公开(公告)号：US20050123849A1

公开(公告)日：2005-06-09

申请号：US10983020

申请日：2004-11-05

申请人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katritzky ,  Ritu Jain ,  Rexiat Maimait

发明人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katritzky ,  Ritu Jain ,  Rexiat Maimait

IPC分类号： C07C251/84 ,  C07C317/34 ,  C07D207/34 ,  C07D231/38 ,  C07D249/18 ,  C07D257/06 ,  C07D333/48 ,  G03G5/06 ,  G03G5/10 ,  G03G9/12 ,  G03G15/10 ,  C07D231/18

CPC分类号： C07D231/38 ,  C07C251/84 ,  C07C317/34 ,  C07C2603/18 ,  C07D207/34 ,  C07D249/18 ,  C07D257/06 ,  C07D333/48 ,  G03G5/0616 ,  G03G5/0618 ,  G03G5/062 ,  G03G5/0661

摘要： This invention relates to a novel organophotoreceptor that includes: (a) a charge transport material comprising a fluorenone hydrazone having a) least two fluorenone alkylsulfonylphenylhydrazone groups, b) at least two fluorenone pyrrolylhydrazone groups, c) at least two fluorenone benzotriazolylhydrazone groups, d) at least two fluorenone sulfolanylhydrazone groups, e) at least two fluorenone pyrazolylhydrazone groups, f) at least two fluorenone naphthylhydrazone groups, g) at least two fluorenone tetrazolylhydrazone groups, h) at least two fluorenone stilbenylhydrazone groups, or i) at least two fluorenone(9H-fluoren-9-ylidene)benzylhydrazone groups. Some of these fluoreneones may be represented by the formula where n is an integer between 2 and 6, inclusive; R1 is hydrogen, alkyl, or aryl; R2 is alkylsulfonylphenyl or one of its derivatives; X is a linking group having the formula —(CH2)m—, branched or linear. The compounds may form electrostatic imaging systems in combination with (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 本发明涉及一种新型有机光感受器，其包括：（a）电荷传输材料，其包含芴酮腙，其具有a）至少两个芴酮烷基磺酰基苯腙基团，b）至少两个芴酮吡咯基腙基团，c）至少两个芴酮苯并三唑基腙基团，d） 至少两个芴酮砜基腙基团，e）至少两个芴酮吡唑基腙基团，f）至少两个芴酮萘基腙基团，g）至少两个芴酮四唑腙基团，h）至少两个芴酮茋基腙基团，或i）至少两个芴酮 （9H-芴-9-亚基）苄腙基团。 这些芴酮中的一些可以由下式表示：其中n是2和6之间的整数，包括端值在内; R 1是氢，烷基或芳基; R 2是烷基磺酰基苯基或其衍生物之一; X是具有下式的连接基团 - （CH 2 CH 2）m - 支链或直链。 所述化合物可以与（b）产生电荷的化合物组合形成静电成像系统; 和（c）导电基板。

公开(公告)号：US20050084784A1

公开(公告)日：2005-04-21

申请号：US10982547

申请日：2004-11-04

申请人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katritzky ,  Ritu Jain ,  Rexiat Maimait ,  Anatoliy Vakulenko

发明人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katritzky ,  Ritu Jain ,  Rexiat Maimait ,  Anatoliy Vakulenko

IPC分类号： G03G5/06 ,  G03G5/10 ,  G03G9/12 ,  G03G5/05

CPC分类号： G03G5/0612 ,  G03G5/0616

摘要： An organophotoreceptor that includes: (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, (9H-fluoren-9-ylidene)benzyl group, alkylsulfonylphenyl, or stilbenyl, B is selected from hydrogen, alkyl group, and an aryl group, with the proviso that when A is naphthyl, B is naphthyl; or where R1 is selected from the group consisting of N-pyrrolyl, N-pyrazolyl, N-tetrazolyl, N-indolyl, N-carbazolyl, N-triazolyl, N-imidazolyl, N-benzimidazolyl, N-indazolyl, and N-benzotriazolyl group, and R3 is a 9-fluorenone group. (b) a charge generating compound; and (c) an electrically conductive substrate

