title: A Bio-inspired Approach for Chromophore Communication: Ligand-to-Ligand and Host-to-Guest Energy Transfer in Hybrid Crystalline Scaffolds.
abstract: Efficient multiple-chromophore coupling in a crystalline metal-organic scaffold was achieved by mimicking a protein system possessing 100% energy-transfer (ET) efficiency between a green fluorescent protein variant and cytochrome b562. The two approaches developed for ET relied on the construction of coordination assemblies and host-guest coupling. Based on time-resolved photoluminescence measurements in combination with calculations of the spectral overlap function and Förster radius, we demonstrated that both approaches resulted in a very high ET efficiency. In particular, the observed ligand-to-ligand ET efficiency value was the highest reported so far for two distinct ligands in a metal-organic framework. These studies provide important insights for the rational design of crystalline hybrid scaffolds consisting of a large ensemble of chromophore molecules with the capability of directional ET.
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA).
authors.forename: Ekaterina A
authors.initials: EA
authors.lastname: Dolgopolova
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA).
authors.forename: Derek E
authors.initials: DE
authors.lastname: Williams
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA).
authors.forename: Andrew B
authors.initials: AB
authors.lastname: Greytak
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA).
authors.forename: Allison M
authors.initials: AM
authors.lastname: Rice
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA).
authors.forename: Mark D
authors.initials: MD
authors.lastname: Smith
authors.affiliation: Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221 (USA).
authors.forename: Jeanette A
authors.initials: JA
authors.lastname: Krause
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter street, Columbia, SC 29208 (USA). shustova@sc.edu.
authors.forename: Natalia B
authors.initials: NB
authors.lastname: Shustova
mesh_terms: D003580:Cytochromes / Q000737:chemistry*; D004735:Energy Transfer; D049452:Green Fluorescent Proteins / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D055668:Photochemical Processes
chemical_list: D003580:Cytochromes; D008024:Ligands; D009942:Organometallic Compounds; D049452:Green Fluorescent Proteins
keywords: coordination polymers; energy transfer; fluorescence; green fluorescent protein; metal-organic frameworks