An active structure preservation method for developing functional graphitic carbon dots as an effective antibacterial
1Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Science, Southwest University, Chongqing 400715, China. liuhui78@swu.edu.cn chengzhi@swu.edu.cn.
Nanoscale
|November 3, 2017
Summary
We developed a new method to create self-functional graphitic carbon dots (g-CDs) using an antibiotic. These engineered g-CDs show antibacterial activity, pH sensing, and enhanced photoluminescence, demonstrating a versatile approach for functional nanomaterials.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Functional engineering of nanomaterials like graphitic carbon dots (g-CDs) is essential for diverse applications.
- Developing novel g-CDs with inherent functionalities requires innovative synthesis strategies.
Purpose of the Study:
- To introduce a facile Active Structure Preservation (ASP) method for synthesizing self-functional g-CDs.
- To demonstrate the ASP method using ciprofloxacin hydrochloride as a precursor.
- To explore the properties and potential applications of the synthesized g-CDs.
Main Methods:
- Hydrothermal synthesis route with controlled reaction temperature below reactant decomposition.
- Utilizing ciprofloxacin hydrochloride as a starting material to preserve functional groups.
- Characterization using mass spectrometry (MS) to confirm surface structures.
Main Results:
- Successfully synthesized g-CDs with ciprofloxacin-like surface structures.
- Demonstrated antibacterial activity against Staphylococcus aureus and Escherichia coli.
- Showcased optical pH sensing capabilities within a range of 5.02 to 9.91.
- Observed a chelation-enhanced photoluminescence (CHEP) effect with aluminum ions.
Conclusions:
- The Active Structure Preservation (ASP) method is effective for engineering functional graphitic carbon dots.
- The synthesized g-CDs possess multiple functionalities including antibacterial, pH sensing, and ion-responsive luminescence.
- ASP method shows promise for creating tailored CDs for various applications.
