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Updated: Sep 27, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
PO(CH2CH2CF3)3: an organic ultraviolet nonlinear optical material without any anionic group
Liting Lin1, Xiaoqian Li1, Kun Qian1
1College of Pharmacy, Jiangxi University of Traditional Chinese Medicine Nanchang 330004 P. R. China qk0876@hotmail.com.
Abstract:
Researchers have focused on inorganic compounds to design deep ultraviolet (UV) nonlinear optical (NLO) materials according to anionic group theory, such as CO3 2-, NO3 -, SO4 2- and PO4 3- anions. Here we provide a new route to design an UV NLO material using a pure organic compound without any anions. Compound PO(CH2CH2CF3)31, an UV NLO material, has light transmittance up to 83% in the UV spectral region which is larger than most inorganic UV NLO materials. It also displays a wide transparent band, a SHG response of 0.30 × KH2PO4, and a cut-off edge below 200 nm. It displays ladder-like nonlinear optical properties weakened by 1.4 times at around T c, making compound 1 a potential temperature-controlled UV NLO material. Theoretical analyses reveal that the nonlinear optical properties are primarily due to O-2p, P-2p and F-2p.
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