Impressive Europium Red Emission Induced by Two-Photon Excitation for Biological Applications
Inorganic Chemistry2011Vol. 50(12), pp. 5309–5311
Citations Over TimeTop 10% of 2011 papers
Wai‐Sum Lo, Wai‐Ming Kwok, Ga‐Lai Law, Chi‐Tung Yeung, Chris Tsz‐Leung Chan, Ho-Lun Yeung, Hoi‐Kuan Kong, Zhihang Chen, Margaret B. Murphy, Ka‐Leung Wong, Wing‐Tak Wong
Abstract
Three triazine-based europium(III) complexes were synthesized that demonstrated strong two-photon induced europium emission with a high two-photon absorption cross-section. The modified triazine ligand of complex 3 initiated over 100% enhancement of the two-photon absorption cross-section (σ(2): 320 GM) when compared with complex 1 (σ(2): 128 GM) in a solution of DMSO. Europium complex 3 is also stable in vitro, and power-dependence curves were obtained in vitro to confirm the two-photon-induced f-f emission in HeLa cells.
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