Phosphorescence enhancement triggered by II stacking in solid-state [Cu(N-N)(P-P)]BF4 complexes

Document Type

Article

Publication Date

2-17-2009

Abstract

In this article, we report a phosphorescence enhancement phenomenon of [Cu(N-N)(P-P)]BF4 complexes in the solid state. The phosphorescence enhancement phenomenon is composed of three features: (1) an obvious emission blue shift, (2) a greatly enhanced photoluminescence quantum yield, and (3) a longer excited-state lifetime. Systematic analyses prove that the main cause of this phenomenon is nonradiative process suppression triggered by the π stacking between [Cu(N-N)(P-P)]BF4 molecules. The phorsphorescence enhancement widely existsin[Cu(N-N)(P-P)]BF4 complexes because of the π surfaces in their diimine ligands. © Copyright 2009 American Chemical Society.

Publication Source (Journal or Book title)

Langmuir

First Page

2068

Last Page

2074

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