摘要翻译： 一种有机光感受器，其包括：（a）具有下式的电荷传输材料：其中A选自杂环基，萘基，（9H-芴-9-亚基）苄基，烷基磺酰基苯基或茋基，B选自氢，烷基 基团和芳基，条件是当A是萘基时，B是萘基; 或其中R 1选自N-吡咯基，N-吡唑基，N-四唑基，N-吲哚基，N-咔唑基，N-三唑基，N-咪唑基，N-苯并咪唑基， N-吲唑基和N-苯并三唑基，R 3是9-芴酮基团。 （b）电荷产生化合物; 和（c）导电基板

公开(公告)号：US20050112490A1

公开(公告)日：2005-05-26

申请号：US10976386

申请日：2004-10-29

申请人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katrtzky ,  Ritu Jain ,  Rexiat Maimait

发明人： Kam Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan Katrtzky ,  Ritu Jain ,  Rexiat Maimait

IPC分类号： C07D209/86 ,  C07D403/12 ,  C07D409/12 ,  G03G5/06 ,  G03G5/10 ,  G03G15/08 ,  G03G15/14

CPC分类号： C07D403/12 ,  C07D209/86 ,  C07D409/12 ,  G03G5/06 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/062 ,  G03G5/0627 ,  G03G5/0629 ,  G03G5/0631 ,  G03G5/0633 ,  G03G5/0642

摘要： 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  where R1 and R2 are selected so that R1 and R2 form, with the included nitrogen atom, a group selected from the group consisting of heterocyclic rings, aromatic rings, and dinaphthylamine; or R1 comprises an aryl group and R2 comprises a group selected from the group consisting of sulfolanyl, 4-(9H-fluoren-9-ylidene)benzyl, pyrrolyl, pyrazolyl, benzotriazolyl, stilbenyl, tetrazolyl; or R1 comprises hydrogen, an alkyl group, an aryl group and R2 comprises sulfonylphenyl.  R3 is hydrogen, an alkyl group, an aryl group, a heterocyclic group or a hydrocarbon group; and  Q is a 3-carbazole group; (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 一种新的电荷传输化合物，使用该新化合物和有机光感受器的新方法包括：（a）具有下式的新型电荷传输化合物，其中R 1和R 2均为 选择使得R 1和R 2 2与所含的氮原子一起形成选自杂环，芳环和二萘胺的基团; 或R 1包括芳基，R 2 2包括选自环丁砜基，4-（9H-芴-9-亚基）苄基，吡咯基， 吡唑基，苯并三唑基，二苯乙烯基，四唑基; 或R 1包括氢，烷基，芳基和R 2 O 2包括磺酰基苯基。 R 3是氢，烷基，芳基，杂环基或烃基; Q为3-咔唑基; （b）电荷产生化合物; 和（c）导电基板。

公开(公告)号：US07063928B2

公开(公告)日：2006-06-20

申请号：US10983020

申请日：2004-11-05

申请人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

发明人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

IPC分类号： G03G15/10 ,  C07D231/18

CPC分类号： C07D231/38 ,  C07C251/84 ,  C07C317/34 ,  C07C2603/18 ,  C07D207/34 ,  C07D249/18 ,  C07D257/06 ,  C07D333/48 ,  G03G5/0616 ,  G03G5/0618 ,  G03G5/062 ,  G03G5/0661

摘要： This invention relates to a novel organophotoreceptor that includes: (a) a charge transport material comprising a fluorenone hydrazone having a) least two fluorenone alkylsulfonylphenylhydrazone groups, b) at least two fluorenone pyrrolylhydrazone groups, c) at least two fluorenone benzotriazolylhydrazone groups, d) at least two fluorenone sulfolanylhydrazone groups, e) at least two fluorenone pyrazolylhydrazone groups, f) at least two fluorenone naphthylhydrazone groups, g) at least two fluorenone tetrazolylhydrazone groups, h) at least two fluorenone stilbenylhydrazone groups, or i) at least two fluorenone (9H-fluoren-9-ylidene)benzylhydrazone groups. Some of these fluoreneones may be represented by the formula where n is an integer between 2 and 6, inclusive; R1 is hydrogen, alkyl, or aryl; R2 is alkylsulfonylphenyl or one of its derivatives; X is a linking group having the formula —(CH2)m—, branched or linear. The compounds may form electrostatic imaging systems in combination with (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 本发明涉及一种新型有机光感受器，其包括：（a）电荷传输材料，其包含芴酮腙，其具有a）至少两个芴酮烷基磺酰基苯基腙基团，b）至少两个芴酮吡咯基腙基团，c）至少两个芴酮苯并三唑基腙基团，d） 至少两个芴酮砜基腙基团，e）至少两个芴酮吡唑基腙基团，f）至少两个芴酮萘基腙基团，g）至少两个芴酮四唑腙基团，h）至少两个芴酮茋基腙基团，或i）至少两个芴酮 （9H-芴-9-亚基）苄腙基团。 这些芴酮中的一些可以由下式表示：其中n是2和6之间的整数，包括端值在内; R 1是氢，烷基或芳基; R 2是烷基磺酰基苯基或其衍生物之一; X是具有下式的连接基团 - （CH 2 CH 2）m - 支链或直链。 所述化合物可以与（b）产生电荷的化合物组合形成静电成像系统; 和（c）导电基板。

