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Title: | Corrole and Corrole Functionalized Silica Nanoparticles as New Metal Ion Chemosensors: A Case of Silver Satellite Nanoparticles Formation |
Author: | Santos, Carla I. M. Oliveira, Elisabete Fernandez-Lodeiro, Javier Barata, Joana F. B. Santos, Sergio M. Faustino, M. Amparo F. Cavaleiro, Jose A. S. Neves, M. Graca P. M. S. Lodeiro, Carlos |
Keywords: | FREE-BASE CORROLES SINGLET OXYGEN GENERATION PHOTOPHYSICAL PROPERTIES SELECTIVE FLUORESCENT PERIODIC-TABLE DERIVATIVES CONSTANTS BEHAVIOR MERCURY SYSTEMS |
Issue Date: | 2013 |
Publisher: | AMER CHEMICAL SOC |
Abstract: | Corrole macrocycles are very appealing dyes for incorporation into light harvesting devices. This work shows the sensorial ability of 5,10,15-tris(pentafluorophenyl)corrole 1 and its monoanionic species toward Na2+, Ca2+, Cu2+, Cd2+, Pb2+, Hg2+, Ag+, and Al3+ metal ions in toluene and acetonitrile. The photophysical studies toward metal ions were carried out by absorption and emission spectroscopy. From all metal ions studied, corrole 1 shows to be colorimetric for Hg2+ allowing a naked eye detection of Hg2+ through a change of color from purple to blue in acetonitrile and from green to yellow in toluene. In addition a new beta-imine corrole 4 was successful synthesized and further functionalized with 3-isocyanatopropyl-trimethoxysilane resulting in an alkoxysilane derivative 5. The grafting of alkoxysilane derivative 5 with optically transparent silica nanoparticles (SiNPs) was achieved succesfully. The new-coated silica nanoparticles with corrole 5 were studied in the presence of Cu2+, Hg2+ and Ag2+ as metal ion probes. Interestingly, upon addition of Ag+, groups of satellite AgNPs were formed around the SiNPs and were checked by transmission electron microscopy (TEM). At same time, a change of color from green to yellow was observed. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/21011 |
DOI: | 10.1021/ic4006295 |
ISSN: | 0020-1669 |
Publisher Version: | 10.1021/ic4006295 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Corrole and Corrole Functionalized Silica Nanoparticles as New Metal Ion Chemosensors A Case of Silver Satellite Nanoparticles Formation_10.1021ic4006295.pdf | 4.05 MB | Adobe PDF |
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