without changing your settings we'll assume you are happy to receive all RSC cookies.
You can change your cookie settings by navigating to our Privacy and Cookies page and following the instructions. These instructions
are also obtainable from the privacy link at the bottom of any RSC page.
Two metal-free tetra(aryl)porphyrin derivatives modified by one and four N,N-bis(2-pyridylmethyl)amino group(s), namely porphyrin-1-DPA (1) and porphyrin-4-DPA (2) respectively, have been designed, synthesized, and characterized. Binding with Pb2+ induces a significant change in their solution color and in the ratio of two absorption/fluorescence signal peaks, rendering them the first example of porphyrin-based triple-signal optical sensors for Pb2+. Their dual-mode Cu2+-selective sensing properties via either the porphyrin fluorescence ON–OFF mechanism or metal displacement from the 1–Pb2+ complex that results in a triple-signal change clearly reveals their potential application as excellent and versatile sensors.
Fetching data from CrossRef. This may take some time to load.
Organic & Biomolecular Chemistry
- Information Point