Regulating KBBF-like structures via a charge-assisted hydrogen-bonded framework to enable easily grown ultraviolet nonlinear optical crystals

Key Points

• The aim is to regulate KBBF-like structures to develop UV-nonlinear optical crystals with improved properties.
• Utilized a 3D charge-assisted hydrogen-bonded framework
• Synthesize KBBF-type structures
• Evaluate optical properties including SHG response and birefringence
• Grow centimeter-scale crystals from room-temperature solution
• Obtained a new UV-NLO crystal, SAN, with a strong SHG response
• Demonstrated large birefringence in the new crystal
• Achieved easy growth of centimeter-scale crystals from solution