Ricoh Company, Ltd.

Masataka Mohri

Daisuke Goto

Takuji Kato

Takashi Okada

Shinji Matsumoto

Satoshi Yamamoto

Toshiya Sagisaka

Masato Shinoda

Keiichiro Yutani

Tamotsu Aruga

Hiroshi Ikuno

Tamotsu Horiuchi

Masafumi Torii

Satoshi Miyagawa

Hajime Nakanotani

Masaki Kato

Katsuyuki Yamada

Takanori Tano

Takeshi Orito

Yoshihiro Harada

Yoshitaka Hayashi

Noboru Sasa

Toshishige Fujii

Yuuma Usui

Toshihide Sasaki

Masayuki Fujiwara

Takuji Katoh

Kiyoto Shibata

A method for producing a luminescent organic film, the method including: coating a solution containing a &#x3c0;-electron conjugated compound precursor A-(B)m and at least one kind of a luminescent dye, where the &#x3c0;-electron conjugated compound precursor A-(B)m contains a leaving substituent; and applying external stimulus to the &#x3c0;-electron conjugated compound precursor A-(B)m to eliminate the leaving substituent thereof, so that the &#x3c0;-electron conjugated compound precursor A-(B)m is converted to a &#x3c0;-electron conjugated compound A-(C)m and an eliminated compound X&#x2014;Y as in the following reaction formula (I): 

Method for producing organic electroluminescence element, and organic electroluminescence element

An arylamine compound including: a partial structure shown in formula (1-1) or (1-2), wherein either X or Y is one of leaving substituents and the other is a hydrogen atom; either (X, X) or (Y, Y) is one of the leaving substituents respectively and the other is the hydrogen atom respectively; each of Q, Q, Q, Q, Q, and Qis selected from the hydrogen atom, a halogen atom, organic substituents other than the leaving substituents, and an atomic bonding to link with an adjacent arylamine group respectively; and adjacent two substituents selected from Q, Q, Q, Q, Q, and Qmay be linked together to form the ring which may be a part of an arylamine group. 

Arylamine compound

A leaving substituent-containing compound including a partial structure represented by the following General Formula (I): 

Method for producing a pi-electron conjugated compound

To provide an organic semiconductive material, expressed by the following general formula I: General Formula I where R1 to R10 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted aryl group, and may be bonded to each other to form a ring; and X is a carbon atom or a nitrogen atom. 

Dithienobenzodithiophene semiconductive material and electronic device using the same

Organic electronic device containing an organic semiconductor material film which contains a leaving substituent-containing compound

An ink containing an organic semiconductive material precursor containing a dithienobenzodithiophene derivative of the following formula: X and Y are groups capable of bonding together upon application of an external stimulus to form a compound X&#x2014;Y that is capable of eliminating from the dithienobenzodithiophene derivative; Rand Rare each independently a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; and Rto Rare each independently a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted aryl group.

Organic semiconductive material precursor containing dithienobenzodithiophene derivative, ink, insulating member, charge-transporting member, and organic electronic device

A leaving substituent-containing compound including a partial structure represented by the following General Formula (I): where a pair of Xand Xor a pair of Yand Yeach represent a hydrogen atom; the other pair each represent a group selected from the group consisting of a halogen atom and a substituted or unsubstituted acyloxy group having one or more carbon atoms; a pair of the acyloxy groups represented by the pair of Xand Xor the pair of Yand Ymay be identical or different, or may be bonded together to form a ring; Rto Reach represent a hydrogen atom or a substituent; and Qand Qeach represent a hydrogen atom, a halogen atom or a monovalent organic group, and may be bonded together to form a ring.

Leaving substituent-containing compound, products produced using the same, and methods for producing the products

An organic semiconductive material precursor containing a dithienobenzodithiophene derivative expressed by General Formula I: in General Formula I, X and Y represent groups bonded together, upon application of external stimulus, to form X&#x2014;Y which is eliminated from the compound expressed by General Formula I; Rand Reach represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; and Rto Reach represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkylthio group, or a substituted or unsubstituted aryl group. 

A tetrathiafulvalene derivative expressed by General Formula (I): General Formula (I) in General Formula (I), X represents an atom selected from a carbon atom, a sulfur atom, and a nitrogen atom, and Xs may be the same or different; provided that when X is the carbon atom or the nitrogen atom, Rto Reach represent one of a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, and a substituted or unsubstituted thioalkoxy group, and may be the same or different; and Yand Yeach represent one of structures expressed by General Formulas (II) and (III), and may be the same or different: General Formula (II) General Formula (III). 

Tetrathiafulvalene derivative, and organic film and organic transistor using the same

A [1]benzothieno[3,2-b][1]benzothiophene compound expressed by General Formula (I): General Formula (I) where X and Y are each independently a hydrogen atom; a halogen atom; or a functional group having a straight or branched aliphatic alkyl group optionally having a halogen atom, a functional group having an alicyclic alkyl group optionally having a halogen atom, a functional group having a straight or branched aliphatic alkenyl group optionally having a halogen atom, a functional group having an alicyclic alkenyl group optionally having a halogen atom, a functional group having a carboxyl group, or a functional group having a thiol group, as a partial structure; and X and Y are the same or each independently different, provided that at least one of X and Y has a straight or branched aliphatic alkenyl group, an alicyclic alkenyl group, a carboxyl group or a thiol group, as a partial structure. 

[1]benzothieno[3,2-B][1]benzothiophene compound and method for producing the same, and organic electronic device using the same

An optical recording medium containing a substrate and a recording layer over the substrate, wherein the recording layer primarily contains Bi and O, and further contains B and at least one element X selected from Ge, Li, Sn, Cu, Fe, Pd, Zn, Mg, Nd, Mn and Ni, and a sputtering target containing Bi, B and at least one element X selected from Ge, Li, Sn, Cu, Fe, Pd, Zn, Mg, Nd, Mn and Ni.

Optical recording medium, and sputtering target and method for producing the same

A benzobisthiazole compound having a specific formula, and a benzobisthiazole polymer having a specific benzothiazole structure. An organic film including the benzobisthiazole polymer, the benzobisthiazole compound and/or a polymer obtained from the benzobisthiazole compound. An organic thin-film transistor including an organic semiconductor layer including the organic film; a pair of electrodes configured to flow an electric current through the organic semiconductor layer; and a third electrode configured to apply a voltage to the organic semiconductor layer.

Benzobisthiazole compound, benzobisthiazole polymer, organic film including the compound or polymer and transistor including the organic film

An optical recording medium including a substrate, an information recording layer including a recording layer and a cover layer, wherein information is written and read on the information recording layer by irradiation of laser beam via the cover layer, the cover layer includes an ultraviolet curing resin and an inner hardness Hi defined as hardness H of the cover layer on a side of the information recording layer satisfies the following relationship: 3.8&#x2266;Hi&#x2266;5.5, when H=3.8584&#xd7;F/(h&#xd7;h), wherein h represents an indented depth in a state in which a triangular pyramid indenter with a tip angle of 115&#xb0; is pressed under F=9.8 mN.

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Kanagawa, Japan

Masataka Mohri