A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
An aryl-fused redox-active tetrathiafulvalene with enhanced mixed-valence and radical-cation dimer stabilities (2018)

Schröder, H. V., Witte, F., Gaedke, M., Sobottka, S., Suntrup, L., Hupatz, H., Valkonen, A., Paulus, B., Rissanen, K., Sarkar, B., & Schalley, C. A. (2018). An aryl-fused redox-active tetrathiafulvalene with enhanced mixed-valence and radical-cation dimer stabilities. Organic and Biomolecular Chemistry, 16(15), 2741-2747. https://doi.org/10.1039/C8OB00415C

JYU-tekijät tai -toimittajat

Valkonen, Arto
Rissanen, Kari

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Schröder, Hendrik V.; Witte, Felix; Gaedke, Marius; Sobottka, Sebastian; Suntrup, Lisa; Hupatz, Henrik; Valkonen, Arto; Paulus, Beate; Rissanen, Kari; Sarkar, Biprajit; et al.

Lehti tai sarja: Organic and Biomolecular Chemistry

ISSN: 1477-0520

eISSN: 1477-0539

Julkaisuvuosi: 2018

Volyymi: 16

Lehden numero: 15

Artikkelin sivunumerot: 2741-2747

Kustantaja: Royal Society of Chemistry

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1039/C8OB00415C

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Tiivistelmä

Molecular recognition of stable organic radicals is a relatively novel, but important structural binding motif in supramolecular chemistry. Here, we report on a redox-switchable veratrole-fused tetrathiafulvalene derivative VTTF which is ideally suited for this purpose and for the incorporation into stimuli-responsive systems. As revealed by electrochemistry, UV/Vis measurements, X-ray analysis, and electrocrystallisation, VTTF can be reversibly oxidised to the corresponding radical-cation or dication which shows optoelectronic and structural propterties similar to tetrathiafulvalene and tetrakis(methylthio)tetrathiafulvalene. However, theoretical calculations, variable temperature EPR, and NIR spectroscopy indicate that the dispersion-driven binding in the mixed-valence dimer (VTTF2)˙+ (KMV = 69 M−1 in CH2Cl2) and the radical-cation dimer (VTTF˙+)2 (KRC = 38 M−1 in CH3CN) is significantly enhanced by the additional veratrole π-surface in comparison to pristine tetrathiafulvalene.

YSO-asiasanat: supramolekulaarinen kemia

Tieteenalat: