Exciplex Emission and Förster Resonance Energy Transfer in Polycyclic Aromatic Hydrocarbon-Based Bischromophoric Cyclophanes and Homo[2]catenanes.

Autor: Garci A; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Abid S; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., David AHG; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Jones LO; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Azad CS; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Ovalle M; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Brown PJ; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.; Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Stern CL; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Zhao X; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Malaisrie L; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Schatz GC; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Young RM; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.; Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Wasielewski MR; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.; Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States., Stoddart JF; Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.; School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.; Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China.
Jazyk: angličtina
Zdroj: Journal of the American Chemical Society [J Am Chem Soc] 2023 Aug 23; Vol. 145 (33), pp. 18391-18401. Date of Electronic Publication: 2023 Aug 11.
DOI: 10.1021/jacs.3c04213
Abstrakt: Energy transfer and exciplex emission are not only crucial photophysical processes in many living organisms but also important for the development of smart photonic materials. We report, herein, the rationally designed synthesis and characterization of two highly charged bischromophoric homo[2]catenanes and one cyclophane incorporating a combination of polycyclic aromatic hydrocarbons, i.e., anthracene, pyrene, and perylene, which are intrinsically capable of supporting energy transfer and exciplex formation. The possible coconformations of the homo[2]catenanes, on account of their dynamic behavior, have been probed by Density Functional Theory calculations. The unique photophysical properties of these exotic molecules have been explored by steady-state and time-resolved absorption and fluorescence spectroscopies. The tetracationic pyrene-perylene cyclophane system exhibits emission emanating from a highly efficient Förster resonance energy transfer (FRET) mechanism which occurs in 48 ps, while the octacationic homo[2]catenane displays a weak exciplex photoluminescence following extremely fast (<0.3 ps) exciplex formation. The in-depth fundamental understanding of these photophysical processes involved in the fluorescence of bischromophoric cyclophanes and homo[2]catenanes paves the way for their use in future bioapplications and photonic devices.
Databáze: MEDLINE
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