Buchumschlag

Azaacene diradicals based on non-kekulé meta-quinodimethane with large two-photon cross-sections in the infrared spectral region

Weitere Versionen anzeigen (1)

Non-Kekulé quinoidal azaacences m-A (1 a,b) were synthesized and compared to their para- and ortho-quinodimethane analogues. m-A display high diradical characters (1 b: y0 = 0.88) due to their meta-quinodimethane (m-QDM) topology. Electron paramagnetic, nuclear magnetic resonance spectroscopies and...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Fuchs, Kathleen (VerfasserIn) , Oberhof, Nils (VerfasserIn) , Sauter, Gabriel (VerfasserIn) , Pollien, Audrey (VerfasserIn) , Brödner, Kerstin (VerfasserIn) , Rominger, Frank (VerfasserIn) , Freudenberg, Jan (VerfasserIn) , Dreuw, Andreas (VerfasserIn) , Tegeder, Petra (VerfasserIn) , Bunz, Uwe H. F. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: November 25, 2024
In: Angewandte Chemie. International edition
Year: 2024, Jahrgang: 63, Heft: 48, Pages: 1-7
ISSN:1521-3773
DOI:10.1002/anie.202406384
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1002/anie.202406384
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202406384
Volltext
Verfasserangaben:Kathleen Fuchs, Nils Oberhof, Gabriel Sauter, Audrey Pollien, Kerstin Brödner, Frank Rominger, Jan Freudenberg, Andreas Dreuw, Petra Tegeder, and Uwe H.F. Bunz
Beschreibung
Zusammenfassung:Non-Kekulé quinoidal azaacences m-A (1 a,b) were synthesized and compared to their para- and ortho-quinodimethane analogues. m-A display high diradical characters (1 b: y0 = 0.88) due to their meta-quinodimethane (m-QDM) topology. Electron paramagnetic, nuclear magnetic resonance spectroscopies and supraquantum interference device measurements in combination with quantum-chemical calculations revealed singlet ground states for m-A with singlet-triplet gaps ΔEST (0.13-0.25 kcal mol−1) and thermally populated triplet states. These non-Kekulé structures are over all void of zwitterionic character and possess record high two-photon absorption cross sections over a broad spectral range in the near-infrared.
Beschreibung:Online veroffentlicht: 27 August 2024
Gesehen am 31.03.2025
Beschreibung:Online Resource
ISSN:1521-3773
DOI:10.1002/anie.202406384

Ähnliche Einträge