Perylene polyether hybrids: Highly soluble, luminescent, redox-active dyes
- Univ. of North Carolina, Chapel Hill, NC (United States). Kenan Labs. of Chemistry
A new class of hybrid redox polyether melts has been prepared by covalent attachment of short polyethylene oxide tails to perylene, resulting in highly viscous materials with improved solubility in common solvents ranging from alcohols to toluene. Solid-state voltammetry of the neat, undiluted materials is made possible by dissolution of LiClO{sub 4} supporting electrolyte in them. The perylene{sup 0/1{minus}} electron self-exchange rate constants (k{sub EX}) are large. Temperature studies show that the energy barrier is also large but that the reactions are adiabatic. The ionic conductivity of the melts was measured to assess the effects of electron migration. The absorption and fluorescence properties of the perylene derivatives in dilute solution are independent of polyether tail length, while the fluorescence of thin undiluted films of the hybrids is red-shifted (relative to dilute solution) by ca. 125 nm and is dominated by excimer emission.
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 316251
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 11 Vol. 10; ISSN CMATEX; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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