A pyrromethene-boron complex in one aspect of the present invention is a compound with a molecular weight of 1000 or more, represented by the following general formula (1), in which at least two of R1 to R6 are groups represented by the following general formula (2),
and in the general formula (1), X is C-R7 or N; R1 to R9, other than the groups represented by the following general formula (2), each are the same or different, and selected from the candidate group consisting of alkyl and other groups;
and in the general formula (2), L1 is selected from the candidate group consisting of oxygen and other groups; L2 is, for example, alkylene; when L2 is alkylene, the carbon atom bound to L1, in the alkylene group, is secondary or tertiary carbon; R101 is, for example, cyano; n is an integer of 0 to 5; m is an integer of 1 to 5; and m -(L2-(R101)n) each comprises three or more ring structures.
在本发明的一个方面,
吡咯烷-
硼络合物是一种分子量在 1000 或 1000 以上的化合物,由以下通式(1)表示,其中 R1 至 R6 中至少有两个是由以下通式(2)表示的基团、
在通式(1)中,X 是 C-R7 或 N;R1 至 R9 除由以下通式(2)代表的基团外,各自相同或不同,且选自由烷基和其他基团组成的候选基团组;
在通式(2)中,L1 选自由氧和其他基团组成的候选基团;
L2 例如是亚烷基;当
L2 是亚烷基时,在亚烷基中与 L1 结合的碳原子是仲碳或叔碳;R101 例如是
氰基;n 是 0 至 5 的整数;m 是 1 至 5 的整数;m -(
L2-(R101)n)各自包括三个或三个以上的环结构。