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Natural Pigments-Based Two-Component White Light Emitting Systems.

Kailash Devi1, Vivek Anand1, Yash Barot2

  • 1Department of Chemistry, University Institute of Science, Chandigarh University, Gharuan, Mohali, 140413, Punjab, India.

Journal of Fluorescence
|March 16, 2024
PubMed
Summary
This summary is machine-generated.

New white light systems were created using fruit and vegetable extracts like java plum, carrot, and beetroot. These systems utilize resonance energy transfer (RET) for efficient light emission, demonstrating potential for novel lighting applications.

Keywords:
CIEDFTResonance energy transferWhite light emission

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Area of Science:

  • Materials Science
  • Photochemistry
  • Biophysics

Background:

  • Developing efficient white light-emitting systems is crucial for lighting technology.
  • Natural pigments offer a sustainable and eco-friendly alternative to synthetic materials.
  • Resonance energy transfer (RET) is a key mechanism for energy transfer in photophysical processes.

Purpose of the Study:

  • To develop novel two-component white light-emitting systems using natural fruit and vegetable extracts.
  • To investigate the role of specific pigments (anthocyanin, β-carotene, betanin) in white light emission.
  • To analyze the energy transfer dynamics and efficiency in these natural systems.

Main Methods:

  • Development of JaB (java plum + beetroot) and CaB (carrot + beetroot) systems.
  • Utilizing resonance energy transfer (RET) between natural pigment donors and an acceptor.
  • Characterization of white light emission using CIE coordinates in solution and gel media.
  • Quantification of donor-acceptor distance and energy transfer rates.
  • Supporting mechanistic investigations with Density Functional Theory (DFT) studies.

Main Results:

  • Successful development of two white light-emitting systems, JaB and CaB, based on natural extracts.
  • Identified anthocyanin, β-carotene, and betanin as primary fluorescent pigments responsible for white light emission.
  • Achieved white light emission in both solution and agar-agar gel media with favorable CIE coordinates.
  • Determined short donor-acceptor distances (0.5 nm for JaB, 0.4 nm for CaB).
  • Quantified high rates of energy transfer (2.78 × 10^9 s^-1 for JaB, 1.02 × 10^8 s^-1 for CaB).

Conclusions:

  • Natural fruit and vegetable extracts can be effectively utilized to create efficient white light-emitting systems.
  • The resonance energy transfer (RET) phenomenon plays a critical role in achieving white light emission.
  • These bio-inspired systems offer a sustainable and promising avenue for developing next-generation lighting technologies.