公开(公告)号：US07479357B2

公开(公告)日：2009-01-20

申请号：US10243960

申请日：2002-09-13

申请人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait ,  Anatoliy V. Vakulenko

发明人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait ,  Anatoliy V. Vakulenko

IPC分类号： G03G5/047

CPC分类号： G03G5/0612 ,  G03G5/0616

摘要： An organophotoreceptor that includes: (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, alkylsulfonylphenyl, stilbenyl or the group X, wherein X is represented by the formula B is selected from hydrogen, alkyl group, and an aryl group, with the proviso that when A is naphthyl, B is naphthyl; or where R1 is selected from the group consisting of N-pyrrolyl, N-pyrazolyl, N-tetrazolyl, N-indolyl, N-carbazolyl, N-triazolyl, N-imidazolyl, N-benzimidazolyl, N-indazolyl, and N-benzotriazolyl group, and R3 is a 9-fluorenone group. (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 一种有机光感受器，其包括：（a）具有下式的电荷传输材料：其中A选自杂环基，萘基，烷基磺酰基苯基，茋基或X基团，其中X由式B表示，选自氢，烷基， 和芳基，条件是当A为萘基时，B为萘基; 或其中R 1选自N-吡咯基，N-吡唑基，N-四唑基，N-吲哚基，N-咔唑基，N-三唑基，N-咪唑基，N-苯并咪唑基，N-吲唑基和N-苯并三唑基 组，R3为9-芴酮组。 （b）电荷产生化合物; 和（c）导电基板。

公开(公告)号：US07358014B2

公开(公告)日：2008-04-15

申请号：US10215359

申请日：2002-08-09

申请人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

发明人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

IPC分类号： G03G5/047

CPC分类号： C07D403/12 ,  C07D209/86 ,  C07D409/12 ,  G03G5/06 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/062 ,  G03G5/0627 ,  G03G5/0629 ,  G03G5/0631 ,  G03G5/0633 ,  G03G5/0642

摘要： 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 where R1 and R2 are selected so that R1 and R2 form, with the included nitrogen atom, a group selected from the group consisting of heterocyclic rings, aromatic rings, and dinaphthylamine; or R1 comprises an aryl group and R2 comprises a group selected from the group consisting of sulfolanyl, pyrrolyl, pyrazolyl, benzotriazolyl, stilbenyl, tetrazolyl, and group A, wherein group A is represented by the structure or R1 comprises hydrogen, alkyl group, aryl group and R2 comprises sulfonylphenyl. R3 is hydrogen, alkyl group, aryl group, a heterocyclic group or a hydrocarbon group; and Q is a 3-carbazole group; (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 一种新的电荷传输化合物，使用该新化合物和有机光感受器的新方法包括：（a）具有下式的新型电荷传输化合物，其中R 1和R 2均为 选择使得R 1和R 2 2与所含的氮原子一起形成选自杂环，芳环和二萘胺的基团; 或R 1包括芳基，R 2 2包括选自环丁砜基，吡咯基，吡唑基，苯并三唑基，茋基，四唑基和基团A的基团，其中 基团A由结构表示，或者R 1包括氢，烷基，芳基，R 2包括磺酰基苯基。 R 3是氢，烷基，芳基，杂环基或烃基; Q为3-咔唑基; （b）电荷产生化合物; 和（c）导电基板。

