Lithium-doped cycloparaphenylene

Water-triggered NLO switch

A water-triggerable second-order non-linear optical molecular switch, integrating lithium doping and unique π structure.

Zhao, Yaoxiao · Li, Mengyang · Zhao, Xiang · Yuan, Kun · Chen, Weixing

Cell Reports Physical Science 2023

Advantages

Both Li-[10]CPP and [10]CPP-Li exhibit significantly improved second-order NLO properties compared to [10]CPP

Li-[10]CPP has lower energy than [10]CPP-Li in gas phase, while the opposite in water

One-electron transfer and non-covalent cation-π interaction exist between Li and [10]CPP