Confinement-Driven Photophysics in Hydrazone-Based Hierarchical Materials.

Autor: Thaggard GC; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Leith GA; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Sosnin D; Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA., Martin CR; Savannah River National Laboratory, Aiken, SC 29808, USA., Park KC; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., McBride MK; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Lim J; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Yarbrough BJ; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Maldeni Kankanamalage BKP; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Wilson GR; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Hill AR; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Smith MD; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Garashchuk S; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Greytak AB; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA., Aprahamian I; Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA., Shustova NB; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2023 Jan 09; Vol. 62 (2), pp. e202211776. Date of Electronic Publication: 2022 Dec 02.
DOI: 10.1002/anie.202211776
Abstrakt: Confinement-imposed photophysics was probed for novel stimuli-responsive hydrazone-based compounds demonstrating a conceptual difference in their behavior within 2D versus 3D porous matrices for the first time. The challenges associated with photoswitch isomerization arising from host interactions with photochromic compounds in 2D scaffolds could be overcome in 3D materials. Solution-like photoisomerization rate constants were realized for sterically demanding hydrazone derivatives in the solid state through their coordinative immobilization in 3D scaffolds. According to steady-state and time-resolved photophysical measurements and theoretical modeling, this approach provides access to hydrazone-based materials with fast photoisomerization kinetics in the solid state. Fast isomerization of integrated hydrazone derivatives allows for probing and tailoring resonance energy transfer (ET) processes as a function of excitation wavelength, providing a novel pathway for ET modulation.
(© 2022 Wiley-VCH GmbH.)
Databáze: MEDLINE
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