A supramolecular concept for stabilization of liquid crystalline blue phases – A first step towards 3D-photonic sensors

• Applicant: Professor Michael Giese, Ph.D.
• Subject Area: Organic Molecular Chemistry - Synthesis and Characterisation
• Term: from 2019 to 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 417615610

• Final Report Year: 2023

Final Report Abstract

During the research project a modular tool box for hydrogen-bonded Blue Phase liquid crystals was established. The tool box was employed to systematically study the structure property relationships of the supramolecular assemblies to broaden the temperature range of the BPs and lower the transition temperatures. While the BPs could not successfully stabilized over a broader temperature range, the transition temperatures were lowered significantly (e.g. by the use of difluorphenol as hydrogen bond donor or the introduction of fluorine substituents at the hydrogen bon acceptor moiety) making the materials appealing for applications in photonic sensing.

Publications

• GLCC 2022 in Würzburg am 28.03.2022, „Making Supramolecular Blue Phase Liquid Crystals Stable for Application“ (Poster)
  Michael Giese
  
• Hydrogen‐Bonded Cholesteric Liquid Crystals—A Modular Approach Toward Responsive Photonic Materials. Advanced Photonics Research, 3(5).
  Malotke, Florian; Spengler, Matthias; Pschyklenk, Lukas; Saccone, Marco; Kaul, Peter & Giese, Michael
  
• SupraChem 2022 in Mainz am 04.07.2022, „Stabilising Blue Phase Liquid Crystals via Supramolecular Tools“
  Michael Giese
  
• Supramolecular Tools for the Stabilisation of Blue-Phase Liquid Crystals. Organic Materials, 4(04), 190-203.
  Kraus, Felix & Giese, Michael