N-doped carbon dots under Xenon lamp irradiation: Fluorescence red-shift and its potential mechanism
N-doped carbon dots under Xenon lamp irradiation: Fluorescence red-shift and its potential mechanism
复制标题
氙灯照射下的氮掺杂碳点：荧光红移及其潜在机制
DOI：
10.1016/j.saa.2019.03.020
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Liang Jiangong
中科院分区：
文献类型：
--
作者：
Hu Hongwei;Tian Xinmeng;Gong Yixuan;Ren Guolan;Liang Jiangong
尽管对碳点的研究非常广泛，但对其光稳定性的研究却很少。本文系统研究了3-氨基苯甲酸合成的CDs在不同pH条件下（5.0、7.4和9.0）的光稳定性。结果表明：在氙灯照射下，CDs的荧光强度呈现先上升后下降的趋势，最大发射波长逐渐向更长的波长移动；进一步的研究表明，辐照引起CD表面官能团的变化并引起聚集，从而形成更大的颗粒。该研究对研究CDs的性质具有重要的参考价值。
Despite extensive research on carbon dots (CDs), rare studies have been performed on the photostability of CDs. Here, the photostability of CDs synthesized with 3-aminobenzoic acid were systematically investigated under different pH conditions (5.0, 7.4 and 9.0). The results showed that under Xenon lamp irradiation, the fluorescence (FL) intensity of the CDs exhibited an increase first and then a decrease, with a gradual shift of the maximum emission wavelength to longer wavelength. Further investigation indicated that the irradiation induced the change of the CD surface functional groups and gave rise to aggregation, resulting in the formation of larger particles. This study provided important reference value towards research on CDs properties.