Synthesis, properties, and switching of valence tautomeric metal complex in solution, solid state, and self-assembled monolayers: from photoswitches to chemosensors

• Applicant: Privatdozent Dr. Marat Khusniyarov
• Subject Area: Inorganic Molecular Chemistry - Synthesis and Characterisation
• Term: from 2018 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 415715861

• Final Report Year: 2025

Final Report Abstract

Two research directions have been explored in this project dealing with molecular switches based on redox isomers: their deposition to surfaces via chemisorption and their potential use as chemosensors. In this work, we developed and demonstrated a (partially) successful approach on chemisorption of this class of molecular switches and a related class of switchable spin-crossover metal complexes. Also, we have developed and successfully demonstrated the working principals of chemosensors based on redox isomer with labile ligands. The sensors responded colorimetrically and magnetically.

Publications

• A valence tautomeric cobalt–dioxolene complex with an anchoring group for prospective chemical grafting to metal oxides. Dalton Transactions, 49(48), 17532-17536.
  Mörtel, Max; Seller, Michael; Heinemann, Frank W. & Khusniyarov, Marat M.
  
• Molecular Valence Tautomeric Metal Complexes for Chemosensing. Inorganic Chemistry, 60(18), 14230-14237.
  Mörtel, Max; Oschwald, Johannes; Scheurer, Andreas; Drewello, Thomas & Khusniyarov, Marat M.
  
• Low-Spin to Low-Spin Valence Tautomeric Transition in Cobalt Dioxolenes. American Chemical Society (ACS).
  Mörtel, Max; Oschwald, Johannes; Scheurer, Andreas; Drewello, Thomas & Khusniyarov, Marat
  
• Low-spin to low-spin valence tautomeric transition in cobalt bis-dioxolenes. Dalton Transactions, 53(9), 4098-4107.
  Mörtel, Max; Goodner, Stephen J.; Oschwald, Johannes; Scheurer, Andreas; Drewello, Thomas & Khusniyarov, Marat M.
  
• Transition Metal Complexes as Molecular Switches. Dissertation, FAU Erlangen-Nürnberg
  M. Mörtel