公开(公告)号：US06905804B2

公开(公告)日：2005-06-14

申请号：US10349811

申请日：2003-01-22

申请人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

发明人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katritzky ,  Ritu Jain ,  Rexiat Maimait

IPC分类号： C07C251/84 ,  C07C317/34 ,  C07D207/34 ,  C07D231/38 ,  C07D249/18 ,  C07D257/06 ,  C07D333/48 ,  G03G5/06 ,  G03G5/10 ,  G03G9/12 ,  G03G5/047

CPC分类号： C07D231/38 ,  C07C251/84 ,  C07C317/34 ,  C07C2603/18 ,  C07D207/34 ,  C07D249/18 ,  C07D257/06 ,  C07D333/48 ,  G03G5/0616 ,  G03G5/0618 ,  G03G5/062 ,  G03G5/0661

摘要： This invention relates to a novel organophotoreceptor that includes: (a) a charge transport material comprising a fluorenone hydrazone having a) at least two fluorenone alkylsulfonylphenylhydrazone groups, b) at least two fluorenone pyrrolylhydrazone groups, c) at least two fluorenone benzotriazolylhydrazone groups, d) at least two fluorenone sulfolanylhydrazone groups, e) at least two fluorenone pyrazolylhydrazone groups, f) at least two fluorenone naphthylhydrazone groups, g) at least two fluorenone tetrazolylhydrazone groups, h) at least two fluorenone stilbenylhydrazone groups, or i) at least two fluorenone (9H-fluoren-9-ylidene)benzylhydrazone groups. Some of these fluoreneones may be represented by the formula where n is an integer between 2 and 6, inclusive; R1 is hydrogen, an alkyl group, or an aryl group; R2 is an alkylsulfonylphenyl or one of its derivatives; X is a linking group. The compounds may form electrostatic imaging systems in combination with (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 本发明涉及一种新型有机光感受器，其包括：（a）电荷传输材料，其包含芴酮腙，其具有a）至少两个芴酮烷基磺酰基苯基腙基团，b）至少两个芴酮吡咯基腙基团，c）至少两个芴酮苯并三唑基腙基团，d ）至少两个芴酮环腙基腙基团，e）至少两个芴酮吡唑基腙基团，f）至少两个芴酮萘基腙基团，g）至少两个芴酮四唑腙基团，h）至少两个芴酮茋基腙基团，或i）至少两个 芴酮（9H-芴-9-亚基）苄腙基团。 这些芴酮中的一些可以由下式表示：其中n是2和6之间的整数，包括端值在内; R 1是氢，烷基或芳基; R 2是烷基磺酰基苯基或其衍生物之一; X是连接组。 所述化合物可以与（b）产生电荷的化合物组合形成静电成像系统; 和（c）导电基板。

公开(公告)号：US06696209B2

公开(公告)日：2004-02-24

申请号：US10289233

申请日：2002-11-06

申请人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katrizky ,  Ritu Jain ,  Anatoily Vakulenko

发明人： Kam W. Law ,  Nusrallah Jubran ,  Zbigniew Tokarski ,  Alan R. Katrizky ,  Ritu Jain ,  Anatoily Vakulenko

IPC分类号： G03G5047

CPC分类号： G03G5/047 ,  C07C317/34 ,  C07C2603/18 ,  G03G5/0616 ,  G03G5/062 ,  G03G5/0629 ,  G03G5/0631 ,  G03G5/0633

摘要： An organophotoreceptor that includes: (a) a charge transport compound having the formula  where R1 and R2 are, independently, a fluorenyl group; R3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and X is a sulfonyldiphenylene group; (b) a charge generating compound; and (c) an electrically conductive substrate.

摘要翻译： 一种有机光感受器，其包括：（a）具有式R 1和R 2的电荷传输化合物独立地为芴基; R 3和R 4独立地为氢，烷基，芳基或杂环基; 和X是磺酰基二亚苯基;（b）电荷产生化合物; 和（c）导电基板。

公开(公告)号：US20050069794A1

公开(公告)日：2005-03-31

申请号：US10671172

申请日：2003-09-25

申请人： Nusrallah Jubran ,  Zbigniew Tokarski ,  Kam Law

发明人： Nusrallah Jubran ,  Zbigniew Tokarski ,  Kam Law

IPC分类号： C07C251/84 ,  C07C317/22 ,  C07C327/26 ,  C07C327/30 ,  C07D285/12 ,  C07D285/125 ,  G03G5/06 ,  G03G9/12 ,  G03G5/05

