A carrier system of the invention carries a dye (A) and a co-adsorbent (B) represented by general formula (1):
wherein, ring A represents a 5- or 6-membered heterocycle and may further be fused; a hydrogen atom in the ring A may be replaced by a halogen atom, a cyano group, a nitro group, an -OR2 group, an -SR2 group, or a hydrocarbon group that may have a substituent; Z represents a divalent aliphatic hydrocarbon group that is interrupted zero to three times by -O- etc.; Z1 represents a divalent aromatic group; R1 represents a carboxylic acid group, a sulfonic acid group, a phosphoric acid group, or a phosphonic acid group; R2 and R3 each represent a hydrogen atom or a hydrocarbon group that may have a substituent; Anm- represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient for keeping the electrical charge neutral
本发明的载体系统含有
染料(A)和由通式(1)表示的共吸附剂(B):
其中,环 A 代表 5 元或 6 元杂环,并可进一步融合;环 A 中的氢原子可被卤素原子、
氰基、硝基、-OR2 基、-SR2 基或可具有取代基的烃基取代;Z 代表二价脂肪族烃基,该烃基被-O- 等中断 0 至 3 次;Z1 代表二价芳香族基团;R1 代表
羧酸基团;Z2 代表
羧酸基团;Z3 代表
羧酸基团;Z4 代表
羧酸基团;Z5 代表
羧酸基团;Z6 代表
羧酸基团;Z7 代表
羧酸基团;Z8 代表
羧酸基团;Z9 代表
羧酸基团。Z1 代表二价芳香族基团;R1 代表
羧酸基团、
磺酸基团、
磷酸基团或
膦酸基团;R2 和 R3 分别代表氢原子或可带有取代基的烃基团;Anm- 代表 m 价阴离子;m 代表 1 或 2 的整数;p 代表保持电荷中性的系数。