Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, PR China.
J Am Chem Soc. 2011 Oct 5;133(39):15276-9. doi: 10.1021/ja205907y. Epub 2011 Sep 9.
Chromophoric iridium(III) complex-coated NaYF(4): 20%Yb, 1.6%Er, 0.4%Tm nanocrystals are demonstrated as a ratiometric upconversion luminescence (UCL) probe for highly selective detection of cyanide anion and bioimaging of CN(-) in living cells through inhibition of the energy transfer from the UCL of the nanocrystals to the absorbance of the chromophoric complex. The UCL probe provides a very low detection limit of 0.18 μM CN(-) in the aqueous solution.
具有发色团的铱(III)配合物包覆的 NaYF(4):20%Yb, 1.6%Er, 0.4%Tm 纳米晶被证明是一种比率上转换发光 (UCL) 探针，可通过抑制纳米晶 UCL 到发色团复合物吸收的能量转移，对氰根阴离子进行高选择性检测，并对活细胞中的 CN(-)进行生物成像。该 UCL 探针在水溶液中的检测限低至 0.18 μM CN(-)。
