Pathway control in cooperative vs. anti-cooperative supramolecular polymers

Lorena Herkert, Jörn Droste, Kalathil K. Kartha, Peter A. Korevaar, Tom F.A. de Greef, Michael Ryan Hansen, Gustavo Fernández (Corresponding author)

    Research output: Contribution to journalArticleAcademicpeer-review

    52 Citations (Scopus)
    79 Downloads (Pure)

    Abstract

    Controlling the nanoscale morphology in assemblies of π-conjugated molecules is key to developing supramolecular functional materials. Here, we report an unsymmetrically substituted amphiphilic PtII complex 1 that shows unique self-assembly behavior in nonpolar media, providing two competing anti-cooperative and cooperative pathways with distinct molecular arrangement (long- vs. medium-slipped, respectively) and nanoscale morphology (discs vs. fibers, respectively). With a thermodynamic model, we unravel the competition between the anti-cooperative and cooperative pathways: buffering of monomers into small-sized, anti-cooperative species affects the formation of elongated assemblies, which might open up new strategies for pathway control in self-assembly. Our findings reveal that side-chain immiscibility is an efficient method to control anti-cooperative assemblies and pathway complexity in general.

    Original languageEnglish
    Pages (from-to)11344-11349
    Number of pages6
    JournalAngewandte Chemie - International Edition
    Volume58
    Issue number33
    Early online date22 May 2019
    DOIs
    Publication statusPublished - 12 Aug 2019

    Keywords

    • cooperativity
    • pathway complexity
    • self-assembly
    • supramolecular polymerization
    • π-conjugated systems
    • pi-conjugated systems

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