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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 - Journal Article
    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
    Grant - others:AV ČR(CZ) Praemium Academiae
    Institutional support: RVO:68378271
    Keywords : nc-AFM * on surface chemistry * 1D chains * DFT * topology
    Subject RIV: BM - Solid Matter Physics ; Magnetism
    OBOR OECD: Condensed matter physics (including formerly solid state physics, supercond.)
    Impact factor: 12.121, year: 2019
    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.
    Permanent Link: http://hdl.handle.net/11104/0317607
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