Second harmonic generation microscopy reveals hidden polar organization in fluoride doped MIL-53(Fe)

Polar metal–organic frameworks have potential applications as functional non-linear optical, piezoelectric, pyroelectric and ferroelectric materials. Using second harmonic generation microscopy we found that fluoride doping of the microporous iron(III) terephthalate MOF MIL-53(Fe) induces a polar organization in its structure, which was not...

Dielectric water sorption analysis

Amorphous-amorphous transition in glassy polymers subjected to cold rolling studied by means of positron annihilation lifetime spectroscopy

In this study, polycarbonate (PC) and polystyrene (PS) are subjected to plastic deformation by means of cold rolling and the resulting variation of the free volume and its subsequent time evolution after rolling is investigated by means of positron annihilation lifetime spectroscopy (PALS). The value of the long lifetime component that is...

Kinetics of Phase Transitions and Dielectric Relaxations in Poly-bis(trifluorethoxy-phosphazene) (PBFP)

Relaxation of Free Volume in polycarbonate and Polystyrene Studied by Positron Annihilation Lifetime pectroscopy

Dynamics of polycarbonate far below the glass transition A positron annihilation lifetime study

Physical aging of polycarbonate far below the glass transition temperature: Evidence for the diffusion mechanism