An approach to novel NIR dyes utilizing α-effect donor groups was written by Langhals, Heinz;Blanke, Patrick. And the article was included in Dyes and Pigments in 2003.Reference of 110590-84-6 This article mentions the following:
Light-fast and strongly fluorescent near-IR-absorbing dyes have been obtained by the core-substitution of perylene bisimides with joined nitrogen donor groups. Emission has been recorded beyond 1100 nm. Complete Gaussian analyses were successful both for the absorption and fluorescence spectra. In the experiment, the researchers used many compounds, for example, 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6Reference of 110590-84-6).
2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. Quinoline and its derivatives are widely used as fungicides, biological agents, antibiotics, alkaloids, dyes, rubber chemicals and flavoring agents. Isoquinoline-type alkaloids show biological activities similar to those of morphinane-, protoberberine-, and benzophenanthridine-type alkaloids.Reference of 110590-84-6
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem