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Photothermal Perylene Bisimide Hydrogels.

Lisa Thomson1, Rebecca E Ginesi1, Daniel D Osborne1

  • 1School of Chemistry, University of Glagsow, G12 8QQ, Glasgow, UK.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 19, 2023
PubMed
Summary
This summary is machine-generated.

Perylene bisimide (PBI) gels can generate heat when exposed to specific light wavelengths, enabling remote heating and phase transitions. This photothermal effect is achieved by forming PBI radical anions electrochemically or via multicomponent systems.

Keywords:
PBIgelmulticomponentphotothermalradical anion

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Area of Science:

  • Materials Science
  • Photochemistry
  • Supramolecular Chemistry

Background:

  • Low molecular weight gelators, such as perylene bisimides (PBIs), can exhibit photothermal properties.
  • The formation of PBI radical anions leads to new absorption bands, enabling light-induced heating.

Purpose of the Study:

  • To investigate the photothermal effect in perylene bisimide (PBI) gels.
  • To explore methods for generating PBI radical anions without UV light.
  • To demonstrate the induction of phase transitions using photothermal heating.

Main Methods:

  • Formation of PBI radical anions using electrochemical methods.
  • Utilization of multicomponent systems for radical anion generation.
  • Irradiation with specific light wavelengths to induce photothermal heating.
  • Observation of phase transitions in solutions above the gels.

Main Results:

  • PBI gels demonstrate significant photothermal heating upon irradiation.
  • Electrochemical and multicomponent systems effectively generate PBI radical anions.
  • Photothermal heating successfully induced phase transitions in overlying solutions.
  • The photothermal effect can heat both the gel and its surrounding environment.

Conclusions:

  • PBI gels are effective photothermal agents.
  • Non-UV light methods can be employed to activate the photothermal effect.
  • This technology offers a novel approach for remote heating and triggering phase transitions in solutions.