title: Probing molecular order in zeolite L inclusion compounds using two-photon fluorescence polarimetric microscopy.
abstract: We investigate the local static molecular orientational behavior in zeolite L inclusion compounds by polarimetric two-photon fluorescence microscopy. This technique, based on the polarized read-out of the signal under a tunable incident polarization state, provides refined information on molecular disorder that is not achievable using traditional fluorescence anisotropy. Moreover, the polarimetric microscopy imaging scheme permits a spatial investigation of possible heterogeneities, with a submicrometric resolution. The study performed on different fluorescent molecules inserted in zeolite L channels evidence a degree of disorder for either small or flexible structures.
authors.affiliation: Institut Fresnel, Aix-Marseille Université, CNRS, Domaine Universitaire St Jérôme, 13397 Marseille, France.
authors.forename: A
authors.initials: A
authors.lastname: Gasecka
authors.forename: L-Q
authors.initials: LQ
authors.lastname: Dieu
authors.forename: D
authors.initials: D
authors.lastname: Brühwiler
authors.forename: S
authors.initials: S
authors.lastname: Brasselet