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A Layered Aluminophosphate [C17H21N2]3[Al3(PO4)4]·5H2O with Fluorescent Property Derived from Carbazolyl-Modified
Jiang-Zhen Qiu1, Cheng-Jie Guo1, Qinwu Wu1
1College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China.
Inorganic Chemistry
|October 10, 2023
Summary
Researchers developed a novel carbazolyl-modified template to synthesize ZHKU-2, a new 2D layered aluminophosphate molecular sieve. This material exhibits strong purple fluorescence, expanding possibilities for novel sieve synthesis.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Crystallography
Background:
- The synthesis of novel molecular sieve structures relies heavily on the design of organic structure-directing agents.
- Aluminophosphate materials are a significant class of molecular sieves with diverse applications.
Purpose of the Study:
- To design and synthesize a novel organic structure-directing agent.
- To utilize this agent for the preparation of a new two-dimensional layered aluminophosphate.
- To characterize the structure and properties of the resulting material.
Main Methods:
- Design of a carbazolyl-modified organic template.
- Hydrothermal synthesis of the aluminophosphate material using the designed template.
- Single-crystal X-ray diffraction for structural determination.
- Powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), and fluorescence spectroscopy for characterization.
Main Results:
- Successful synthesis of a novel 2D layered aluminophosphate, denoted as ZHKU-2, with the formula [C17H21N2]3[Al3(PO4)4]·5H2O.
- ZHKU-2 features AA-stacked [Al3P4O16]3- layers built from alternating AlO4 and PO3(=O) tetrahedrons, forming a 4.6.8 network with capped six-ring secondary building units.
- The carbazolyl-templated ZHKU-2 exhibits strong purple fluorescence with a high quantum yield of 25.98%.
Conclusions:
- This study expands the family of [Al3P4O16]3- aluminophosphate materials.
- The use of organic luminescence structure-directing agents offers a promising strategy for synthesizing new molecular sieves.
- The developed carbazolyl-modified template facilitates the formation of novel aluminophosphate structures with interesting luminescent properties.
