title: Novel semisquaraine regioisomers: isolation, divergent chemical reactivity and photophysical properties.
abstract: A zwitterionic semisquaraine 1,3-regioisomer which exhibits distinct photophysical properties and chemical reactivity was isolated. Uniquely, this isomer has been identified as the reactive intermediate in the squaraine dye formation reaction rather than the neutral 1,2-isomer and opens up new avenues for the synthesis of novel dyes for optoelectronic applications.
authors: Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST-CSIR), Trivandrum 695 019, India.
authors: Rekha R
authors: RR
authors: Avirah
authors: Kuthanapillil
authors: K
authors: Jyothish
authors: Cherumuttathu H
authors: CH
authors: Suresh
authors: Eringathodi
authors: E
authors: Suresh
authors: Danaboyina
authors: D
authors: Ramaiah
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D018360:Crystallography, X-Ray; D003503:Cyclobutanes / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification; D008968:Molecular Conformation; D010636:Phenols / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification; D013237:Stereoisomerism; D013816:Thermodynamics
chemical_list: D004396:Coloring Agents; D003503:Cyclobutanes; D010636:Phenols; C480596:squaraine