MAGENTA DIAZO COLORING MATTER, COLOR FILTER, AND SOLID-STATE IMAGE PICKUP DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a new magenta diazo coloring matter improved in light resistance and a solid-state image pickup device equipped with a color filter containing it and having a longer life. SOLUTION: This coloring matter is one represented by formula I (wherein R1 to R4 are each H or a suitable substituent; R18 is an electron accepting group; R17 (when R15 and R16 are each of formula II) or R16 (when R16 and R17 are each of formula II) is a weak electron donating group or an electron accepting group; R6 to R11 are each OH, an electron accepting group, a weak electron donating group, H, or of formula II, depending on the relation to each other; and R19 and R20 are each H, alkyl or substituted alkyl). It has a chemical structure of which the positions of substituents in the diazo moiety where the electron density is low and the reaction with oxygen molecules hardly proceeds are determined by theoretical calculation with a supercomputer.