双光子激发诱导的生物应用中铕的显著红光发射。
Impressive europium red emission induced by two-photon excitation for biological applications.
机构信息
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hum, Hong Kong SAR.
出版信息
Inorg Chem. 2011 Jun 20;50(12):5309-11. doi: 10.1021/ic102465j. Epub 2011 May 16.
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.
三种基于三嗪的铕(III)配合物被合成出来，它们表现出很强的双光子诱导铕发射，具有很高的双光子吸收截面。与配合物 1（σ(2): 128 GM）相比，配合物 3 的改性三嗪配体在 DMSO 溶液中使双光子吸收截面（σ(2): 320 GM）提高了 100%以上。铕配合物 3 在体外也很稳定，并且在体外获得了功率依赖性曲线，以确认 HeLa 细胞中的双光子诱导 f-f 发射。
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