| abstract |
A carrier comprising at least one of the following (A) and at least one of (B) below. (A) -conjugator group and at least one anchor group, and the? -Conjugator group and all of the anchor groups are connected by a spacer having 5 to 20 atoms having at least one alkylene. (B) a π-conjugated group and at least one anchor group, and the π-conjugated group and the at least one anchor group are connected by a spacer of 1 to 4 atoms having a direct bond or at least one alkylene. (A) and (B), the spacer may have a branched chain or cyclic structure while being composed of a carbon atom or a carbon atom and an oxygen atom under a predetermined condition (see specification). |