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Pineapple Peel-Derived Carbon Dots: Applications as Sensor, Molecular Keypad Lock, and Memory Device
Somasundaram Anbu Anjugam Vandarkuzhali1, Sampathkumar Natarajan2, Shanmugapriya Jeyabalan3
1National Centre for Catalysis Research, Indian Institute of Technology Madras, Chennai 600036, India.
ACS Omega
|November 10, 2018
Summary
Blue-emitting fluorescent carbon dots (CDs) from pineapple peel detect mercury ions (Hg2+) and l-cysteine. This enables water quality testing and development of logic gates for electronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Analytical Chemistry
Background:
- Fluorescent carbon dots (CDs) offer unique optical properties for sensing applications.
- Developing sustainable and cost-effective methods for CD synthesis is crucial.
- Metal ion detection and bio-imaging require probes with high sensitivity and low toxicity.
Purpose of the Study:
- To synthesize blue-emitting fluorescent carbon dots (CDs) from pineapple peel using a hydrothermal method.
- To investigate the sensing capabilities of CDs for mercury ions (Hg2+) and l-cysteine.
- To explore the application of CDs in developing logic gates and electronic security devices.
Main Methods:
- Hydrothermal treatment of pineapple peel to synthesize carbon dots.
- Fluorescence spectroscopy to study the interaction of CDs with Hg2+ and l-cysteine.
- Cell imaging assays to evaluate biocompatibility and cytotoxicity.
- Design and implementation of NOT and IMP logic gates using CDs as probes.
Main Results:
- Successfully synthesized blue-emitting fluorescent carbon dots (CDs) from pineapple peel.
- Observed turn-Off fluorescence response to Hg2+ and subsequent turn-On response to l-cysteine.
- Demonstrated negligible cytotoxicity and enhanced biocompatibility for cell imaging.
- Quantified Hg2+ in water samples and designed elementary logic gates (NOT, IMP).
Conclusions:
- Pineapple peel-derived CDs are effective fluorescent probes for detecting Hg2+ and l-cysteine.
- The developed sensing system shows potential for water quality monitoring and bio-imaging.
- CD-based logic gates offer a novel approach for electronic security and memory applications.
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