New Lanthanide Complexes for Sensitized Visible and Near-IR Light Emission: Synthesis, <sup>1</sup>H NMR, and X-ray Structural Investigation and Photophysical Properties
作者:Silvio Quici、Giovanni Marzanni、Alessandra Forni、Gianluca Accorsi、Francesco Barigelletti
DOI:10.1021/ic035143b
日期:2004.2.1
describe the syntheses, the 1H NMR studies in CD3OD and D2O as solvent, the X-ray characterization, and the luminescence properties in D2O solution of the two complexes Eu.1 and Er.1, where 1 is a dipartite ligand that includes (i) a 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) unit serving as hosting site for the metal center; and (ii) a phenanthroline unit which plays the role of light
我们描述了两种配合物Eu.1和Er.1的合成,在CD3OD和D2O中作为溶剂的1H NMR研究,X射线表征以及在D2O溶液中的发光性质,其中1是包括( i)1,4,7,10-四氮杂环十二烷-1,4,7-三乙酸(DO3A)单元用作金属中心的存放位;(ii)菲咯啉单元,其在金属中心发光的敏化过程中起着光天线的作用。在以前的报告中(Inorg。Chem。2002,41,2777),我们已经表明,对于Eu.1,在第一个配位域内没有水分子。此处报道的X射线和1H NMR结果与Eu.1和Er.1配合物中的9个配位点完全饱和一致。此外,这些研究还提供了有关构象的重要细节,这些复合物在解决方案中采用了方形反棱镜(SAP)和扭曲方形反棱镜(TSAP)。发光结果与吸光菲咯啉单元(lambda(exc)= 278 nm)处的有效系统间穿越(ISC)和从菲咯啉供体到阳离子受体(单位为或两个步骤都接近单位效率)。在D2O溶剂中,对于Eu