ArticleMolecules (Basel, Switzerland)2023
Enhanced Solid-State Fluorescence of Flavin Derivatives by Incorporation in the Metal-Organic Frameworks MIL-53(Al) and MOF-5.
Article in Molecules (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 12 citations in OpenAlex.
- Enhanced Energy Transfer from a Metal-Organic Framework to a Highly Confined Organic Phosphorescent Dye.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Encapsulation of a Highly Acid-Stable Dicyano-Bodipy in Zr-Based Metal-Organic Frameworks with Increased Fluorescence Lifetime and Quantum Yield Within the Solid Solution Concept.Molecules (Basel, Switzerland) · 2025Article
- Confinement-Driven Aggregate Formation of Photoacids within Porous Metal-Organic Frameworks.ACS omega · 2025Article
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Authors and funding
12 authors at 2 institutions in 1 country.
Funding
Abstract
The flavin derivatives 10-methyl-isoalloxazine (MIA) and 6-fluoro-10-methyl-isoalloxazine (6F-MIA) were incorporated in two alternative metal-organic frameworks, (MOFs) MIL-53(Al) and MOF-5. We used a post-synthetic, diffusion-based incorporation into microcrystalline MIL-53 powders with one-dimensional (1D) pores and an in-situ approach during the synthesis of MOF-5 with its 3D channel network. The maximum amount of flavin dye incorporation is 3.9 wt% for MIA@MIL-53(Al) and 1.5 wt% for 6F-MIA@MIL-53(Al), 0.85 wt% for MIA@MOF-5 and 5.2 wt% for 6F-MIA@MOF-5. For the high incorporation yields the probability to have more than one dye molecule in a pore volume is significant. As compared to the flavins in solution, the fluorescence spectrum of these flavin@MOF composites is broadened at the bathocromic side especially for MIA. Time-resolved spectroscopy showed that multi-exponential fluorescence lifetimes were needed to describe the decays. The fluorescence-weighted lifetime of flavin@MOF of 4 ± 1 ns also corresponds to those in solution but is significantly prolonged compared to the solid flavin dyes with less than 1 ns, thereby confirming the concept of "solid solutions" for dye@MOF composites. The fluorescence quantum yield (
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