A Layered Aluminophosphate [C 17 H 21 N 2 ] 3 [Al 3 (PO 4 ) 4 ]·5H 2 O with Fluorescent Property Derived from Carbazolyl-Modified Template.

Designing and innovating organic structure-directing agents is the key to synthesizing novel molecular sieve structures. Herein, we design a novel carbazolyl-modified template and further synthesize a two-dimensional layered aluminophosphate with [C 17 H 21 N 2 ] 3 [Al 3 (PO 4 ) 4 ]·5H 2 O (denoted as ZHKU-2). ZHKU-2 is composed of AA-stacked [Al 3 P 4 O16] 3- layers constructed from alternating AlO 4 and PO 3 (=O) tetrahedrons to form a 4.6.8 network featured by capped six-ring secondary building units. Carbazolyl-templated ZHKU-2 exhibits strong purple fluorescence with a high quantum yield of 25.98%. This work expands aluminophosphate materials of the [Al 3 P 4 O 16 ] 3- family and provides a view for synthesizing new molecular sieves by exploring the organic luminescence structure-directing agents.