Corrole and Corrole Functionalized Silica Nanoparticles as New Metal Ion Chemosensors: A Case of Silver Satellite Nanoparticles Formation
authors Santos, CIM; Oliveira, E; Fernandez-Lodeiro, J; Barata, JFB; Santos, SM; Faustino, MAF; Cavaleiro, JAS; Neves, MGPMS; Lodeiro, C
nationality International
journal INORGANIC CHEMISTRY
keywords FREE-BASE CORROLES; SINGLET OXYGEN GENERATION; PHOTOPHYSICAL PROPERTIES; SELECTIVE FLUORESCENT; PERIODIC-TABLE; DERIVATIVES; CONSTANTS; BEHAVIOR; MERCURY; SYSTEMS
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.
publisher AMER CHEMICAL SOC
issn 0020-1669
year published 2013
volume 52
issue 15
beginning page 8564
ending page 8572
digital object identifier (doi) 10.1021/ic4006295
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000322863300037
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journal analysis (jcr 2019):
journal impact factor 4.825
5 year journal impact factor 4.501
category normalized journal impact factor percentile 92.222
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