Study on the Fluorescent Activity of N²-Indolyl-1,2,3-triazole

A new type of blue emitter, N²-Indolyl-1,2,3-triazoles (NITs), with the λ_max ranging from 420-480 nm and the Stokes shift from 89-143 nm, were synthesized through the coupling reaction of indoles with triazole derivatives. The influence of different substitution patterns on the optical properties (efficiency, excitation, and emission wavelengths) of the NITs was investigated. In addition, one palladium complex were synthesized by using NITs as the ligands, which, however, exhibited no fluorescent activity, but did show the enhanced co-planarity. Lastly, two bio-active molecule derivatives were explored for the potential use of these novel dyes in related chemical and biological applications.