2023
DOI: 10.1002/cphc.202300710
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A Curious Case of Two‐Photon Absorption in n‐Helicene and n‐Phenylene, n=6–10: Why n=7 is Different?

Banana Tejendra,
Swati Singh Rajput,
M. Mehboob Alam

Abstract: Abstractn‐Helicenes and n‐Phenylenes are interesting examples of twisted molecules, where although the atoms are connected through conjugated ‐bonds, the ‐conjugation is largely hindered by the twisted nature of the bonds. Such structures provide a unique opportunity to study the effect of twisted ‐system on non‐linear optical properties. In this work, we studied the two‐photon absorption in donor‐acceptor substituted n‐helicenes and n‐phenylenes employing the state‐of‐the‐art RI‐CC2 method and reported a u… Show more

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