Synthesis of 2D fluorescent polyaniline derivatives as multifunctional fluorescent chemosensor. Issue 3 (10th October 2022)

• Record Type: Journal Article
• Authors: Lu, Qingyi; Qian, Junning; Xu, Feng; He, Guohang; Liu, Yuwen; Xia, Jiangbin
• Is Part Of: Journal of polymer science. Volume 61:Issue 3(2023)
• Page Start: 211
• Page End: 222
• Publication Date: 2022-10-10
• Subjects: 2D materials -- Cu2+ detection -- Fe3+ -- fluorescent chemosensors -- polyaniline derivatives; Polymers -- Periodicals; Polymerization -- Periodicals; Polymerization; Polymers; Periodicals; 547.7
• DOI: 10.1002/pol.20220503
• Languages: English
• ISSNs: 2642-4150

Abstract

Abstract: Polyaniline (PANI) has been widely studied and applied due to its easy‐to‐obtain raw materials, excellent electrochemical performance and high environmental stability. Here, we present a general synthetic strategy for preparing two‐dimensional (2D) fluorescent PANI derivatives. The double bonds are used as a conjugated spacer between benzene rings in PPED and PPBA. The work breaks through the limitation of PANI derivatives are non‐emissive in solutions. The fluorescence quantum yields (Фf ) of PPED and PPBA are 2.5% and 1.5%, respectively. PPED and PPBA show highly selective and sensitive detection of iron ion (Fe 3+ ), copper ion (Cu 2+ ) and hydrochloric acid (HCl). It is worth noting that the detection limit of PPED for Fe 3+ is 35 nM. In addition, the theoretical study indicates that the introduction of double bonds in PPED and PPBA greatly enhances their conjugation extent. The results demonstrate that we provide a powerful method for the preparation of highly sensitive fluorescent chemosensors based on 2D PANI derivatives. Abstract :