Abstract

Pyrolysis in air at 800°C of [{NP(OC 12H 10)} 0.6{NP(OC 6H 4PPh 2·(π- CH 3C 5H 4)-Mn(CO) 2) 2} 0.4] n (1) in the solid state affords product 2 containing nanoclusters of Mn 2P 2O 7 with sizes ranging from 50 to 90 nm and averaging about 74 nm. The egg-shape of the unpyrolyzed organometallic polymer is retained but with increased particle size after pyrolysis. The pyrolytic material shows near-infrared photoluminescence attributed to the emission of tetrahedral Mn 2+ embedded in a matrix of Mn 2P 2O 7. The solid-state pyrolysis of organometallic derivatives of polyphosphazenes may be a useful and general route to nano-structured Mn 2P 2O 7. © 2006 Springer Science+Business Media, Inc.