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Luminescent Solar Concentrators Based on Renewable Polyester Matrices.

Tristan A Geervliet1, Ionela Gavrila1, Giuseppe Iasilli2

  • 1Department of Chemical Engineering/Product Technology, ENTEG, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands.

Chemistry, an Asian Journal
|December 15, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces renewable polyesters as bio-based alternatives for PMMA in luminescent solar concentrators (LSCs). These new materials demonstrate comparable or superior optical efficiency to traditional PMMA-based LSCs.

Keywords:
aggregation-induced emissionfluorophoreshost matricesluminescent solar concentratorsrenewable polyesters

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Polymer Chemistry

Background:

  • Polymethyl methacrylate (PMMA) is a common host matrix for luminescent solar concentrators (LSCs).
  • There is a growing need for sustainable and bio-based alternatives in materials science.
  • Developing efficient LSCs requires compatible host matrices for luminescent materials.

Purpose of the Study:

  • To synthesize and characterize novel bio-based polyesters as alternatives to PMMA for LSCs.
  • To evaluate the optical performance of LSCs utilizing these new polyester matrices.
  • To investigate the compatibility of different fluorophores within the bio-based matrices.

Main Methods:

  • Two renewable polyesters, a homopolymer (IGPn) and a copolymer (GTPn), were synthesized via melt-polycondensation.
  • Polyester properties (transparency, amorphous nature, glass transition temperature, thermal resistance) were analyzed.
  • Thin polymer films incorporating Lumogen Red (LR) and a TPETPAFN fluorophore were prepared and characterized for homogeneity and optical efficiency (ηopt).

Main Results:

  • The synthesized polyesters exhibited optical transparency, amorphous structure, Tg > 45°C, and PMMA-comparable thermal resistance.
  • GTPn-based films showed high homogeneity, attributed to terephthalate units and higher molecular weight.
  • LSCs based on GTPn achieved optical efficiencies of 7.7% (LR) and 7.1% (TPETPAFN), comparable or superior to PMMA-based LSCs.

Conclusions:

  • Bio-based polyesters, particularly GTPn, are viable and high-performing alternatives to PMMA for LSCs.
  • These renewable materials demonstrate excellent compatibility with tested fluorophores.
  • The study supports the use of sustainable polyesters for advanced, high-efficiency luminescent solar concentrator applications.