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Bimetallic Lanthanide Complexes Derived from Macrocycle‐Appended m ‐Xylyl Derivatives: Synthesis and Spectroscopic Properties
Author(s) -
Placidi Matteo P.,
Natrajan Louise S.,
Sykes Daniel,
Kenwright Alan M.,
Faulkner Stephen
Publication year - 2009
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200900141
Subject(s) - bimetallic strip , lanthanide , chemistry , luminescence , metal , stereochemistry , group (periodic table) , combinatorial chemistry , polymer chemistry , crystallography , medicinal chemistry , organic chemistry , ion , optoelectronics , physics
A series of bimetallic lanthanide complexes was prepared from a bimacrocyclic system in which two DO3A units are linked by a m ‐xylyl unit appended with either a NO 2 or an NH 2 group (DO3A=1,4,7,10‐tetraazacyclododecane‐1,4,7‐triacetic acid). The Nd‐, Eu‐, Tb‐ and Yb‐complexes were all luminescent: time‐resolved studies indicated that the lipophilic xylyl group restricts close approach of H 2 O to the metal centre.