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Tailoring π-conjugation and vibrational modes to steer on-surface synthesis of pentalene-bridged ladder polymers

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    0539914 - FZÚ 2021 RIV GB eng J - Článek v odborném periodiku
    De La Torre Cerdeño, Bruno - Matěj, Adam - Sánchez-Grande, A. - Cirera, B. - Mallada Faes, Benjamin Jose - Rodriguez-Sanchez, E. - Santos, J. - Mendieta Moreno, Jesús Ignacio - Edalatmanesh, Shayan - Lauwaet, K. - Otyepka, M. - Medveď, M. - Buendía, Á. - Miranda, R. - Martín, N. - Jelínek, Pavel - Écija, D.
    Tailoring π-conjugation and vibrational modes to steer on-surface synthesis of pentalene-bridged ladder polymers.
    Nature Communications. Roč. 11, č. 1 (2020), s. 1-8, č. článku 4567. ISSN 2041-1723. E-ISSN 2041-1723
    Grant ostatní:AV ČR(CZ) AP1601
    Program:Akademická prémie - Praemium Academiae
    Institucionální podpora: RVO:68378271
    Klíčová slova: nc-AFM * on surface chemistry * 1D chains * DFT * topology
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
    Impakt faktor: 14.919, rok: 2020
    http://hdl.handle.net/11104/0317607

    First, we on-surface design a 1D pi-conjugated polymer with specific pi-topology, which is based on bisanthene monomers linked by cumulene bridges that tune specific vibrational modes. In a second step, upon further annealing, such vibrational modes steer the two-fold cyclization reaction between adjacent bisanthene moieties, which gives rise to a long and free-defect pentalene-bridged conjugated ladder polymer featuring a low band gap. In addition, high resolution atomic force microscopy allows us to identify by atomistic insights the resonant form of the polymer, thus confirming the validity of the Glidewell and Lloyd's rules for aromaticity. This on-surface synthetic strategy may stimulate exploiting previously precluded reactions towards novel pi-conjugated polymers with specific structures and properties.
    Trvalý link: http://hdl.handle.net/11104/0317607

     
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