Synthesis, thermal and photophysical properties of naphthoxycyclotriphosphazenyl-substituted dendrimeric cyclic phosphazenes

The synthesis and properties of naphthoxycyclotriphosphazenyl-substituted dendrimeric cyclic phosphazenes are reported. Compound 3, [N3P3(ONp)5OPhOH], is prepared by the sequential reactions of hexachlorocyclotriphosphazene with 2-naphthol and 4-benzyloxyphenol derivatives, as side groups. The dendrimeric compounds 5, 6 and 7 have been obtained by the reactions of compound 3 with hexachlorocyclotriphosphazene, N3P3Cl6, octachlorocyclotetraphosphazene, N4P4Cl8, and bisphenol bridged cyclophosphazene, N6P6Cl10 (4), respectively. The newly synthesized compounds have been fully characterized by elemental analysis, ESI, MALDI-TOF mass spectrometry, FT-IR, 1H, 13C and 31P NMR spectroscopy. The thermal stability and fluorescence spectral properties of all these novel compounds are investigated.

Graphical abstractIn this work is shown that synthesis and characterisation of naphthoxycyclotriphosphazenyl-substituted dendrimeric cyclic phosphazenes. The thermal stability and fluorescence spectral properties of all these novel compounds are investigated.Figure optionsDownload full-size imageDownload as PowerPoint slide