Synthesis and Characterization of Poly[bis(resorcinol monobenzoate) phosphazenes] and Poly[bis(resorcinol monobenzoate diethylamino) phosphazenes] and Their Self Assembly Behaviors
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Poly[bis(resorcinol monobenzoate)phosphazenes] (PRMBP) and poly[bis(resorcinol monoben- zoate diethylamino)phosphazenes] (PRMBDEAP) were synthesized in two steps. In the first step, polydichlorophosphazenes (PDCP) were synthesized from hexachlorocyclotriphosphazenes (HCCP) via ring opening polymerization in the presence of AlCl3 as a catalyst. In the second step, the chlorine atoms in PDCP were replaced with resorcinol monobenzoate and (or) diethylamine in a macromolecular substitution reaction. The structures of the polymers were elucidated by 1H NMR, 31P NMR, and GPC. In addition, the self assembly behaviors of PRMBP and PRMBDEAP were investigated in different solvent using optical microscopy and SEM techniques. The SEM images showed that PRMBDEAP self assembled into star-like dendrimers comprising of open ended tubular arms.
KeywordsPolyphosphazenes Synthesis Characterization Self Assembly
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