Abstract:Four squaraine derivatives SQ, DISQ, MeSQ and DIMeSQ with different substitution indole modifications were synthesized through condensation reaction. Squaraine derivative is one kind of D-AD configuration dyes, which is formed by connecting squaraine with two electron-rich groups through conjugation. The squaraine derivatives were characterized by 1 H NMR, 13 C NMR and high resolution mass spectrometry. The photophysical properties of these squaraine derivatives were studied, such as UV-visible absorption, flu… Show more
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