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The aminolysis reactions of hexachlorocyclotriphosphazene, [N 3 P 3 Cl 6 ] ( 1a ) and dispiro-2,2′-biphenoxydichlorocyclotriphosphazene [N 3 P 3 Cl 2 [(2,2′-biphenoxy) 2 ] ( 1b ) with 6-aminoquinoline ( 2 ) were carried out to examine the spectroscopic properties of cyclotriphosphazene derivatives combined with 6-aminoquinoline. For the first time, two new aminoquinoline-substituted cyclotriphosphazene derivatives ( 3a ,  b ) were obtained in this study. Both compounds ( 3a ,  b ) have been characterized by elemental analysis, FT-IR analysis, MALDI-TOF mass spectrometry,  13 C,  1 H, and  31 P NMR spectroscopies. The molecular structure of  3b  has been confirmed by single crystal X-Ray crystallography. The crystal structure of  3b  was investigated in detail to determine the remarkable intermolecular interactions. Furthermore, the photophysical properties of compounds  3a  and  3b  were determined by using UV/vis and fluorescence spectroscopies.

Synthesis, characterization, and spectroscopic properties of the new type of aminoquinoline-modified cyclotriphosphazenes