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<p>Spectroscopic and morphological investigation of (part 1) electrospherization of DNA nanospheres using electrosynthesis method under different applied perturbation voltages (2.5, 5, and 10&#xa0;V), DNA concentration (0.1 and 0.4&#xa0;wt%), denaturing agent NaCl concentration (0.04, 0.2, 0.4, and 0.6&#xa0;wt%), and electrosynthesis time (Es time) and (part 2) electrosynthesis of copper nanoparticles (CuNPs) within DNA electrolytic solution. The results revealed that DNA nanospheres successfully prepared. UV–Vis analysis explored formation of new emerged peak its absorption intensity and position drastically dependent on the studied parameters. As the applied voltage, Es time, denaturing agent, and DNA concentration increase, the absorption intensity of the emerged clearly increased which considered as good evidence on the DNA nanospheres formation. Also, TEM images revealed the formation of the DNA nanospheres. Furthermore, the prepared solutions have a good stability against aging. On the other hand, results introduced that CuNPs were successfully prepared. Under the electrosynthesis condition, UV–Vis measurements conducted the formation of two peaks at 300&#xa0;nm (CuNPs) and at 700&#xa0;nm (DNA-Cu complex). After reduction using ascorbic acid, DNA-Cu complex peak was clearly vanished, and intensity of CuNPs peak was red-shifted with increasing in absorption intensity. TEM revealed the formation of CuNPs with bimodal size distribution 3.6 and 6.6&#xa0;nm. In addition, the presence of the CuNPs within the DNA matrix causes a decrease in the optical band gap energy and Urbach energy with no change in the refractive index value.</p> Graphical abstract <p></p>

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Unraveling the impact of some parameters on the DNA electrospherization and the formation of CuNPs within DNA matrix for potential optoelectronic applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月3日

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  • Maha A. Abed,
  • Mostafa M. Zidan,
  • Aya A. Elsherbeny,
  • Mohamed M. Mansour-Gabr,
  • Ayman S. Elmezayyen

摘要

Spectroscopic and morphological investigation of (part 1) electrospherization of DNA nanospheres using electrosynthesis method under different applied perturbation voltages (2.5, 5, and 10 V), DNA concentration (0.1 and 0.4 wt%), denaturing agent NaCl concentration (0.04, 0.2, 0.4, and 0.6 wt%), and electrosynthesis time (Es time) and (part 2) electrosynthesis of copper nanoparticles (CuNPs) within DNA electrolytic solution. The results revealed that DNA nanospheres successfully prepared. UV–Vis analysis explored formation of new emerged peak its absorption intensity and position drastically dependent on the studied parameters. As the applied voltage, Es time, denaturing agent, and DNA concentration increase, the absorption intensity of the emerged clearly increased which considered as good evidence on the DNA nanospheres formation. Also, TEM images revealed the formation of the DNA nanospheres. Furthermore, the prepared solutions have a good stability against aging. On the other hand, results introduced that CuNPs were successfully prepared. Under the electrosynthesis condition, UV–Vis measurements conducted the formation of two peaks at 300 nm (CuNPs) and at 700 nm (DNA-Cu complex). After reduction using ascorbic acid, DNA-Cu complex peak was clearly vanished, and intensity of CuNPs peak was red-shifted with increasing in absorption intensity. TEM revealed the formation of CuNPs with bimodal size distribution 3.6 and 6.6 nm. In addition, the presence of the CuNPs within the DNA matrix causes a decrease in the optical band gap energy and Urbach energy with no change in the refractive index value.

Graphical abstract