ArticleProceedings of the National Academy of Sciences of the United States of America2019
Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Precise Temperature-Gradient Regulated Structure-Activity Relationship of PCN-224 as Bifunctional Nanocarriers.Precision chemistry · 2026Article
- Silver nanoparticle enhanced metal-organic matrix with interface-engineering for efficient photocatalytic hydrogen evolution.Nature communications · 2023Article
- Edge states in plasmonic meta-arrays.Nanophotonics (Berlin, Germany) · 2022Article
- Creating a regular array of metal-complexing molecules on an insulator surface at room temperature.Nature communications · 2020Article
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8 authors.
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Abstract
This paper describes how metal-organic frameworks (MOFs) conformally coated on plasmonic nanoparticle arrays can support exciton-plasmon modes with features resembling strong coupling but that are better understood by a weak coupling model. Thin films of Zn-porphyrin MOFs were assembled by dip coating on arrays of silver nanoparticles (NP@MOF) that sustain surface lattice resonances (SLRs). Coupling of excitons with these lattice plasmons led to an SLR-like mixed mode in both transmission and transient absorption spectra. The spectral position of the mixed mode could be tailored by detuning the SLR in different refractive index environments and by changing the periodicity of the nanoparticle array. Photoluminescence showed mode splitting that can be interpreted as modulation of the exciton line shape by the Fano profile of the surface lattice mode, without requiring Rabi splitting. Compared with pristine Zn-porphyrin, hybrid NP@MOF structures achieved a 16-fold enhancement in emission intensity. Our results establish MOFs as a crystalline molecular emitter material that can couple with plasmonic structures for energy exchange and transfer.
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