Structures and Non-Linear Optical Properties of Lanthanide Complexes

Department of Chemistry, The University of Hong Kong
â—‹Wing-Tak Wong

Multi-photon excitation allows molecules that typically absorb in the ultraviolet region to be excited with red or near-infrared light. The photoluminescence processes from organic-lanthanide complexes are usually induced by an organic chromophore ligand that absorbs incoming light and transfers the excitation energy to the lanthanide ion. Until now, only a few multi-photon processes in organic lanthanide complexes have been observed owing to the limitations of experimental measurements. Although there have been reports on lanthanide complexes containing second harmonic generation; these have been limited and focused just on glassy doped lanthanide materials. We have developed some amide based polymeric lanthanide materials that displayed efficient photo upconversion and/or non-linear optical properties (SHG, THG). Their syntheses, structures and luminescent properties will be discussed.

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