A peroxide-based conjugated triazine framework as a luminescent probe for p-nitroaniline and Fe3+ detection. (19th April 2022)

• Record Type: Journal Article
• Authors: Wu, Ni; Jia, Ruiqiang; Hong, Haitao; Gao, Hanyue; Guo, Zhiyong; Zhan, Hongbing; Du, Shaowu; Chen, Banglin
• Is Part Of: Polymer. Volume 246(2022)
• Publication Date: 2022-04-19
• Subjects: Anthracene-based CTF -- Peroxidation -- p-nitroaniline -- Fe3+ ions -- Luminescence quenching; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.124752
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Nitro aromatics and heavy metal ions especially Fe 3+ ions in aqueous solution are growing detrimental to human beings and biological diversity with industrial processes. Owing to the high porosity, good chemical/thermal stability and well tunability, luminescent covalent triazine frameworks (CTFs) have become an ideal platform for chemical sensing of these hazard molecules/ions. In this study, an previous reported anthracene-based CTF was post-modified by trapping 1 O2 to form its endoperoxide derivative (EPO-CTF). Intriguingly, after post-peroxide, the luminescent CTF displayed much difference in sensing behaviors toward nitroaromatic compounds (NACs) and metal ions as compared to the pristine CTF. Based on the experimental and calculation studies, we further investigated the underneath mechanism behind the differences of the sensing ability. Graphical abstract: An anthracene-based CTF could trap 1 O2 to form its endoperoxide derivative (EPO-CTF). The luminescence intensity of peroxide functionalized CTF exhibited high selectivity and sensitivity towards p-nitroaniline (p-NA) and Fe 3+ ions. Image 1 Highlights: An endoperoxide-based CTF termed EPO-CTF was synthesized by trapping 1 O2 to oxidize the anthracene-based linkage. The peroxide derivative displayed high porosity, good chemical stability and impressive luminescence properties. EPO-CTF displayed much difference in sensing behaviors toward NACs and metal ions compared to the pristine CTF. EPO-CTF showed better sensitivity to p-NA compared to DPA-CTF due to the more effective RET process.