Synthesis, characterization, and fluorescence phenomena of 1‐naphthoxy and 1‐naphthylamino substituted cyclotriphosphazenes

Abstract

The reactions of hexachlorocyclotriphosphazene N 3 P 3 Cl 6 (1) with 1-naphthol and 1-naphthylamine have been examined. The reaction of 1 with sodium 1-naphthoxy gave the hexakis(1-naphthoxy)cyclotriphosphazene (2) in high yield. Geminal 2,2-di(1-naphthylamino)-4,4,6,6tetrachlorocyclotriphosphazene (3) was obtained from the reaction of 1 with 1-naphthylamine. The structures of phosphazene derivatives were defined by elemental analysis, FTIR, UV-visible, and 1 H, 13 C, 31 P NMR spectroscopy. The fluorescence intensity of the compounds was measured in THF and CH 2

Multifunctional Cyclotriphosphazene/Hexagonal Boron Nitride Hybrids and Their Flame Retarding Bismaleimide Resins with High Thermal Conductivity and Thermal Stability

“…CPBN is a hybridized hBN, the most obvious difference between CPBN and hBN is their colors as shown in Figure 2A. Besides, hBN and HBN do not show any fluorescence effect, but CPBN exhibits a blue light fluorescence effect (Figure 2B) because of the electron transfer between the phenyl and amine groups of PDA, 26,27 and the chromaticity coordinates are x = 0.2059, y = 0.1911. These phenomena primarily suggest the success of synthesizing CPBN.…”

Investigation of nucleophilic substitution pathway for the reactions of 1,4-benzodioxan-6-amine with chlorocyclophosphazenes

“…Although the reactions of hexachlorocyclotriphosphazatriene (N 3 P 3 Cl 6 , trimer) with primary aliphatic [15,16] and aromatic [8b, [17][18][19] amines have been studied in great detail [20][21][22][23], there are limited studies about the reactions of octachlorocyclotetraphosphazatetraene (N 4 P 4 Cl 8 , tetramer), with a number of especially primary aromatic amines in the literature [13b, 22,[24][25][26][27]. Because, the reactions of tetramer with amines proceed much faster than that of N 3 P 3 C1 6 [22] due to the skeletal flexibility of the eight-membered ring [22,24] and wealth of product is very high.…”