Kafeel Ahmad
Indian Institute of Technology Guwahati
5 Papers
Kafeel Ahmad is an academic researcher from Indian Institute of Technology Guwahati. The author has contributed to research in topics: Color temperature & Electron transfer. The author has an hindex of 5, co-authored 5 publications.
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Papers
Role of surface charge in enhancing antibacterial activity of fluorescent carbon dots.
Arushi Verma,Farwa Arshad,Kafeel Ahmad,Upashi Goswami,Sintu Kumar Samanta,Amaresh Kumar Sahoo,Palashuddin Sk +6 more
TL;DR: Herein, different surface charged Carbon dots (Cdots) were synthesized by using diethylene glycol as a carbon source with various amine containing surface passivating agents, that results in almost similar sized positive, negative and uncharged fluorescent Cdots which has been confirmed by zeta potential analysis in this case.
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Phosphorus induced crystallinity in carbon dots for solar light assisted seawater desalination
TL;DR: In this paper, a facile method for the synthesis of highly crystalline doped Cdots of an average size of 28 ± 08 nm, that contain nitrogen, sulphur and phosphorus heteroatoms (N,S,P-Cdots) was reported.
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Boron Doped Carbon Dots with Unusually High Photoluminescence Quantum Yield for Ratiometric Intracellular pH Sensing
TL;DR: The observed luminescence efficiencies as obtained from steady state and time-resolved photoluminescence measurements suggest an alternative emission mechanism due to boron/phosphorus doping in carbon dots that could be used for ratiometric intracellular pH sensing in cancer cell lines.
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Synthesis of single-particle level white-light-emitting carbon dots via a one-step microwave method
TL;DR: In this paper, a simple yet environmentally friendly and cost effective preparation method of white light emitting carbon dots (Cdots) is reported, where as-synthesized Cdots exhibit emission spectrum covering the entire visible region with color coordinates close to that of pure white light with high color rendering index (84−89) and variable correlated color temperature (5593−7490 K).
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An Interactive Quantum Dot and Carbon Dot Conjugate for pH-Sensitive and Ratiometric Cu2+ Sensing
TL;DR: Steady-state and time-resolved photoluminescence studies revealed that interacting particle conjugates were responsible for the electron transfer and could be used to detect the presence of Cu2+ ions, which preferentially, ratiometrically, and efficiently quenched the luminescence of the Qdots.
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