A perylene monoimide probe based fluorescent micelle sensor for the selective and sensitive detection of picric acid. Issue 44 (26th October 2020)

• Record Type: Journal Article
• Authors: Li, Weiqing; Zhou, Huipeng; Hayat Nawaz, Muhammad Azhar; Niu, Niu; Yang, Na; Ren, Jia; Yu, Cong
• Is Part Of: Analytical methods. Volume 12:Issue 44(2020)
• Page Start: 5353
• Page End: 5359
• Publication Date: 2020-10-26
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/d0ay01456g
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A PMI-OH @Triton X-100 micelle sensor based on the perylene probe excimer fluorescence emission quenching mechanism has been developed for the detection of picric acid (PA ). Abstract : A hydroxyl functionalized perylene monoimide probe (PMI-OH ) was prepared and self-assembled with the nonionic surfactant Triton X-100 (TX100 ) to fabricate a fluorescent micelle sensor for the selective and sensitive detection of picric acid (PA ), a common explosive and environmental pollutant. The synthesized PMI-OH probe exhibited excimer fluorescence emission, and the intensity of the excimer fluorescence emission was significantly enhanced after the PMI-OH probe formed micelles with TX100 . The obtained PMI-OH @TX100 micelles presented excellent photoluminescence properties and had a maximum fluorescence emission at 630 nm. The red fluorescence of the PMI-OH @TX100 micelles was quenched upon introduction of the nitro explosive PA due to electron transfer from the donor (PMI-OH ) to the acceptor (PA ). The fluorescence quenching of the fluorescent micelle sensor was proportional to the concentration of PA in the range of 2 to 10 μM. The limit of detection was 500 nM using 3 σ / k . Thus, the developed PMI-OH @TX100 micelle sensor has great potential to detect PA in ordinary samples.