Material for photoelectric conversion element for imaging, and photoelectric conversion element

A material for a photoelectric conversion device for imaging, the material comprising a thiophene derivative represented by the following general formula (1):

• wherein A and B each independently represent hydrogen, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 18 carbon atoms, or a substituted or unsubstituted linked aromatic group in which two to four of these aromatic groups are linked, and at least one of A or B has a condensed-ring structure having 12 or more carbon atoms represented by the following general formula (2) or (3);
• L1, L2, L3, L4, L5, and L6 each independently represent a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 18 carbon atoms;
• T represents a substituted or unsubstituted thiophene ring;
• “a” represents the number of repetition and represents an integer of 1 to 4;
• “m”, “o”, “p”, “q”, “r”, and “s” represent the number of linkage and each independently represent an integer of 0 or 1;
• and “n” and “t” represent the number of substitution and each independently represent 1 or 2,
• wherein “*” represents a bonding position at which the formula (2) or (3) is substituted, the condensed-ring structures represented by the formulae (2) and (3) optionally have a substituent, and the formula (2) is optionally condensed with the substituent to form a condensed ring;
• X represents N—Ra, O, S, or C—(Rb)2, Ra and Rb each independently represent a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 18 carbon atoms, or a substituted or unsubstituted linked aromatic group in which two to four of these aromatic groups are linked, and Ra and Rb are optionally bonded to the formula (2) to form a condensed ring.