Dinuclear neodymium(III) complex of cationic {12[ane]HN4(CH2CCH)4}+ with sensitized near-infrared luminescence by ion-association sensitizer
摘要:
A new complex Nd-2(hfac)(6)(CH3COO)(2) {12[ane]HN4(CH2C CH)(4)}(2) (hexafluoroacetylacetonate, hfac) was synthesized and characterized. Upon excitation of the organic cation {12[ane]N4H(CH2C CH)(4)}(+) (protonation on one of the nitrogen atoms of N,N',N',N'''-tetra-(3 -prop-l-yne)- 1,4,7,10-tetrazacycl ododecane), the neodymium NIR luminescence is sensitized through Forster energy transfer mechanism. (c) 2007 Elsevier B.V. All rights reserved.
Provided are macrocyclic compounds having a macrocyclic core which has at least one macrocyclic donor and at least one pendant group which has at least one donor group. The macrocyclic compounds can be complexed to Fe(II) and Ni(II). The macrocyclic compounds can be used in imaging methods. For example, the compounds can be used MRI paraCEST contrast agents.