A spherical deca-vanadophosphate covalent assembled all-inorganic open framework.

Area of Science:

• Materials Science
• Inorganic Chemistry
• Solid-State Chemistry

Background:

• Vanadophosphate (VPO) materials are known for their diverse structural motifs and potential applications.
• The synthesis of novel open framework structures with unique building units remains a key challenge in materials chemistry.
• Understanding the electronic properties of new inorganic compounds is crucial for developing advanced functional materials.

Purpose of the Study:

• To synthesize and characterize a new all-inorganic open framework compound.
• To investigate the structural features of the vanadophosphate unit within the framework.
• To determine the semiconductor properties of the newly prepared material.

Main Methods:

• Hydrothermal reduction-condensation method for material synthesis.
• Single-crystal X-ray diffraction for structural determination.
• Semiconductor property analysis.

Main Results:

• Successful preparation of an all-inorganic open framework, [NH4]9[P4V10O34]1.5·3H2O (1), through covalent phosphate group linkage.
• The framework incorporates a rare spherical {V10-type} vanadophosphate unit ([P4V10O34]6-).
• Compound 1 was identified as an n-type semiconductor.

Conclusions:

• A novel vanadophosphate open framework with a unique spherical V10-type structure has been synthesized.
• The material exhibits n-type semiconductor behavior.
• This discovery expands the library of VPO materials and suggests potential for electronic applications.