On-surface synthesis of doubly-linked one-dimensional pentacene ladder polymers

0539764 - FZÚ 2021 RIV GB eng J - Článek v odborném periodiku
Biswas, K. - Urgel, J. I. - Sánchez-Grande, A. - Edalatmanesh, Shayan - Santos, J. - Cirera, B. - Mutombo, Pingo - Lauwaet, K. - Miranda, R. - Jelínek, Pavel - Martín, N. - Ecija, D.
On-surface synthesis of doubly-linked one-dimensional pentacene ladder polymers.
Chemical Communications. Roč. 56, č. 97 (2020), s. 15309-15312. ISSN 1359-7345. E-ISSN 1364-548X
Grant ostatní: AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institucionální podpora: RVO:68378271
Klíčová slova: nc-AFM * on surface chemistry * polymers
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 6.222, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1039/d0cc06865a

On-surface synthesis has recently become an essential approach toward the formation of carbon-based nanostructures. Special emphasis is set on the synthesis of π-conjugated polymers taking into consideration their relevance and potential in organic electronics, optoelectronics and spintronics. Here, we report the on-surface synthesis of conjugated ladder polymers consisting of pentacene units doubly-linked via ethynylene-like bonds on the Au(111) surface under ultra-high vacuum conditions. To this aim, we have sublimed pentacene-like precursors equipped with four :CBr2 functional groups to steer the desired reaction upon annealing on the surface. The atomically precise structure of the obtained polymers has been unambiguously characterized via low-temperature scanning tunneling microscopy and non-contact atomic force microscopy. In addition, scanning tunneling spectroscopy complemented with density-functional theory calculations reveal the narrow bandgap of the polymer.

Trvalý link: http://hdl.handle.net/11104/0317464