Structurally modified 1, 10-phenanthroline based fluorophores for specific sensing of Ni2+ and Cu2+ ions (original) (raw)
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Review on Recent Advances in Metal Ions Sensing Using Different Fluorescent Probes
Journal of Fluorescence, 2018
Fluorescence probes serves as unique detection methods for its simplicity and low detection limit (LOD) and especially bioimaging ability. Research on the probes has already sprouted during the last decade with the help of its molecular recognition properties. This review spotlights recent progress in sensing and bioimaging biologically, environmentally and industrially important metal ions e.g. Zn 2+ , Cu 2+ , Hg 2+ , Ag + etc. using suitable fluorescent chemosensors including carbon quantum dots (CQD).
Recent progress on fluorescent chemosensors for metal ions
Inorganica Chimica Acta
The recognition and sensing of the biologically and environmentally important metal ions has emerged as a significant goal in the field of chemical sensors in recent years. Among the various analytical methods, fluorescence has been a powerful tool due to its simplicity, high detection limit and application to bioimaging. This review highlights the fluorescent chemosensors for metal ions, which have been recently developed from our laboratory. This review was categorized by target metal ions, such as Cu 2+ , Hg 2+ , Zn 2+ , Pb 2+ , Cd 2+ , Vanadate, Ag + and Au 3+ . Selectivity and sensitivity for these metal ions were achieved by introducing various ligands to core fluorophores, such as, rhodamine, fluorescein, pyrene, anthracene, naphthalimide, coumarin, and BODIPY.
Analytical Chemistry, 2008
A sensor array containing 9 cross-reactive sensing fluorescent elements with different affinity and selectivity to 10 metal cations (Ca 2+ , Mg 2+ , Cd 2+ , Hg 2+ , Co 2+ , Zn 2+ , Cu 2+ , Ni 2+ , Al 3+ , Ga 3+) is described. The discriminatory capacity of the array was tested at different ranges of pH and at different cation concentrations using linear discriminant analysis (LDA). Qualitative identification of cations can be determined with over 96% of accuracy in a concentration range covering 3 orders of a magnitude (5-5000 µM). Quantitative analysis can be achieved with over 90% accuracy in the concentration range between 10 and 5000 µM. The array performance was also tested in identification of nine different mineral water brands utilizing their various electrolyte compositions and their Ca 2+ , Mg 2+ , and Zn 2+ levels. LDA cross-validation routine shows 100% correct classification for all trials. Preliminary results suggest that similar arrays could be used in testing of the consistency of the purification and manufacturing process of purified and mineral waters.
Development of Fluorescence based Biosensor for Estimation of Heavy Metal Ions
For the first time, acid phosphatase based fluorescence biosensor has been developed for estimation of heavy metal ions. It is based on inhibition of acid phosphatase enzyme activity exerted by metal ions. Acid phosphatase entrapped A-J biocomposite membranes have been employed for the development of fluorescence biosensor. The extent of inhibition for different toxic metal ions was studied by measuring the decrease in fluorescence intensity. The results indicate that the toxicity of the various metals tested toward immobilized phosphatase is ranged as follows: Hg 2+ >Cu 2+ > Cr 2+. The storage stability of the enzyme at 40C was found to be more than two months. Generally, in inhibition based biosensor reuse of bioelement is quite difficult. In present studies regeneration of ACP membrane has been achieved successfully.
Talanta, 2011
Fluorescent sensor (DMH) based on dipeptide was efficiently synthesized in solid phase synthesis. The dipeptide sensor shows sensitive response to Ag(I), Hg(II), and Cu(II) among 14 metal ions in 100% aqueous solution. The fluorescent sensor differentiates three heavy metal ions by response type; turn on response to Ag(I), ratiometric response to Hg(II), and turn off detection of Cu(II). The detection limits of the sensor for Ag(I) and Cu(II) were much lower than the EPA's drinking water maximum contaminant levels (MCL). Specially, DMH penetrated live cells and detected intracellular Ag + by turn on response. We described the fluorescent change, binding affinity, detection limit for the metal ions. The study of a heavy metalresponsive sensor based on dipeptide demonstrates its potential utility in the environment field.
Data on a real-time tripodal colorimetric/fluorescence sensor for multiple target metal ions
Data in Brief
Currently considerable research both in life and in environmental sciences is dedicated to chemosensors able to detect metals of biological interest such as zinc and iron or other toxic and carcinogenic, as cadmium, mercury, chromium, lead. Recently, a new chemosensor strategy of "single chemosensor for multiple metals" has emerged. For this scope, many fluorescent sensors for Cd(II) and Zn(II) have been designed and synthetized, as ligand systems or in polymeric matrices [1-3]. The data presented in this article include experimental data on the of a pyridyl/phenolic/benzothiazole functionalized colorimetric receptor (BPAP) and its selectively recognise Fe(III) and Fe(II) ions with visible, naked eye colour changes and fluorometric selectivity towards Zn 2 þ and Cd 2 þ ions in aqueous medium. This article is submitted as a companion paper to Caruso et al. (2018) [4].
Recognition elements for metal ions as parts of optical chemical sensors
2005
This paper focuses on chromoionophores and fluoroionophores immobilized or covalently attached in/on a matrix or support, respectively. Silica xerogel serves as the matrix and amino-modified silicate or mesoporous silicate (MCM-48) as the support. The studied materials prepared by sol-gel procedure can be treated as potential recognition elements for optical chemical sensors. Action of the recognition elements is based on absorption spectra changes or template effect for the chromoionophores and photoinduced electron transfer (PET) effect in the case of the fluoroionophores.