59543-54-3Relevant academic research and scientific papers
Synthesis and optical characterization of new ketocyanine dyes with extended polymethine chaines
Miltsov, Sergey,Alonso-Chamarro, Julian,Puyol, Mar
, p. 3193 - 3201 (2020)
New symmetrical and unsymmetrical near-infrared absorbing ketocyanine-type dyes are synthesized and their optical characterization is done. The relationships between their structure and optical properties are discussed. The synthesized ketocyanine dyes show a positive solvatochromism and are poorly fluorescent. A new procedure for the preparation of N,N,N′,N′-tetramethylvinamidinium perchlorate, which was a very useful reagent for the synthesis of various heterocyclic compounds as well as for the preparation of cyanine dyes is developed.
