Understanding the Selectivity of a Multichannel Fluorescent Probe for Peroxynitrite Over Hypochlorite
作者:Quanjuan Zhang、Na Zhang、Yi-Tao Long、Xuhong Qian、Youjun Yang
DOI:10.1021/acs.bioconjchem.5b00396
日期:2016.2.17
Peroxynitrite is a prominent biological reactive nitrogen species from radical combination of nitric oxide and superoxide and fundamentally involved in broad spectrum physiological and pathological processes. Though redox-inert itself, peroxynitrite anion (OONO–) attacks various biological electrophiles to generate an array of potent 2-e– or 1-e– oxidants, which result in cell injuries. Development of fluorescent probes for peroxynitrite, free from interference from hypochlorite, has been an active endeavor of the chemical community. We previously reported a peroxynitrite probe (PN600), which could differentiate hypochlorite from peroxynitrite through a multichannel signaling mechanism. Herein, this intriguing selectivity was accounted for through a structure–reactivity relationship study. Also, this work, together with rich literature contributions, has allowed a qualitative guideline in the use of electron-rich aromatic moieties to design probes against peroxynitrite and/or hypochlorite. The viability of this guideline was further testified by development of another list of peroxynitrite selective probes.
RGB color-tunable electrofluorochromic devices with a turn-on mode were fabricated successfully and applied for the first time in encrypted information storage and display.
成功制备了具有开启模式的RGB可调色电致发光设备,并首次应用于加密信息存储与显示。
A simple yet effective fluorescent probe for detecting and imaging mercury ions in cells