pH-Responsive Luminescent Lanthanide-Functionalized Gold Nanoparticles with "On-Off" Ytterbium Switchable Near-Infrared Emission |
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| Authors: | Laura K Truman Steve Comby Thorfinnur Gunnlaugsson |
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| Affiliation: | School of Chemistry, Centre for Synthesis and Chemical Biology and Trinity Biomedical Sciences Institute, Trinity College Dublin, College Green, Dublin 2 (Ireland). |
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| Abstract: | A pH indicator: Near-infrared emitting lanthanide-functionalized gold nanoparticles have been prepared through self-assembly at the gold surface between a ytterbium(III)-cyclen complex and xylenol orange. Excitation of the xylenol orange unit with visible light, up to 600?nm, results in the sensitization of the Yb(III) -centered near-infrared emission that can be reversibly switched "on-off" as a function of the pH value. |
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| Keywords: | gold lanthanides luminescence nanoparticles self‐assembly |
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