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http://hdl.handle.net/10773/19344
Title: | Synthesis, Spectroscopy Studies, and Theoretical Calculations of New Fluorescent Probes Based on Pyrazole Containing Porphyrins for Zn(II), Cd(II), and Hg(II) Optical Detection |
Author: | Moura, Nuno M. M. Nunez, Cristina Santos, Sergio M. Faustino, M. Amparo F. Cavaleiro, Jose A. S. Neves, M. Graca P. M. S. Capelo, Jose Luis Lodeiro, Carlos |
Keywords: | ION CHEMOSENSORS SENSOR MERCURY CU2+ DERIVATIVES LUMINESCENCE RECOGNITION COMPLEXES PLATFORM |
Issue Date: | 2014 |
Publisher: | AMER CHEMICAL SOC |
Abstract: | New pyrazole porphyrin conjugates were successfully prepared from a reaction of beta-porphyrin chalcone derivatives with phenylhydrazine in acetic acid followed by an oxidative step. This fast and efficient synthetic approach provided the expected compounds in yields up to 82%. The sensing ability of the new porphyrin-pyrazole derivatives to detect the metal ions Ag+, Na+, K+, Mg2+, Ca2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+, Pb2+, and Cr3+ was studied by spectrophotometric and spectrofluorimetric titrations. In the presence of Zn2+, the conjugates exhibit changes in the emission spectra that are desired for a ratiometric-type fluoroionophoric detection probe. The studies were extended to gas phase, where the pyrazole porphyrin conjugates show ability to sense metal ions with high selectivity toward Cu2+ and Ag+, and in poly(methyl methacrylate) doped films with promising results for Zn2+ detection. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19344 |
DOI: | 10.1021/ic500634y |
ISSN: | 0020-1669 |
Publisher Version: | 10.1021/ic500634y |
Appears in Collections: | CICECO - Artigos |
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