POLYPHOSPHAZENES WITH P(DIOXY-BIARYL) CYCLES IN THE REPEATING UNITS: A REVIEW
This review covers the chemistry of the polyphosphazene homo or random copolymers having repeating units of the type [NP(O2-biaryl)]n, were the P(dioxy-biaryl) moieties are cyclic (polyspirophosphazenes), specially those of the types [NP(O2C12H8)[n [(O2C12H8)=2,2´-dioxy-1,1´-biphenyl[, and the chiral [NP(O2C20H12)]n [(O2C20H12)= 2,2-dioxy-1,1´-binaphthyl[ or [NP(O2C20H10R2)]n [(O2C20H10R2)= 2,2´-dioxy-1,1´-binaphthyl functionalized in the 6,6´positions[. Special mention is made to the molecular and solid state structure, the behaviour in solution, the thermal properties, and, in the case of the chiral polymers, their chirooptical properties. The use of some of this polymers as precursors for different kind of materials, such as polymeric complexes with the transition metals and their use as supported catalysts, branched phosphazene polymers and metal containing nanoparticles is also discussed
Main Author: | CARRIEDO,GABINO A |
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Format: | Digital revista |
Language: | English |
Published: |
Sociedad Chilena de Química
2007
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Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072007000200016 |
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