Supramolecular Singlet Fission of Pentacene Dimers within Polyaromatic Capsules

Lorenzo Catti, Haruna Narita, Yuya Tanaka, Hayato Sakai, Taku Hasobe, Nikolai V. Tkachenko, Michito Yoshizawa

Tutkimustuotos: ArtikkeliTieteellinenvertaisarvioitu

22 Sitaatiot (Scopus)
18 Lataukset (Pure)

Abstrakti

We herein report a new set of supramolecular nanotools for the generation and modulation of singlet fission (SF) of noncovalent/covalent pentacene dimers. Two molecules of a pentacene monomer with bulky substituents are facilely encapsulated by a polyaromatic capsule, composed of naphthalene-based bent amphiphiles, in water. The encapsulated noncovalent dimer converts to otherwise undetectable triplet pairs and an individual triplet in high quantum yields (179% and 53%, respectively) even under high dilution conditions. Within the capsule, a covalently linked pentacene dimer with bulky groups generates two triplet pair intermediates in parallel, which are hardly distinguished in bulk solution, in excellent total quantum yield (196%). The yield of the individual triplet is enhanced by 1.6 times upon encapsulation. For both types of pentacene dimers, the SF features can be readily tuned by changing the polyaromatic panels of the capsule (i.e., anthracene and phenanthrene).

AlkuperäiskieliEnglanti
Sivut9361–9367
Sivumäärä7
JulkaisuJournal of the American Chemical Society
Vuosikerta143
Numero25
DOI - pysyväislinkit
TilaJulkaistu - 16 kesäk. 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

This work was supported by JSPS KAKENHI (Grant Nos. JP17H05359/ JP18H01990/ JP17K14476/ JP17H05381/ JP17H05270/ JP18H01957/ JP20KK0120, 20K05652, 20H05234, and JP21H01908) and “Support for Tokyotech Advanced Researchers (STAR)”. The computations were partly performed using Research Center for Computational Science, Okazaki, Japan. L.C. thanks the JSPS and Humboldt Postdoctoral Fellowship.

Julkaisufoorumi-taso

  • Jufo-taso 3

!!ASJC Scopus subject areas

  • Catalysis
  • Yleinen kemia
  • Biochemistry
  • Colloid and Surface Chemistry

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