A facile synthesis of self-doped carbon dots from 2-aminoterephthalic acid and their applications. (September 2019)

• Record Type: Journal Article
• Authors: Tu, Yufei; Li, Guoqiang; Wang, Xuan; Wang, Shiqi; Cheng, Shijie; Zuo, Danying; Xu, Jing; Zhang, Hongwei
• Is Part Of: Materials today communications. Volume 20(2019)
• Publication Date: 2019-09
• Subjects: 2-Aminoterephthalic acid -- Hydrothermal carbonization -- Carbon dot -- Fluorescence -- UV protection; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2019.100599
• Languages: English
• ISSNs: 2352-4928

Abstract

Graphical abstract: Highlights: Self-doped carbon dots are successfully prepared from a new raw precursor. Such carbon dots display wavelength-independent fluorescence. Such carbon dots exhibit highly sensitive response to Fe 3+ ions. Such carbon dots have good UV protection for cotton fabrics. Abstract: Self-doped carbon dots with N elements (N-CDs) are successfully prepared through one-pot hydrothermal carbonization strategy by using 2-aminoterephthalic acid as a new precursor. The as-prepared N-CDs show a size of 5–10 nm and display wavelength-independent fluorescence. Their maximum excitation and emission wavelength are 340 and 423 nm, respectively. They demonstrate a highly selective and sensitive detection of Fe 3+ ions in the range of 5–100 μM via an effective fluorescence quenching mechanism. Furthermore, the cotton fabrics treated by these N-CDs have excellent ultraviolet (UV)-protective property. Therefore, they have potential to be used for the detection of Fe 3+ ions, the UV fluorescent ink and the UV protection for cotton fabrics.