Journal of Fluorescence ( IF 2.6 ) Pub Date : 2020-08-18 , DOI: 10.1007/s10895-020-02607-x A O Aswathy 1 , S Madanan Anju 1 , J Jayakrishna 1 , N S Vijila 1 , J S Anjali Devi 1 , B Anjitha 1 , Sony George 1
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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.
中文翻译：
研究重原子对碳点荧光的影响：NCD和S，N-CD。
目前的工作是调查由卤离子赋予，重原子效应的尝试特别是碘化物（I - ）离子在碳上的点（CDS）的荧光行为。这里有两种不同类型的CD。合成了柠檬酸（CA）和尿素的氮掺杂碳点（NCD）和CA和L半胱氨酸的硫和氮共掺杂的碳点（S，N-CDs），并且两个CD的荧光都被重原子淬灭了添加碘化钾（KI）的效果。在时间相关的单光子计数（TCSPC）分析中获得了平均寿命的巨大差异，表明动态淬灭和重原子效应。
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