Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.
Dalton Trans. 2019 Apr 2;48(14):4471-4473. doi: 10.1039/c9dt00411d.
The hypersensitive 2F5/2 to 2F7/2 transition of Yb3+ can be used to monitor perturbations of the coordination sphere in ytterbium(iii) complexes. An envelope of Stark components gives rise to a relatively broad and asymmetric emission band, whilst changes in their relative intensity and energy enable a ratiometric response. We report a new ytterbium complex with a sulphonamide arm that binds reversibly to Yb3+ as a function of pH, giving rise to significant pH dependent changes in the Yb emission spectrum.
Yb3+ 的高灵敏 2F5/2 到 2F7/2 跃迁可用于监测镱(iii)配合物中配位球的扰动。斯塔克分量的包络导致发射带相对较宽且不对称，而它们的相对强度和能量的变化则使比率响应成为可能。我们报告了一种新的带有磺酰胺臂的镱配合物，它可以随 pH 值可逆地与 Yb3+ 结合，导致 Yb 发射光谱随 pH 值显著变化。
