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    Blue- and white-light-emitting 2D-coordination polymers and their solid-state photodimerization reaction

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    Name:
    Blue and white_CrystalEngComm.pdf
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    561.5Kb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-10-06
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    Type
    Article
    Authors
    Peedikakkal, Abdul Malik P. cc
    Jalilov, Almaz S. cc
    Shaikh, Abdul Rajjak
    Kalanthoden, Abdul Nasar cc
    Al-Saadi, Abdulaziz A. cc
    KAUST Department
    KAUST Catalysis Center (KCC)
    Date
    2021
    Embargo End Date
    2022-10-06
    Submitted Date
    2021-07-28
    Permanent link to this record
    http://hdl.handle.net/10754/673023
    
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    Abstract
    Two Pb(II) coordination polymers (CPs), namely [Pb(μ-bpe)(μ-O2CCH3)2]n (1) and [Pb(μ-bpe)(μ-O2CH)2]n (2), have been isolated from the reaction of Pb(OAc)2·3H2O with 1,2-bis(4-pyridyl)ethene (bpe) in the presence of acetate and formate anionic ligands, respectively. Compounds 1 and 2 formed 2D sheet-like structures, constructed by bridging acetate and formate carboxylate ligands. The bpe ligand containing the olefinic C[double bond, length as m-dash]C bonds was perfectly brought to the proximity of Schmidt topolochemical criteria for 2. The 2D sheet in 2 underwent 67% of the photodimerization reaction in the solid state, while the 2D sheet in 1 was photochemically stable. Therefore, the photochemical reactivity of 1 and 2 was rationalized based on the orientation of the olefinic C[double bond, length as m-dash]C bonds, which was brought close to each other due to the distinct bridging of the carboxylates and the Pb(II) metal ions. The room temperature solid-state photoluminescence (PL) revealed that compound 1 exhibited a near white-light emission and the blue-light emission for 2 upon excitation at 365 nm. The differences in the emission of the two 2D-sheets were correlated with the bridging carboxylate ligands.
    Citation
    Peedikakkal, A. M. P., Jalilov, A. S., Shaikh, A. R., Kalanthoden, A. N., & Al-Saadi, A. A. (2021). Blue- and white-light-emitting 2D-coordination polymers and their solid-state photodimerization reaction. CrystEngComm. doi:10.1039/d1ce00991e
    Sponsors
    A. M. P. Peedikakkal would like to acknowledge the support provided by the Deanship of Scientific Research (DSR) at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through project No. DF191031. A. M. P. Peedikakkal is also grateful to Prof. Jagadese J. Vittal, National University of Singapore for helpful discussions.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    CRYSTENGCOMM
    DOI
    10.1039/d1ce00991e
    Additional Links
    http://xlink.rsc.org/?DOI=D1CE00991E
    ae974a485f413a2113503eed53cd6c53
    10.1039/d1ce00991e
    Scopus Count
    Collections
    Articles; KAUST Catalysis Center (KCC)

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