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Copper(I)-Thiolate Coordination Polymers for In Situ Temperature Sensing in PDMS.

Buqin Xu1, Saly Hawila1, Antoine Bérut2

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Summary
This summary is machine-generated.

Researchers developed flexible composite films using copper-thiolate coordination polymers (CPs) for stable RGB emission. These films enable advanced optical temperature sensing with dual-camera systems, offering a new complementary technology to infrared cameras.

Keywords:
composite filmscoordination polymersdual emissionnanothermometrywhite light

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Area of Science:

  • Materials Science
  • Chemistry
  • Optics

Background:

  • Copper-thiolate coordination polymers (CPs) exhibit photoluminescence and thermal stability, making them promising for optical temperature sensors.
  • Fabricating composite films with stable red, green, and blue (RGB) emission remains a challenge due to material limitations and efficiency issues.

Purpose of the Study:

  • To develop a method for creating homogeneous, flexible, and large-scale composite films with stable RGB emission using CPs.
  • To explore the potential of these composite films for ratiometric temperature sensing applications.

Main Methods:

  • Dispersing insoluble red- and green-emissive CPs homogeneously within polydimethylsiloxane (PDMS) matrices.
  • Mixing CPs with a blue-emissive organic polymer to achieve various colors, including white.
  • Utilizing a dual-camera setup for ratiometric temperature sensing measurements.

Main Results:

  • Fabrication of transparent, flexible, and stretchable composite films with tunable RGB emission.
  • Demonstration of a broad spectrum of colors, including white, by adjusting the ratio of red, green, and blue emitters.
  • Successful ratiometric temperature sensing with good spatial and temporal resolution using a composite film of red- and green-emissive CPs.

Conclusions:

  • The developed process enables the creation of versatile, environmentally friendly emissive composite films.
  • These films show significant potential for optical temperature sensing, offering a complementary approach to existing infrared technologies.
  • The study paves the way for advanced optical sensors capable of measuring surface temperatures with high resolution.