Silver-induced reconstruction of an adeninate-based metal-organic framework for encapsulation of luminescent adenine-stabilized silver clusters

Journal of Materials Chemistry. C, Materials for Optical and Electronic Devices
Dries JonckheereDirk E De Vos

Abstract

Bright luminescent silver-adenine species were successfully stabilized in the pores of the MOF-69A (zinc biphenyldicarboxylate) metal-organic framework, starting from the intrinsically blue luminescent bio-MOF-1 (zinc adeninate 4,4'-biphenyldicarboxylate). Bio-MOF-1 is transformed to the MOF-69A framework by selectively leaching structural adenine linkers from the original framework using silver nitrate solutions in aqueous ethanol. Simultaneously, bright blue-green luminescent silver-adenine clusters are formed inside the pores of the recrystallized MOF-69A matrix in high local concentrations. The structural transition and concurrent changes in optical properties were characterized using a range of structural, physicochemical and spectroscopic techniques (steady-state and time-resolved luminescence, quantum yield determination, fluorescence microscopy). The presented results open new avenues for exploring the use of MOFs containing luminescent silver clusters for solid-state lighting and sensor applications.

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Citations

Jun 6, 2017·Acta Crystallographica. Section C, Structural Chemistry·Wei Wei FuYang Tong
Apr 14, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·S RojasP Horcajada
Sep 2, 2017·Accounts of Chemical Research·Eduardo Coutiño-GonzalezJohan Hofkens

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Methods Mentioned

BETA
surface plasmon resonance
X-ray
thermal treatments
fluorescence microscopy

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