3 years ago

A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu(2+) Based on a Guanidine Derivative.

Fei Ye, Ming-Qiang Li, Qiong Chai, Xiao-Min Liang, Ying Fu, Zhi-Qiang Wang
A new highly selective and sensitive fluorescent probe for Cu(2+), N-n-butyl-4-(1'-cyclooctene-1',3',6'-triazole)-1,8-naphthalimide (L), was synthesized and evaluated. The structure of compound L was characterized via IR, ¹H-NMR, (13)C-NMR and HRMS. The fluorescent probe was quenched by Cu(2+) with a 1:1 binding ratio and behaved as a "turn-off" sensor. An efficient and sensitive spectrofluorometric method was developed for detecting and estimating trace levels of Cu(2+) in EtOH/H₂O. The ligand exhibited excitation and emission maxima at 447 and 518 nm, respectively. The equilibrium binding constant of the ligand with Cu(2+) was 1.57 × 10⁴ M(-1), as calculated using the Stern.

Publisher URL: http://doi.org/10.3390/molecules22101741

DOI: 10.3390/molecules22101741

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.