期刊
JOURNAL OF FLUORESCENCE
卷 30, 期 6, 页码 1337-1344出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-020-02607-x
关键词
Static quenching; Dynamic quenching; Anions; Fluorescence lifetime
The present work is an attempt to investigate the heavy atom effect imparted by halide ions, especially iodide (I-) ions on the fluorescence behavior of carbon dots (CDs). Here two different types of CDs viz. nitrogen doped carbon dots (NCDs) from Citric Acid (CA) & Urea and Sulfur and nitrogen co-doped carbon dots (S,N-CDs) from CA & L-Cysteine were synthesized and the fluorescence of both CDs were quenched by heavy atom effect on adding potassium iodide (KI). The large difference in average lifetime was obtained in time-correlated single-photon counting (TCSPC) analysis suggests the dynamic quenching and heavy atom effect.
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