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Engineering an Excellent β ‐BaB 2 O 4 ‐Inspired UV Nonlinear Optical Material Through Secondary Building Unit Substitution
Author(s) -
Wu Lingli,
Lin Chensheng,
Tian Haotian,
Yan Tao,
Li BingXuan,
Fan Huixin,
Fan Yujie,
Yang Shunda,
Luo Min
Publication year - 2025
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202500877
Subject(s) - materials science , nonlinear optical , birefringence , evaporation , anisotropy , nonlinear optics , second harmonic generation , computer science , optoelectronics , optics , nonlinear system , physics , laser , thermodynamics , quantum mechanics
Abstract The development of nonlinear optical (NLO) crystals with tailored properties has been a long‐standing pursuit, yet remains challenging to achieve. Herein, we report the successful synthesis of a novel high‐performance UV NLO material, Li 3 [Be 3 (OH) 3 (C 3 H 2 O 4 ) 3 ]·7H 2 O (LBOC), by substituting the [B 3 O 6 ] functional building units (FBUs) in the classic β ‐BaB 2 O 4 ( β ‐BBO) with meticulously designed [Be 3 (OH) 3 (C 3 H 2 O 4 ) 3 ] 3− secondary building units (SBUs). The [Be 3 (OH) 3 (C 3 H 2 O 4 ) 3 ] 3− SBUs within LBOC preserve the ordered arrangement of the [B 3 O 6 ] FBUs found in β ‐BBO, enabling LBOC to inherit the strong second harmonic generation (SHG) response from β ‐BBO. Additionally, the increased dimensionality of the [Be 3 (OH) 3 (C 3 H 2 O 4 ) 3 ] 3− SBUs, compared to the planar [B 3 O 6 ] FBUs, leads to a reduction in optical anisotropy. Consequently, LBOC demonstrates a moderate birefringence of 0.067@589.3 nm, lower than that of β ‐BBO (0.118@589.3 nm). Notably, bulk crystals of LBOC can be easily grown using a straightforward solution evaporation method, making it a promising candidate for UV NLO applications. This strategic design of the SBU opens new avenues for the rational development of NLO crystals with tailored properties.

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