Multi-Dimensional Switching of Ring Currents in Nonplanar Chiral Aromatic Molecules by Ultrashort Linearly Polarized UV Laser Pulses

Abstract:

Nonplanar chiral aromatic ring molecules are candidates for use as ultrafast multi-dimensional optical switching devices. Nonplanar (P)-2, 2’-biphenol exhibits four patterns of π-electron rotations along the two phenol rings. It can induce two-dimensional coherent ring currents. Each rotational pattern can be driven by a coherent excitation of two quasi-degenerate electronic states using linearly polarized ultrashort UV pulses. We present the quantum dynamical simulation results of a four-step switching of the two-dimensional ring currents within 300 fs.

• Periodical: Key Engineering Materials (Volume 644)
• Pages: 106-109
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.644.106
• Online since: May 2015
• Authors: Hirobumi Mineo*, Sheng H. Lin, Yuichi Fujimura
• Keywords: (P)-2,2’-Biphenol, Coherent Excitation of Electronic States, Linearly Polarized Lasers, Ultrafast Optical Switching Devices, π-Electron Ring Current

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