Synthesis and electrochemical properties of symmetric squarylium dyes containing diarylamine

• Symmetric squarylium dyes containing arylamine were newly synthesized in a one-step reaction.
• Several of our synthesized squarylium dyes had improved electrochemical properties.
• They might be a promising and an easy modifiable π-conjugate core block.

We studied the synthesis and electrochemical properties of symmetric squarylium dyes (SQDs) containing diarylamine with various structures. It was shown that several of our synthesized SQDs had improved electrochemical properties and might be a promising and an easy modifiable π-conjugate core block of active materials for electroactive and photoactive devices.

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