A novel dual-mode turn-on optional chemodosimeter for the visualization of Pd-0 with a low detection limit

作者:Liu, Mengmeng; Leng, Taohua; Wang, Kai; Shen, Yongjia; Wang, Chengyun*
来源:Journal of Photochemistry and Photobiology A: Chemistry , 2017, 337: 25-32.
DOI:10.1016/j.jphotochem.2017.01.007

摘要

Rhodol is an ideal platform for fluorescent probes owing to its spirolactone framework and excellent photochemical properties. Herein, a novel rhodol-based colorimetric and fluorescent turn-on probe, DER-1, for the detection of Pd, was rationally developed with an allyl carbamate group as the response unit. Base on the Pd-triggered cleavage reaction and rhodol spiroring-opening mechanism, the proposed probe exhibited a high selectivity and sensitivity towards Pd-0 Upon addition of Pd(PPh3)(4), a significant fluorescence enhancement at 547 nm was observed with an obvious color change from colorless to pink, which can be easily identified by naked-eye. In addition, the fluorescence intensity at 547 nm was linearly proportional to the concentration of Pd-0 in the range of 0-1.5 mu M, and the detection limit was calculated to be 1.14 nM. That is, probe DER-1 can be quite a sensitive fluorescent turn-on probe for the quantitative detection of Pd in pretty low dose.

  • 出版日期2017-3-15
  • 单位华东理工大学; 上海市质量监督检验技术研究院