Old tree blossoms anew: Research progress on the structures and optical properties of ultraviolet selenites

Li, Peng-Fei; Hu, Chun-Li; Mao, Jiang-Gao; Kong, Fang

doi:10.1016/j.ccr.2024.216000

Coordination Chemistry Reviews

2024

DOI: 10.1016/j.ccr.2024.216000

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Old tree blossoms anew: Research progress on the structures and optical properties of ultraviolet selenites

Peng-Fei Li,

Chun-Li Hu,

Jiang-Gao Mao

et al.

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Cited by 11 publications

(1 citation statement)

References 139 publications

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“…As an important branch of nonlinear optical crystals, frequency-doubled crystal materials have been widely studied in the past decades. Researchers have found many excellent NLO crystal materials, such as AgGaS 2 (AGS), ZnGeP 2 (ZGP), LiB 3 O 5 (LBO), KH 2 PO 4 (KDP), KTiOPO 4 (KTP), KBe 2 BO 3 F 2 (KBBF), and β-BaB 2 O 4 (β-BBO). − After decades of research, it is still a hot research direction to explore new crystalline materials with excellent NLO properties and analyze their structure–activity relationships. − …”

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confidence: 99%

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

Tang,

Ma,

et al. 2024

Inorg. Chem.

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Nonlinear optical (NLO) crystals are widely used in various fields. The introduction of lone-pair cations is regarded as an effective strategy to explore NLO crystals. In this work, two novel lead phosphite halides, centrosymmetric Pb 6 (HPO 3 )(H 2 PO 3 )Cl 9 and noncentrosymmetric Pb 6 (HPO 3 ) 2 Br 8 (H 2 O)•H 2 O, were obtained via a hydrothermal method. Pb 6 (HPO 3 )(H 2 PO 3 )Cl 9 is the first reported lone-pair metal phosphite with two kinds of phosphite groups (HPO 3 2− and H 2 PO 3 − ) and Pb 6 (HPO 3 ) 2 Br 8 (H 2 O)•H 2 O is the first inorganic NLO phosphite halide with a phase-matchable SHG effect of 1.02 × KDP. In addition, the Pb-centered polyhedral units of PbOCl

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mentioning

confidence: 99%

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

Tang,

Ma,

et al. 2024

Inorg. Chem.

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Achieving the Birefringence Optimization by Methyl Modulation in Organic Nonlinear Optical Crystals

Yang,

Sha,

Wang

et al. 2024

Advanced Optical Materials

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Non‐centrosymmetric organics are promising nonlinear optical (NLO) candidates, which always exhibit a short UV absorption cutoff edge, and a strong second harmonic generation (SHG) response, but an overlarge birefringence. Here, in order to optimize the birefringence, the methyl modulation of π‐conjugated organic planar units is proposed and implemented with the urea structure as a template. Thus, N‐methylurea and N,N'‐dimethylurea crystals are obtained by partially replacing hydrogen atoms with methyl groups. This replacement reduces hydrogen donors and weakens interchain hydrogen bonds, which facilitates the decreasing density and the parallel arrangement of π‐conjugated planar units. Hence, both N‐methylurea and N,N'‐dimethylurea crystals exhibit not only an optimized birefringence (N‐methylurea ≈0.099 and N,N'‐dimethylurea ≈0.072 at 546 nm) but also an enhanced SHG response (N‐methylurea ≈1.2 × β‐BaB2O4 and N,N'‐dimethylurea ≈1.9 × β‐BaB2O4), while maintaining a short UV absorption cutoff edge. Therefore, this work provides a novel strategy for the structural design and performance modulation of organic NLO crystals.

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The Directional Design of the Quasi‐Phase‐Matching Short‐Wave Ultraviolet Nonlinear Optical Crystal

Sha,

Yang,

Shang

et al. 2024

Laser & Photonics Reviews

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Since the study of short‐wave ultraviolet nonlinear optical crystals based on the quasi‐phase‐matching principle will effectively expand the development field of nonlinear optical materials, it is urgent to achieve their directional design. Here, it is proposed and implemented on account of the hexagonal wurtzite structure. Thus, the LiRbSeO4 crystal is obtained with [SeO4] groups as the main tetrahedra and [LiO4] as the separation. It exhibits a wide transparency window (0.22–5.57 µm) and an excellent nonlinear optical effect (≈1.7 × KH2PO4), which originates from the synergy of distorted tetrahedral groups and their uniform arrangement. More importantly, the LiRbSeO4 crystal is confirmed to be a ferroelectric with a typical polarization‐electric field hysteresis loop (a coercive field of 27.71 kV cm−1, a remanent polarization of 8.60 µC cm−2 at 373 K). Its ferroelectricity is further identified by the domain engineering studies, involving piezoelectricity and the chirality. Besides, ferroelectricity is attributed to the ordered arrangement of tetrahedra with the polarization reversal involving atomic displacements. Therefore, the LiRbSeO4 crystal is a promising short‐wave ultraviolet nonlinear optical candidate based on the quasi‐phase‐matching principle. This work also provides a new horizon for the design of nonlinear optical crystals.

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Old tree blossoms anew: Research progress on the structures and optical properties of ultraviolet selenites

Cited by 11 publications

References 139 publications

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

Achieving the Birefringence Optimization by Methyl Modulation in Organic Nonlinear Optical Crystals

The Directional Design of the Quasi‐Phase‐Matching Short‐Wave Ultraviolet Nonlinear Optical Crystal

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Old tree blossoms anew: Research progress on the structures and optical properties of ultraviolet selenites

Cited by 11 publications

References 139 publications

From Pb6(HPO3)(H2PO3)Cl9 to Pb6(HPO3)2Br8(H2O)·H2O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

From Pb6(HPO3)(H2PO3)Cl9 to Pb6(HPO3)2Br8(H2O)·H2O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

Achieving the Birefringence Optimization by Methyl Modulation in Organic Nonlinear Optical Crystals

The Directional Design of the Quasi‐Phase‐Matching Short‐Wave Ultraviolet Nonlinear Optical Crystal

Contact Info

Product

Resources

About

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units

From Pb₆(HPO₃)(H₂PO₃)Cl₉ to Pb₆(HPO₃)₂Br₈(H₂O)·H₂O: Halogen Regulation to Achieve Inorganic Metal Phosphite Halide Nonlinear Optical Material with Unprecedented Pb-Centered Polyhedral Units