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Updated: Sep 4, 2025
09:09
Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
Published on: December 15, 2015
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Two layered galloborates from centric to acentric structures: syntheses and NLO properties
Chong-An Chen1, Wen-Fang Liu1, Guo-Yu Yang1
1MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China. ygy@bit.edu.cn.
Chemical Communications (Cambridge, England)
|July 14, 2022
Summary
Researchers synthesized novel layered galloborates (GBOs). One GBO exhibits a record high second-harmonic generation (SHG) response, surpassing KDP and other main group metal borates (MBOs).
Area of Science:
- Inorganic Chemistry
- Materials Science
Background:
- Layered borates are crucial for nonlinear optical (NLO) applications.
- Developing novel borates with enhanced NLO properties remains a key research area.
Purpose of the Study:
- To synthesize novel layered galloborates (GBOs).
- To investigate the structural characteristics and second-harmonic generation (SHG) properties of these new GBOs.
Main Methods:
- Solvothermal synthesis was employed to create the GBOs.
- Structural analysis was performed on the synthesized compounds.
- Second-harmonic generation (SHG) measurements were conducted to evaluate NLO properties.
Main Results:
- Two new layered galloborates, Na3GaB4O9 (1) and Na5Ga[B7O12(OH)]2·2B(OH)3 (2), were successfully synthesized.
- Compound 1 features an unprecedented layered structure with GaO4 tetrahedra and B4O9 clusters.
- Compound 2, synthesized under modified conditions, exhibits a 2D acentric layer and a high SHG response (4.6 times that of KDP).
Conclusions:
- The study presents two novel layered galloborates with unique structural motifs.
- Compound 2 demonstrates exceptional nonlinear optical properties, making it a promising material for NLO applications.
- This research expands the family of main group metal borates (MBOs) with significant potential for optical technologies.
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