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- W4294310992 abstract "In order to meet the growing needs for the laser technology and optics industries, the goal is to find suitable fundamental building blocks with large nonlinear-optical (NLO) coefficients and birefringence for an excellent-performance NLO or birefringent system. Via preliminary investigations and calculations, it has been found that the planar π-conjugated group (C9H5O6)- possesses large polarizability anisotropy (δ) and hyperpolarizability (βmax), comparable to well-known groups such as (B3O6)3-, (C3N3O3)3-, etc. Herein, we report a new alkali-metal 3,5-dicarboxybenzoate, KC9H5O6(H2O) (KH2BTC), which crystallized in the acentric space group Pna21. Second-harmonic-generation (SHG) measurements of KH2BTC under 1064 nm laser radiation show that the SHG response of KH2BTC is 1.2 times that of KDP with type I phase-matching behavior. Birefringence measurements show that KH2BTC owns a large birefringence of about 0.372 at 550 nm. The band gap of KH2BTC obtained by ultraviolet (UV) diffuse-reflectance spectroscopy is 3.91 eV, indicating that KH2BTC has potential applications as UV NLO or birefringent materials. Theoretical calculation further confirmed that the impressive optical properties of KH2BTC are derived from the large polarizability anisotropy of the (C9H5O6)- anions." @default.
- W4294310992 created "2022-09-02" @default.
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- W4294310992 date "2022-09-02" @default.
- W4294310992 modified "2023-10-14" @default.
- W4294310992 title "KC<sub>9</sub>H<sub>5</sub>O<sub>6</sub>(H<sub>2</sub>O): A Promising UV Nonlinear-Optical Material with Large Birefringence Based on a π-Conjugated (C<sub>9</sub>H<sub>5</sub>O<sub>6</sub>)<sup>−</sup> Group" @default.
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- W4294310992 doi "https://doi.org/10.1021/acs.inorgchem.2c02521" @default.
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