprising one or more repeating units of formula (1) and one or more repeating units of formula (8),&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014;&#x2003;&#x2003;(1)&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014;&#x2003;&#x2003;(8)wherein Arrepresents a specific arylene or a divalent heterocyclic compound group, and Arrepresent an arylene or a divalent heterocyclic compound group other than Ar. By using the polymeric fluorescent substance, a high performance polymer LED can easily be obtained.

Polymeric fluorescent substance and polymer light-emitting device using the same

Provided is a polymer comprising a repeating unit represented by formula (1), wherein, Arepresents a divalent group in which the bond distance ratio (bond distance of C(&#x3b1;)-A/bond distance of C(&#x3b1;)-C(&#x3b2;)) is 1.10 or more; R, R, R, R, R, and R, each independently represent a hydrogen atom, alkyl group, alkyloxy group, aryloxy group, arylalkyloxy group, etc. The polymer is useful as a light-emitting material, a charge transporting material, etc.

Polymer and polymer light-emitting device using the same

Provided is a polymeric fluorescent substance showing fluorescence in solid state, which has a specific carrier drift mobility, a specific repeating unit, and specific number-average molecular weight. The polymeric fluorescent substance is excellent in solubility to organic solvents, and has higher efficiency and longer lifetime in applying as a polymer LED.

Polymeric fluorescent substance and polymer light-emitting device

A method for producing a polymeric fluorescent substance characterized by comprising the step of contacting with an alkali a crude polymeric fluorescent substance that is fluorescent in a solid state and has a polystyrene equivalent number average molecular weight of 10to 10and one or more repeating units represented by the following formula (1):&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014; &#x2003;&#x2003;(1)wherein Aris an arylene group or heterocyclic compound group that is unsubstituted or substituted by one or more substituents; Rand Reach independently represent a group selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, a heterocyclic compound group and a cyano group, in which the aryl group and the heterocyclic compound group is optionally substituted by another substituent; and n is 0 or 1.

Polymeric fluorescent material, process for producing the same, and polymeric luminiscent element

A method for producing a polymeric fluorescent substance characterized by comprising the step of treating with an acid a polymeric fluorescent substance that is fluorescent in a solid state and has a polystyrene equivalent number average molecular weight of 1&#xd7;10to 1&#xd7;10. A method for producing a polymeric fluorescent substance characterized by comprising the steps of treating with an acid a polymeric fluorescent substance that is fluorescent in a solid state and has a polystyrene equivalent number average molecular weight of 1&#xd7;10to 1&#xd7;10and treating it with an alkali. A method for producing a polymeric fluorescent substance characterized by comprising the steps of treating with an acid a polymeric fluorescent substance that is fluorescent in a solid state and has a polystyrene equivalent number average molecular weight of 1&#xd7;10to 1&#xd7;10, treating it with an alkali and finally treating it with a substance that does not contain an acid or an alkali.

Processes for producing polymeric fluorescent material and polymeric luminescent element

A polymeric fluorescent substance exhibiting visible fluorescence in the solid state, having polystyrene reduced number average molecular weight of 1&#xd7;10to 1&#xd7;10, and comprising one or more repeating units of following formula (1), wherein Arand Areach independently represent an arylene group or the like; Arrepresents an aryl group or the like having one or more substituents of formula (2) as nuclear substitution; X represents &#x2014;CR&#x2550;CR&#x2014; or &#x2014;C&#x2261;C&#x2014;; and n is 0 or 1,&#x2014;Y&#x2014;Ar&#x2003;&#x2003;(2)wherein Arrepresents an aryl group or the like; and Y represents &#x2014;CR&#x2550;CR&#x2014; or &#x2014;C&#x2261;C&#x2014;. The triarylamine type polymeric fluorescent substance is excellent in quantum yield of fluorescence and in light emitting efficiency when made into a device.

Polymeric fluorescent substrate and polymer light-emitting device using the same

Provided is a polymeric fluorescent substance comprising a copolymer which has a substituent containing a specific aromatic amine structure below in the side chain, wherein Xis a divalent hydrocarbon group; Aris an arylene group or the like; Arand Arindependently represent an aryl group or the like. The polymeric fluorescent substance is preferably used for a light emitting layer of a polymer LED having high luminance and high light emitting efficiency.

A polymeric fluorescent substance showing fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 10to 10, and comprising one or more repeating units of formula (1) and one or more repeating units of formula (2) which is different from formula (1), exhibits strong fluorescence and/or excellent charge transporting property, and a high performance polymer LED which can be driven at low voltage and high efficiency is obtained.

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Tsukuba, Japan

Takanobu Noguchi