analogues are of great interest.' This communication describes the synthesis of symmetrical bis-(spiro[ I ,5-a]-indolines) 6a,b containing isolated spiroindoline rings linked with a sulfone group. The starting material, bis-[2,3.3-trimethylindolenin-5-yl]sulfone (3) was obtained by Fischer cyclization reaction of bis-[4-hydrazinophenyI]sulfone ( l I h and methylisopropylketone in one step (Scheme 1 ), the bis-arylhydrazone
Organophotoreceptor with charge transport compound having an epoxy group
申请人:——
公开号:US20040081903A1
公开(公告)日:2004-04-29
This invention relates to a novel organophotoreceptor that comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having
a) a novel charge transport compound having the formula
1
where X is a divalent hydrocarbon group of 1 to 30 carbon atoms, or a divalent hydrocarbon group of 1 to 30 carbon atoms where there is at least one substitution of a carbon atom by a heteroatom provided that no two heteroatoms may be adjacent within the backbone of an aliphatic divalent hydrocarbon radical, R
1
is an aryl group or a heterocyclic group, R
2
is a (N,N-disubstituted)arylamine group, and R
3
is an epoxy group; and
(b) a charge generating compound.
The epoxy group can be reacted with a functional group within the polymer to form a polymeric charge transport compound either directly or through a crosslinking agent.
Electrophotographic organophotoreceptors with novel charge transport compounds
申请人:Samsung Information Systems America
公开号:US20030113132A1
公开(公告)日:2003-06-19
A novel charge transport compound, a novel process using that novel compound and an organophotoreceptor includes:
(a) a novel charge transport compound having the formula
1
where R
1
and R
2
are selected so that R
1
and R
2
form, with the included nitrogen atom, a group selected from the group consisting of heterocyclic rings, aromatic rings, and dinaphthylamine; or R
1
comprises an aryl group and R
2
comprises a group selected from the group consisting of sulfolanyl, 4-(9H-fluoren-9-ylidene)benzyl, pyrrolyl, pyrazolyl, benzotriazolyl, stilbenyl, tetrazolyl; or R
1
comprises hydrogen, alkyl group, aryl group and R
2
comprises sulfonylphenyl.
R
3
is hydrogen, alkyl group, aryl group, heterocyclic group or a hydrocarbon group; and
Q is a 3-carbazole group;
(b) a charge generating compound; and
(c) an electrically conductive substrate.
Organophotoreceptor with charge transport material having a thiiranyl group
申请人:Tokarski Zbigniew
公开号:US20050147904A1
公开(公告)日:2005-07-07
Improved organophotoreceptor comprises a photoconductive element comprising:
(a) a charge transport material having the formula
where Y
1
and Y
2
are, each independently, a bond, —CR
1
═N—NR
2
—, or —CR
3
═N—N═CR
4
— where R
1
, R
2
, R
3
, and R
4
comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group;
X
1
and X
2
are, each independently, a linking group;
T
1
and T
2
are, each independently, a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group with the proviso that at least one of T
1
and T
2
is a thiiranyl group; and
Ar comprises an aromatic group with the proviso that when both Y
1
and Y
2
are a bond and one of T
1
and T
2
is not a thiiranyl group, Ar comprises a bis[(N,N-disubstituted)amino]aromatic group or a bicarbazole group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.
Polymeric charge transport materials having repeating units comprising an aromatic group and a -S- linkage
申请人:Jubran Nusrallah
公开号:US20060003241A1
公开(公告)日:2006-01-05
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
(a) a polymeric charge transport material having the formula
where n is a distribution of integers between 1 and 100,000 with an average value of greater than one; Y comprises an aromatic group;
X
1
and X
2
, each independently, is a bond or a linking group;
Q
1
and Q
2
are, each independently, O, S, or NR; and
R, R
1
, and R
2
comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of preparing the polymeric charge transport material are described.