Conjugated Metal-Organic Macrocycles: Synthesis, Characterization, and Electrical Conductivity.

Autor: Zasada LB, Guio L, Kamin AA, Dhakal D, Monahan M, Seidler GT, Luscombe CK; Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan., Xiao DJ
Jazyk: angličtina
Zdroj: Journal of the American Chemical Society [J Am Chem Soc] 2022 Mar 16; Vol. 144 (10), pp. 4515-4521. Date of Electronic Publication: 2022 Mar 07.
DOI: 10.1021/jacs.1c12596
Abstrakt: The dimensional reduction of solids into smaller fragments provides a route to achieve new physical properties and gain deeper insight into the extended parent structures. Here, we report the synthesis of CuTOTP-OR (TOTP n - = 2,3,6,7-tetraoxidotriphenylene), a family of copper-based macrocycles that resemble truncated fragments of the conductive two-dimensional (2D) metal-organic framework Cu 3 (HHTP) 2 (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene). The planar metal-organic macrocycles self-assemble into ordered nanotubes with internal diameters of ∼2 nm and short interlayer distances of ∼3.20 Å. Strong π-π stacking interactions between macrocycles facilitate out-of-plane charge transport, and pressed pellet conductivities as high as 2(1) × 10 -3 S cm -1 are observed. Peripheral alkyl functionalization enhances solution processability and enables the fabrication of thin-film field-effect transistor devices. Ambipolar charge transport is observed, suggesting that similar behavior may be operative in Cu 3 (HHTP) 2 . By coupling the attractive features of metal-organic frameworks with greater processability, these macrocycles enable facile device integration and a more nuanced understanding of out-of-plane charge transport in 2D conductive metal-organic frameworks.
Databáze: MEDLINE