Surfactant-Thermal Synthesis of Amino Acid-Templated Zinc Phosphates with 3-Connected Nets Related to Zeolite ABW.

Two crystalline zinc phosphates, formulated as Zn(HPO4)(dl-C5H9NO2) (SCU-3) and Zn(HPO4)(C2H5NO2) (SCU-10), were prepared under surfactant-thermal conditions using amino acids as structure-directing agents. Different from traditional zeolites with 4-connected nets, the two compounds have different 3-connected nets related to zeolite ABW. Powder second-harmonic-generation (SHG) measurement shows that SCU-10 is a nonlinear optically active solid with an SHG efficiency about 1.4 times that of KH2PO4.