TY - JOUR
T1 - Synthesis and optical characterization of new ketocyanine dyes with extended polymethine chaines
AU - Miltsov, Sergey
AU - Alonso-Chamarro, Julian
AU - Puyol, Mar
N1 - Publisher Copyright:
© 2020 Wiley Periodicals LLC.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85086269025&partnerID=8YFLogxK
U2 - 10.1002/jhet.4027
DO - 10.1002/jhet.4027
M3 - Article
AN - SCOPUS:85086269025
SN - 0022-152X
VL - 57
SP - 3193
EP - 3201
JO - Journal of Heterocyclic Chemistry
JF - Journal of Heterocyclic Chemistry
IS - 8
ER -