An dye compound of the following formula (1):
wherein D represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; L represents ═CR
2
—, ═N—, or ═N—NH—; R
1
represents a monovalent substituent; R
2
represents a hydrogen atom or a cyano group; n indicates an integer of from 0 to 4; when n is 2 or more, then plural R
1
's may be the same or different.
以下是化合物的结构式(1):其中D代表取代或未取代的芳基或取代或未取代的杂环基;L代表═CR2—,═N—或═N—NH—;R1代表一价取代基;R2代表
氢原子或
氰基;n表示0至4的整数;当n为2或更多时,多个R1可以相同或不同。