Switching on emission in Zn(ii) coordination complexes by tempering Namido character†
Amy L.
Knodel, 
a
Issiah B.
Lozada,
a
Robert J.
Ortiz,
a
J. A. Gareth
Williams
*b
and
David E.
Herbert
*a
a
Issiah B.
Lozada,
a
Robert J.
Ortiz,
a
J. A. Gareth
Williams
*b
and
David E.
Herbert
*a
Abstract
A series of four-coordinate zinc(II) complexes is presented in which the amido vs. imino character of a ligated nitrogen donor correlates to the luminescence intensity. DFT analysis points to a distinct mechanism for this trend wherein emission can be switched on by restricting non-radiative decay pathways through the resonance-induced delocalization of amido ligand lone-pairs.
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