Department of Material Sciences, Lomonosov Moscow State University, Moscow, Russian Federation.
Dalton Trans. 2021 Mar 21;50(11):3786-3791. doi: 10.1039/d0dt03913f. Epub 2021 Mar 11.
Solution behaviour in DMSO using 1D and 2D NMR spectroscopy was performed for lanthanide complexes Ln(L)(HL) and Ln(HL)Cl, containing non-macrocyclic 2-(tosylamino)-benzylidene-N-benzoylhydrazone (HL), and the structure of [Yb(L)] cation in solution was determined. Based on the NMR data, the possibility to obtain novel complexes containing [Ln(L)] was predicted, which was successfully synthesized, and the crystal structure of K(CHOH)[Yb(L)] was determined. Thanks to its high quantum yield of NIR luminescence (1.3 ± 0.2%), high absorption, low toxicity, and the stability of its anion against dissociation in DMSO, K(HO)[Yb(L)] was successfully used for bioimaging.
采用一维和二维 NMR 光谱法研究了含非大环 2-（对甲苯磺酰氨基）苯亚甲基-N-苯甲酰腙（HL）的镧系配合物 Ln(L)(HL)和 Ln(HL)Cl 在 DMSO 中的溶液行为，并确定了[Yb(L)]阳离子在溶液中的结构。基于 NMR 数据，预测了有可能获得含有[Ln(L)]的新型配合物，这些配合物已成功合成，并确定了 K(CHOH)[Yb(L)]的晶体结构。由于其近红外发光量子产率高（1.3±0.2%）、吸收能力强、毒性低以及阴离子在 DMSO 中稳定，不易发生解离，K(HO)[Yb(L)] 成功用于生物成像。
