Published October 16, 2025 | Version v2
Preprint Open

Aqueous synthesis of Dihydrolipoic Acid-Capped Copper Indium Sulphide Quantum Dots

Authors/Creators

  • 1. ROR icon Alexandria University
  • 2. ROR icon South Ural State University
  • 3. ROR icon City of Scientific Research and Technological Applications

Description

This dataset contains the experimental data supporting the research article titled “Aqueous synthesis of Dihydrolipoic Acid-Capped Copper Indium Sulphide Quantum Dots”.
The dataset includes raw and processed data obtained during the synthesis and characterization of DHLA-capped CIS QDs. It covers X-ray diffraction (XRD) patterns, Fourier transform infrared (FTIR) spectra, UV–visible and photoluminescence (PL) spectra, and high-resolution transmission electron microscopy (HRTEM) images. Additionally, it provides optical sensing data for urea detection, including calibration curves, emission intensity measurements, and calculation of sensitivity, correlation coefficient, and limit of detection.
All data were generated experimentally using aqueous synthesis methods without ligand exchange. The dataset is provided to support reproducibility and further research on DHLA-capped CIS quantum dots and their optical biosensing applications.

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Dates

Created
2025-10-05
This is a preprint version. Abstract A novel and facile aqueous synthesis, and application of dihydrolipoic acid (DHLA)-capped copper indium sulfide (CIS) QDs with no need for ligand exchange has been achieved. The influence of different experimental parameters on the growth of DHLA-capped CIS QDs, including the excitation wavelengths, Copper: Indium precursor molar ratios, CIS precursors-to-ligand molar ratios, time of reaction, and the pH medium have been investigated. Structural, optical and morphological properties of DHLA-capped CIS QDs have been investigated by Fourier transformer infrared (FTIR), X-ray diffraction (XRD), UV-visible, photoluminescence spectroscopies, and high-resolution transmission electron microscopy (HRTEM), respectively. A high photoluminescence peak of DHLA-capped CIS QDs at 580 nm with an excitation wavelength 350 nm with spherical shape crystal with average diameter sizes of 2.5- 5.0 nm was obtained. The fluorescent DHLA-capped CIS QDs developed a highly sensitive and selective for urea optical biosensor based on the luminescent enhancing in the range from 0.5 to 5 mM with an excellent correlation coefficient (R2) of 0.9866, sensitivity of 0.0562 mM-1 and limit of detection (LOD) of 0.75 mM.