(Phenothiazinyl)Vinyl-Indolium Cationic Dyes

New 2-(2-(10H-phenothiazin-3yl)vinyl)-3H-indolium cationic dyes were successfully prepared by Knoevenagel condensation of 1,2,3,3-tetramethyl- 3H-indolium iodide with 10-methyl-10H-phenothiazine-3-carbaldehyde and 10H-phenothiazine-3-carbaldehyde respectively. Their optical properties were emphasize...

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Veröffentlicht in:	Studia Universitatis Babeș-Bolyai. Chemia 2018-01, Vol.63 (2), p.117-124
Hauptverfasser:	Brém, Balázs, Colange, Quentin, Gal, Emese, Porumb, Dan, Cristea, Castelia, Găină, Luiza, Lovász, Tamás, Silaghi-Dumitrescu, Luminiţa
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical properties Dyes and dyeing Production processes
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Beschreibung
Zusammenfassung:	New 2-(2-(10H-phenothiazin-3yl)vinyl)-3H-indolium cationic dyes were successfully prepared by Knoevenagel condensation of 1,2,3,3-tetramethyl- 3H-indolium iodide with 10-methyl-10H-phenothiazine-3-carbaldehyde and 10H-phenothiazine-3-carbaldehyde respectively. Their optical properties were emphasized by UV-Vis absorption spectroscopy. The position of their characteristic intramolecular charge transfer absorption maxima is situated in the visible range (550-630 nm), exhibiting solvatochromism induced by solvent polarity. Experimental evidences of linear optical properties were completed by a theoretical DFT computational study. Key words: 10H-phenothiazine, indolium salts, cyanine dyes
ISSN:	1224-7154 2065-9520
DOI:	10.24193/subbchem.2018.2.11