Abstract: A triphenylamine derivative, represented by the following general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom or an aryl group which may have a substituent group; and m and n each represents 0 or 1.

Abstract: A phenothiazine or phenoxazine derivative represented by the following general formula (1), a charge-transporting material comprising the derivative, and an electrophotographic photoreceptor containing the charge-transporting material are disclosed. The charge-transporting material has good solubility in binder polymers, satisfactory sensitivity, and a low residual potential In general formula (1) Ar.sup.1 and Ar.sup.2 may be the same or different and each represents an optionally substituted aryl group; R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, a lower alkyl group, or an optionally substituted aryl group; R.sup.3 represents a lower alkyl group, an alicyclic hydrocarbon group having 5 to 7 carbon atoms, an optionally substituted aryl group, or an optionally substituted aralkyl group; X represents a sulfur atom or an oxygen atom; and n and m each represents an integer of 0 or 1.

Abstract: A triphenylamine derivative, represented by the following general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom or an aryl group which may have a substituent group; and m and n each represents 0 or 1.

Abstract: An electrophotographic photoreceptor comprising a charge transporting material containing at least one triphenylamine compound represented by general formula (1) and at least one compound selected from the group consisting of a hydrazone compound, a triphenylamine dimer compound and a distyryl compound: ##STR1## said charge transporting material being able to express high carrier mobility, being high in solubility in a binder polymer, and being able to form a homogeneous charge transporting layer.

Abstract: A 1,4-bis(2',2'-diphenylvinyl)benzene derivative represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents a different lower alkyl group and Me represents a methyl group, a charge transporting material containing the compound (I), and an electrophotographic photoreceptor comprising a charge transporting layer containing the charge transporting material are disclosed.

Abstract: A charge transporting material high in solubility in a binder polymer and having high carrier mobility is disclosed, which contains a carbazole derivative represented by the following general formula (1): ##STR1## wherein Ar.sup.1 and Ar.sup.2, which may be the same or different, each represents an aryl group which may have a substituent group; R.sup.1 and R.sup.2, which may be the same or different, each represents a lower alkyl group or an aryl group which may have a substituent group; R.sup.3 represents a lower alkyl group, an alicyclic alkyl group having 5 to 7 carbon atoms, an aryl group which may have a substituent group, or an aralkyl group which may have a substituent group; and m and n each represents an integer of 0 or 1. An electrophotographic photoreceptor containing the charge transporting material is also disclosed.

Abstract: A triphenylamine derivative, a charge-transporting material comprising the triphenylamine derivative, and an electrophotographic photoreceptor containing a charge-transporting layer comprising the triphenylamine derivative are disclosed, wherein the triphenylamine derivative is represented by the following general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 may be the same or different and each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom, or an aryl group which may have a substituent, or R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 may be taken together to form a ring, and n represents 0 or 1.

Abstract: A triphenylamine derivative, a charge-transporting material comprising the triphenylamine derivative, and an electrophotographic photoreceptor containing a charge-transporting layer comprising the triphenylamine derivative are disclosed, wherein the triphenylamine derivative is represented by the following general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 may be the same or different and each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom, or an aryl group which may have a substituent, or R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 may be taken together to form a ring, and n represents 0 or 1.

Abstract: A 1,4-bis(2',2'-diphenylvinyl)benzene derivative represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents a different lower alkyl group and Me represents a methyl group, a charge transporting material containing the compound (I), and an electrophotographic photoreceptor comprising a charge transporting layer containing the charge transporting material are disclosed.

Abstract: A 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each independently represents a lower alkyl group which may be substituted, an aralkyl group which may be substituted, or an aryl group which may be substituted, and an electrophotographic photoreceptor using the compound are disclosed. The photoreceptor provides a high carrier drift mobility.

Abstract: A ferroelectric liquid crystal device is described. The device comprises a pair of substrates, an electrode arrangement formed on the inside surface of the substrates, an orientation control surface provided on the inside surface of one of said substrates, and a blended ferroelectric liquid crystal disposed between the substrates. By suitably preparing the liquid crystal, multi-micro-domains are formed in the liquid crystal. By virtue of the multi-micro-domains, the contrast ratio and the response speed are significantly improved.

Abstract: A 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative represented by formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each independently represents a lower alkyl group which may be substituted, an aralkyl group which may be substituted, or an aryl group which may be substituted, and an electrophotographic photoreceptor using the compound are disclosed. The photoreceptor provides a high carrier drift mobility.

Abstract: An electrophotographic photoreceptor is disclosed, comprising an electroconductive support having a light-sensitive layer containing a charge generating substance and a charge transporting substance, wherein said charge transporting substance is a 1,4-benzodithiafulvene derivative represented by formula (I): ##STR1## wherein R.sup.1 represents a lower alkyl group, a benzyl group, a naphthyl group, or a phenyl group which may contain a substituent; R.sup.2 represents a phenyl group which may contain a substituent or an N-alkyl-substituted carbazole group; R.sup.3 represents a hydrogen atom or a phenyl group which may contain a substituent; R.sup.4 represents a hydrogen atom, a lower alkyl group, a hydroxyl group, or an alkoxy group or an aryloxy group represented by OR.sup.5 ; R.sup.5 represents a lower alkyl group, a benzyl group, or a phenyl group which may contain a substituent; and n represents an integer of 0 or 1.