The proposed synthesis would create a photochromic molecule to absorb in the near infrared region on the electromagnetic spectrum. This would be accomplished by creating a large hyperpolarizable molecule containing asymmetrically arranged electron donating thiophene rings and cyano withdrawing groups. Many key intermediates for the synthesis of already been created, including: methanone di-2-thienyl and its related propargyl alcohol, 6-hydroxy-2-napthalenecarboxaldehyde, in addition to another novel photochromic variant which could potentially absorb in the near IR region with modification. The final product of the synthesis would differ from present photochromic molecules by its ability to absorb near infrared light instead of visible light.

Synthesis of a near infrared absorbing photochrome

245th National Meeting (2013)

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