129464-19-3Relevant articles and documents
New Near Infrared Absorbing Metal Complex Dyes: Synthesis and Metallochromic Properties of Two Isomeric Ligands, 2-(Dimethylamino)naphtho( and )quinoline-7,12-diones
Yoshida, Katsuhira,Koujiri, Tetsunao,Sakamoto, Eriko,Kubo, Yuji
, p. 1748 - 1752 (1990)
The Diels-Alder reaction of 5,8-quinolinedione with p-(dimethylamino)styrenes gave new two kinds of isomeric dyes, 2-(dimethylamino)naphthoquinoline-7,12-diones and 2-(dimethylamino)naphthoquinoline-7,12-diones, which showed quite different metallochromic behaviors.Upon addition of metal salts, one of the two isomers showed drastic spectral changes to have an intense absorption band in near infrared region.The color-structure relations were investigated.