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<p>This research presents a straightforward approach to synthesizing advanced nanomaterials derived from the herb <i>Borreria Hispida</i>, focusing on their use in environmental and biological applications. Utilizing a simple hydrothermal process, nitrogen-doped carbon dots were produced from <i>Borreria Hispida</i> and ortho-phenylenediamine. Various analytical techniques such as XRD, TEM, FTIR, CHNS, UV-Vis, and photoluminescence spectroscopy were employed to characterize the carbon dots. The synthesized nanomaterials displayed exceptional water solubility and robust UV light stability, coupled with a high quantum yield of 9%. With particle sizes ranging from 0.5 to 3.5&#xa0;nm, the carbon dots demonstrated superior sensitivity and selectivity in detecting VO<sup>2+</sup> ions through a fluorometric sensing mechanism, achieving a detection limit as low as 0.25 µM. The sensing mechanism was based on a binding model where two nitrogen atoms from the carbon dots interact with a single VO<sup>2+</sup> ion in a 2:1 ratio. Additionally, cytotoxicity tests revealed that the N-CDs significantly inhibited the growth of MCF7 breast cancer cells, with cell viability reaching a maximum of 92%. This research highlights the versatility of N-CDs in both environmental monitoring and biomedical fields.</p>

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Nitrogen-Doped Carbon Dots from Borreria Hispida: For Fluorometric Sensing of VO2+ Ions and Live Cell Imaging Applications

  • 期刊论文

  • 发表日期：

    2025年5月6日

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  • S. Shanmuga Priya,
  • SR. Suseem

摘要

This research presents a straightforward approach to synthesizing advanced nanomaterials derived from the herb Borreria Hispida, focusing on their use in environmental and biological applications. Utilizing a simple hydrothermal process, nitrogen-doped carbon dots were produced from Borreria Hispida and ortho-phenylenediamine. Various analytical techniques such as XRD, TEM, FTIR, CHNS, UV-Vis, and photoluminescence spectroscopy were employed to characterize the carbon dots. The synthesized nanomaterials displayed exceptional water solubility and robust UV light stability, coupled with a high quantum yield of 9%. With particle sizes ranging from 0.5 to 3.5 nm, the carbon dots demonstrated superior sensitivity and selectivity in detecting VO2+ ions through a fluorometric sensing mechanism, achieving a detection limit as low as 0.25 µM. The sensing mechanism was based on a binding model where two nitrogen atoms from the carbon dots interact with a single VO2+ ion in a 2:1 ratio. Additionally, cytotoxicity tests revealed that the N-CDs significantly inhibited the growth of MCF7 breast cancer cells, with cell viability reaching a maximum of 92%. This research highlights the versatility of N-CDs in both environmental monitoring and biomedical fields.