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

Kalle Kolari, Evgeny Bulatov, Rajendhraprasad Tatikonda, Kia Bertula, Elina Kalenius, Nonappa Nonappa, Matti Haukka

Research output: Contribution to journalArticleScientificpeer-review

16 Downloads (Pure)

Abstract

Square planar platinum(II) complexes are attractive building blocks for multifunctional soft materials due totheir unique optoelectronic properties. However, for soft materials derived from synthetically simple discretemetal complexes, achieving a combination of optical properties, thermoresponsiveness and excellentmechanical properties is a major challenge. Here, we report the rapid self-recovery of luminescent metallogelsderived from platinum(II) complexes of perfluoroalkyl and alkyl derivatives of terpyridine ligands. Using singlecrystal X-ray diffraction studies, we show that the presence of synergistic platinum–platinum (PtPt) metallo-polymerization and fluorine–fluorine (FF) interactions are the major drivingforces in achieving hierarchicalsuperstructures. The resulting bright red gels showedthe presence of highly entangled three-dimensionalnetworks and helical nanofibres with both (PandM) handedness. The gels recoverupto87%oftheiroriginalstorage modulus even after several cycles under oscillatory step-strain rheological measurements showingrapid self-healing. The luminescence properties, along with thermo- and mechanoresponsive gelation,provide the potential to utilize synthetically simplediscrete complexes in advanced optical materials.
Original languageEnglish
Pages (from-to)2795-2802
Number of pages8
JournalSoft Matter
Volume16
Issue number11
DOIs
Publication statusPublished - 14 Feb 2020
MoE publication typeA1 Journal article-refereed

Fingerprint Dive into the research topics of 'Self-healing, luminescent metallogelation drivenby synergistic metallophilic and fluorine–fluorine interactions'. Together they form a unique fingerprint.

  • Projects

    HYBER: The Academy of Finland's Centre of Excellence in Molecular Engineering of Biosynthetic Hybrid Materials research (2014-2019)

    Cherian, T., Nonappa, N., Ikkala, O., Bertula, K., Morits, M., Hynninen, V., Myllymäki, T., Toivonen, M., Sohrabi, F., Haataja, J., Sanchez Sanchez, A., Rissanen, S. & Poutanen, M.

    01/01/201730/06/2020

    Project: Academy of Finland: Other research funding

    Equipment

    OtaNano

    Anna Rissanen (Manager)

    Aalto University

    Facility/equipment: Facility

  • Cite this