Positronium Lifetime Study on Subnanoscopic Structure of Polyrotaxane
The subnanoscopic structures of polyrotaxanes, prepared from α-cyclodextrins, poly(ethylene glycol), and bulky adamantane end groups, were examined by means of the positron annihilation lifetime technique, in consideration of the free-volume hole, quantified from the long-lived ortho-positronium (o-Ps) lifetimes. The influence of the chemical structure on the temperature dependence of the o-Ps lifetimes are discussed.
Jozef Krištiak, Jan Kuriplach and Pradeep K. Pujari
K. Ito et al., "Positronium Lifetime Study on Subnanoscopic Structure of Polyrotaxane", Materials Science Forum, Vol. 733, pp. 167-170, 2013