Versatile Thermochromic Supramolecular Materials Based on Competing Charge Transfer Interactions

Tianyu Yuan, Mariela Vazquez, Amanda N. Goldner, Yan Xu, Rafael Contrucci, Millicent A. Firestone, Mark A. Olson*, Lei Fang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Stimuli-responsive supramolecular materials are of paramount importance for a broad range of applications. It is essential to impart versatility, sustainability, and scalability into these materials. Herein the authors report the design and synthesis of a new class of thermochromic supramolecular materials, which can easily be processed from water via a reversible sol–gel transition. The supramolecular materials are composed of a bis-bipyridinium acceptor, a π-electron-rich naphthalene derivative donor, and halogen counterions. Long helical nanofibers can be assembled in water, gelating at room temperature. Inked designs, thin films, and aerogels are solution-processed to exhibit thermochromic behavior based on competing π → π* and n → π* charge transfer interactions. By using different π-electron rich donors, and counterions, the authors demonstrate that both the color observed at room temperature and at high temperatures can be tailored. The results open up the door to develop novel amphiphile-based thermochromes with water processability and a large tunable color palette.

Original languageEnglish (US)
Pages (from-to)8604-8612
Number of pages9
JournalAdvanced Functional Materials
Volume26
Issue number47
DOIs
StatePublished - Dec 20 2016
Externally publishedYes

Keywords

  • charge transfer
  • recyclable
  • reversible
  • stimuli-responsive
  • supramolecular materials

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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