Significant Enhancement of Two-Photon Excited Fluorescence in Water-Soluble Triphenylamine-Based All-Organic Compounds.

Autor: Gong Y; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Bi X; Department of Physical Sciences, Charleston Southern University, 9200 University Blvd, Charlest on, South Carolina 29485, United States., Chen N; Department of Chemistry and Biochemistry, College of Charleston, 66 George Street, Charleston, South Carolina 29424, United States., Forconi M; Department of Chemistry and Biochemistry, College of Charleston, 66 George Street, Charleston, South Carolina 29424, United States., Kuthirummal N; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Teklu A; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Gao B; Department of Physics and Astronomy, Hunter College, City University of New York, New York, New York 10065, United States., Koenemann J; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Harris N; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Brennan C; Department of Physics and Astronomy, College of Charleston, 58 Coming Street, Charleston, South Carolina 29424, United States., Thomas M; Department of Physical Sciences, Charleston Southern University, 9200 University Blvd, Charlest on, South Carolina 29485, United States., Barnes T; Department of Physical Sciences, Charleston Southern University, 9200 University Blvd, Charlest on, South Carolina 29485, United States., Hu M; Department of Mechanical Engineering, University of South Carolina, 541 Main Street, Columbia, South Carolina 29208, United States.
Jazyk: angličtina
Zdroj: The journal of physical chemistry. B [J Phys Chem B] 2022 Jul 28; Vol. 126 (29), pp. 5513-5522. Date of Electronic Publication: 2022 Jul 13.
DOI: 10.1021/acs.jpcb.2c03514
Abstrakt: Understanding water-soluble and environmentally friendly two-photon absorption (TPA) molecules benefits the design of superior organic complexes for biomedical, illumination, and display applications. In this work, we designed two triphenylamine-based all-organic compounds and explored the mechanism of enhanced TP fluorescence in water solutions for potential applications. Experimentally, we showed that adding protein into our TPA molecule solution can drastically boost the TP fluorescence. Numerical simulations reveal that the TPA molecules prefer to dock inside the protein complex. We hypothesize that the interaction between our triphenylamine-based all-organic compounds and water molecules lead to non-radiative decay processes, which prevent strong TP fluorescence in the water solution. Therefore, the protection by, for example, protein molecules from such interactions can be a universal strategy for superior functioning of organic TPA molecules. Further experiments and numerical simulations support our hypothesis. The present study may facilitate the design of superior water-soluble and environmentally friendly superior organic complexes.
Databáze: MEDLINE