Abstract A family of dyes (L 1–L 6) that contain a thiazolylazo group as signalling subunit and several macrocyclic cavities with different ring sizes and type and number of heteroatoms as binding sites has been synthesized and characterized. Solutions of L 1–L 6 in acetonitrile show broad and structureless absorption bands in the 554–577 nm range with typicalmolar absorption coefficients that range from 20000 to 32000 M–1 cm–1. A detailed ...
![N,N-dimethyl-4-[(5-nitrothiazol-2-yl)azo]aniline Structure](https://image.chemsrc.com/caspic/410/62143-25-3.png)