Abstract
Near Infrared (NIR) luminescence is advantageous for many applications ranging from lasers, telecommunication to biological imaging. Here we present a series of rigid and permanent porous lanthanide-encapsulated metal organic frameworks (Ln3+@MOFs, @ refers to “Ln3+ doped or immobilized into MOFs host”) by post synthetic modification method. We develop a novel sensitizer for NIR emitting lanthanide ions through the interaction of a transition metal cation (Ag+), resulting in their characteristic emissions at 980, 1064 and 1538 nm, respectively in the presence of Ag+. Moreover, the Ag+/(Er3+/Yb3+) co-doped MOFs hybrids can create luminescent barcoded system with well-controlled compositions and photophysical properties. It's a feasible strategy to acquire NIR emission of Ln3+@MOFs.
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