Self-healing, luminescent metallogelation driven by synergistic metallophilic and fluorine–fluorine interactions

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-03-21
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Language
en
Pages
8
2795-2802
Series
Soft Matter, Volume 16, issue 11
Abstract
Square planar platinum(ii) complexes are attractive building blocks for multifunctional soft materials due to their unique optoelectronic properties. However, for soft materials derived from synthetically simple discrete metal complexes, achieving a combination of optical properties, thermoresponsiveness and excellent mechanical properties is a major challenge. Here, we report the rapid self-recovery of luminescent metallogels derived from platinum(ii) complexes of perfluoroalkyl and alkyl derivatives of terpyridine ligands. Using single crystal X-ray diffraction studies, we show that the presence of synergistic platinum-platinum (PtMIDLINE HORIZONTAL ELLIPSISPt) metallopolymerization and fluorine-fluorine (FMIDLINE HORIZONTAL ELLIPSISF) interactions are the major driving forces in achieving hierarchical superstructures. The resulting bright red gels showed the presence of highly entangled three-dimensional networks and helical nanofibres with both (P and M) handedness. The gels recover up to 87% of their original storage modulus even after several cycles under oscillatory step-strain rheological measurements showing rapid self-healing. The luminescence properties, along with thermo- and mechanoresponsive gelation, provide the potential to utilize synthetically simple discrete complexes in advanced optical materials.
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Kolari , K , Bulatov , E , Tatikonda , R , Bertula , K , Kalenius , E , Nonappa , N & Haukka , M 2020 , ' Self-healing, luminescent metallogelation driven by synergistic metallophilic and fluorine–fluorine interactions ' , Soft Matter , vol. 16 , no. 11 , pp. 2795-2802 . https://doi.org/10.1039/C9SM02186H