A Pentacene-based Nanotube Displaying Enriched Electrochemical and Photochemical Activities
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Yksityiskohdat
| Alkuperäiskieli | Englanti |
|---|---|
| Sivut | 1115-1119 |
| Julkaisu | Angewandte Chemie - International Edition |
| Vuosikerta | 58 |
| Numero | 4 |
| Varhainen verkossa julkaisun päivämäärä | 2018 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - tammikuuta 2019 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli |
Tiivistelmä
Unlike previously well-studied, acyclic pentacene oligomers, the first synthesis of a cyclic pentacene trimer with a fixed tubular conformation is reported. A short-step synthesis starting from common pentacenequinone yielded the target molecule with a 1.5 nanometer length and a subnanometer pore. Steady-state spectroscopic analyses revealed that the close proximity of the non-conjugated, three pentacene chromophores allows the nanotube to display stepwise electrochemical/chemical oxidation characteristics. Furthermore, time-resolved transient absorption measurements elucidated the generation of an excited triplet state of the nanotube, with high quantum yield reaching about 180 % through intramolecular singlet fission and a very long triplet lifetime.