Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9676022 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2005 | 5 Pages |
Abstract
The fluorescence properties of three novel compounds are investigated by one- and two-photon excitations. These novel compounds are formed by self-assembly of pyrrol-2-yl-methyleneamines with zinc (II), which show perfectly symmetries in molecular structures. Intensity dependent fluorescence properties of both one- and two-photon-induced fluorescence excited by an 800Â nm, 70Â fs laser beam are reported. The fluorescence spectra and the fluorescence lifetimes of these new compounds obtained by two-photon excitation are similar to those obtained by one-photon excitation, which indicate that the two-photon-induced photodynamic processes of these complexes are similar to one-photon-induced photodynamic processes. The two-photon excitation cross-sections of these new compounds are also measured at 800Â nm. The large two-photon excitation cross-sections of these three novel compounds indicate their potential properties for two-photon applications in nonlinear optics and biomolecular imaging fields.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Z. Yang, Z.K. Wu, J.S. Ma, A.D. Xia, Y.Q. Li,