METHOD FOR CONTROLLING CONFORMATION OF PIGMENT MOLECULE OR ABSORPTION SPECTRUM, AND CONTROL TYPE PIGMENT MOLECULE

摘要

PROBLEM TO BE SOLVED: To provide a method capable of controlling the absorption spectrum of a pigment which is confirmed to be excellent in photoelectric transfer efficiency on some level.SOLUTION: There is provided a method for controlling a conformation derived from a torsional angle A1 of a single bond connecting =A to the benzene ring of a pigment molecule represented by formula (1), specifically a method for controlling the difference of the absorption spectrum depending on the conformation by introducing a modifying group to either Ror Rto stabilize the torsional angle A1 at an O° side or 180° side.