New bis[3-(4′-dialkylaminophenylimino)pyrido[2,3-a]phenothiazine]nickel(II) complexes with near-infrared absorptions
Abstract
New nickel(II) complex dyes containing N,N-bidentate pyrido[2,3-a]phenothiazine-type ligands have been prepared; these dyes have an intense near-infrared absorption band in the range of 782–838 nm.