CPC分类号： G03G5/0616 ,  C07C251/84 ,  C07C317/22 ,  C07C327/26 ,  C07C2603/18 ,  C07D285/125 ,  G03G5/0603 ,  G03G5/0607 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/062 ,  G03G5/0633

摘要： Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where n is an integer between 2 and 6, inclusive; R1 and R2 are, independently, an alkyl group, an alkaryl group, or an aryl group with the proviso that neither R1 nor R2 is a naphthyl group, a stilbenyl group, alkylsulfonylphenyl group or a (9H-fluoren-9-ylidene)benzyl group; R3 and R4 are, independently, H, halogen, carboxyl, hydroxyl, thiol, cyano, nitro, aldehyde group, ketone group, an ether group, an ester group, a carbonyl group, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups can be optionally replaced by O, S, C═O, O=S=O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR5 group, a CHR6 group, or a CR7R8 group where R5, R6, R7, and R8 are, independently, H, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 10, an aromatic group, a cycloalkyl group, a heterocyclic group, or a NR9 group where R9 is hydrogen atom, an alkyl group, or aryl group, wherein Y has a structure selected to form n bonds with the corresponding X groups; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

摘要翻译： 改进的有机光感受器包括在导电衬底上的导电衬底和光电导元件，光电导元件包括：（a）具有下式的电荷传输材料，其中n是2和6之间的整数，包括端值; R1和R2独立地是烷基，烷芳基或芳基，条件是R1和R2都不是萘基，茋基，烷基磺酰基苯基或（9H-芴-9-亚基）苄基 组; R 3和R 4独立地是H，卤素，羧基，羟基，硫醇，氰基，硝基，醛基，酮基，醚基，酯基，羰基，烷基，烷芳基或芳基 组; X是具有式 - （CH2）m-，分支或直链的连接基团，其中m是0和20之间的整数，包括1和20个，并且一个或多个亚甲基可以任选地被O，S，C = O，O = S = O，杂环基，芳基，氨基甲酸酯，脲，酯基，NR5基，CHR6基或CR7R8基，其中R5，R6，R7和R8独立地为H ，烷基，烷芳基，杂环基或芳基; 并且Y包含键，C，N，O，S，支链或线性 - （CH 2）p基团，其中p是0和10之间的整数，芳族基团，环烷基，杂环基或NR 9 基团，其中R9是氢原子，烷基或芳基，其中Y具有选择与相应的X基团形成n键的结构; 和（b）电荷产生化合物。 描述相应的电子照相设备和成像方法。

公开(公告)号：US20050069793A1

公开(公告)日：2005-03-31

申请号：US10670483

申请日：2003-09-25

申请人： Nusrallah Jubran ,  Zbigniew Tokarski ,  Kam Law

发明人： Nusrallah Jubran ,  Zbigniew Tokarski ,  Kam Law

IPC分类号： C07C251/88 ,  C07C327/26 ,  G03G5/06 ,  G03G9/12 ,  G03G5/05 ,  C07C251/54

CPC分类号： G03G5/0633 ,  G03G5/0616 ,  G03G5/0618 ,  G03G5/062

摘要： Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where n is an integer between 2 and 6, inclusive; R1 and R2 are, independently, H, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; R3 and R4 are, independently, H, halogen, carboxyl, hydroxyl, thiol, cyano, nitro, aldehyde group, ketone group, an ether group, an ester group, a carbonyl group, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups can be optionally replaced by O, S, C═O, O═S═O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR5 group, a CHR6 group, or a CR7R8 group where R5, R6, R7, and R8 are, independently, H, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and Y is a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 10 and where one or more of the hydrogen atoms in the —(CH2)p— may be optionally removed to provide bond positions to enable n to have a higher value than 2, an aromatic group, a cycloalkyl group, a heterocyclic group, or a NR9 group where R9 is hydrogen atom, an alkyl group, or aryl group Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 10, an aromatic group, a cycloalkyl group, a heterocyclic group, or a NR9 group where R9 is hydrogen atom, an alkyl group, or aryl group, wherein Y has a structure selected to form n bonds with the corresponding X groups; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.