Hole transport promoting material, material for light receiving element, cyano compound, and organic light receiving element

A light receiving element material comprising a compound represented by the following general formula (1) or (2):

• wherein
• Y1, Y2, Y3, Y4, Y5 and Y6 each independently represent a nitrogen atom or C—H;
• at least one of Y′ or Y2 is a nitrogen atom;
• at least one of Y3, Y4, Y5 or Y6 is a nitrogen atom;
• Ar1, Ar2 and Ar3 each independently represent:
• a hydrogen atom,
• a cyano group,
• a fluoro group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• n represents an integer of 1 to 4;
• and
• X1 is a divalent group represented by the following formula (a) or (b):
• wherein Ar4 and Ar5 each independently represent:
• a cyano group,
• a fluoro group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group.

A cyano compound represented by the following general formula (3), general formula (4), general formula (5) or general formula (6):

• wherein
• Y1, Y2, Y3, Y4, Y5 and Y6 each independently represent a nitrogen atom or C—H:
• at least one of Y1 or Y2 is a nitrogen atom;
• at least one of Y3, Y4, Y5, or Y6 is a nitrogen atom;
• Ar6 represents:
• a cyano group,
• a fluoro group, a chloro group, a bromo group, an iodine group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• provided that when Y5 and Y6 are C—H, Ar6 may be a hydrogen atom, and
• Ar2 and Ar3 each independently represent:
• a hydrogen atom,
• a cyano group,
• a fluoro group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group.

An organic light receiving element,

• comprising a first electrode and a second electrode, and
• having an organic layer between the first electrode and the second electrode,
• the organic layer comprising at least a light receiving layer, a hole transporting layer, and a hole transport promoting layer,
• the hole transport promoting layer comprising a compound having a partial structure represented by the following formula (Q):
• wherein portions in which solid lines and broken lines are parallel each independently represent a single bond or a double bond, and * represents a bond.

An organic light receiving element,

• comprising a first electrode and a second electrode, and having an organic layer between the first electrode and the second electrode,
• the organic layer comprising at least a light receiving layer, a hole transporting layer, and a hole transport promoting layer,
• the hole transport promoting layer comprising a compound having a partial structure represented by the following formula (1) or (2):
• wherein
• Y1, Y2, Y3, Y4, Y5 and Y6 each independently represent a nitrogen atom or C—H;
• at least one of Y′ or Y2 is a nitrogen atom;
• at least one of Y3, Y4, Y5 or Y6 is a nitrogen atom;
• Ar1, Ar2 and Ar3 each independently represent:
• a hydrogen atom,
• a cyano group,
• a fluoro group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group,
• n represents an integer of 1 to 4;
• and
• X1 is a divalent group represented by the following formula (a) or (b):
• wherein Art and Ar5 each independently represent:
• a hydrogen atom,
• a fluoro group,
• a fluoroalkyl group,
• an aryl group having 6 to 18 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group;
• or
• a heteroaryl group having 3 to 17 carbon atoms and being optionally substituted with a fluoro group, a fluoroalkyl group, or a cyano group.