A fluorescent chemosensor for cobalt ions based on a multi-substituted phenol-ruthenium(II) tris(bipyridine) complex

Li, Chunyan; Zhang, Xiaobing; Jin, Zhen; Han, Rui; Shen, Guo‐Li; Yu, Ru‐Qin

doi:10.1016/j.aca.2006.07.054

Cited by 58 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even though fluorescent and chemiluminescent sensors based on various chelating agents have been reported for Co 2+ , 312–316 Cu 2+ , 317–335 Fe 2+ , 336–338 and Fe 3+ , 339–342 many of them are based on quenching of fluorescence due to the paramagnetic metal ions’ intrinsic fluorescence quenching properties, which is generally undesirable for analytical purposes because of the small dynamic range and potential false positives caused by non-specific quenching in real samples. Other problems with current sensors include the requirement for oxidizing reagents such as hydrogen peroxide, and poor selectivity.…”

Section: Summary and Perspectivementioning

confidence: 99%

DNA as Sensors and Imaging Agents for Metal Ions

Xiang

Lu²

2013

Inorg. Chem.

142

104

View full text Add to dashboard Cite

Increasing interests in detecting metal ions in many chemical and biomedical fields have created demands for developing sensors and imaging agents for metal ions with high sensitivity and selectivity. This review covers recent progress in DNA-based sensors and imaging agents for metal ions. Through both combinatorial selection and rational design, a number of metal ion-dependent DNAzymes and metal ion-binding DNA structures that can selectively recognize specific metal ions have been obtained. By attaching these DNA molecules with signal reporters such as fluorophores, chromophores, electrochemical tags, and Raman tags, a number of DNA-based sensors for both diamagnetic and paramagnetic metal ions have been developed for fluorescent, colorimetric, electrochemical, and surface Raman detections. These sensors are highly sensitive (with detection limit down to 11 ppt) and selective (with selectivity up to millions-fold) toward specific metal ions. In addition, through further development to simplify the operation, such as the use of “dipstick tests”, portable fluorometers, computer-readable discs, and widely available glucose meters, these sensors have been applied for on-site and real-time environmental monitoring and point-of-care medical diagnostics. The use of these sensors for in situ cellular imaging has also been reported. The generality of the combinatorial selection to obtain DNAzymes for almost any metal ion in any oxidation state, and the ease of modification of the DNA with different signal reporters make DNA an emerging and promising class of molecules for metal ion sensing and imaging in many fields of applications.

show abstract

Section: Summary and Perspectivementioning

confidence: 99%

DNA as Sensors and Imaging Agents for Metal Ions

Xiang

Lu²

2013

Inorg. Chem.

142

104

View full text Add to dashboard Cite

show abstract

“…[1][2][3] Apart from its biological role, exposure to high levels of cobalt ions causes severe effects on human beings and animals. [1][2][3] Apart from its biological role, exposure to high levels of cobalt ions causes severe effects on human beings and animals.…”

Section: Introductionmentioning

confidence: 99%

“…(a) UV-vis absorption (512 nm) of the Co 2+ -2·1 complex at different pH values(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12). (b) The color changes of 1 and the Co 2+ -2·1 complex at different pH values(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12).…”

mentioning

confidence: 99%

A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment

et al. 2015

View full text Add to dashboard Cite

A new multifunctional and highly selective chemosensor for Co(2+) and Cu(2+) was designed and synthesized. could simultaneously detect both Co(2+) and Cu(2+) by changing its color from pale yellow to pink and to orange in a near-perfect aqueous solution. The binding modes of to Co(2+) and Cu(2+) were determined to be a 2 : 1 complexation stoichiometry through Job's plot, ESI-mass spectrometry analysis and (1)H NMR titration. The detection limits (1.5 and 2.1 μM) of for Co(2+) and Cu(2+) were lower than the DEP guidelines (1.7 μM for Co(2+)) and the WHO guidelines (31.5 μM for Cu(2+)) for drinking water. The chemosensor could be used to quantify Co(2+) and Cu(2+) in water samples. Moreover, could be used as a practical, visible colorimetric test kit for both Co(2+) and Cu(2+). The sensing mechanisms of Co(2+) and Cu(2+) by were supported by theoretical calculations.

show abstract

“…Polypyridine-Ru(II) complexes are interesting chromophores. The assembly of oligopyridyl groups around Ru(II) center yields mono-or polymetallic complex ions that have been studied extensively for their potential ability as fluorescent chemodetectors [41][42][43] and energy or electron transformers [44][45][46][47]. Furthermore, these Ru(II)-metallo complexes, in some cases, have demonstrated good photophysical and colorimetric sensing properties.…”

Section: Introductionmentioning

confidence: 99%

A Selective Chemosensor for Mercuric Ions Based on 4-Aminothiophenol-Ruthenium(II) Bis(bipyridine) Complex

Hamid

Al-Khateeb

Tahat

et al. 2011

International Journal of Inorganic Chemistry

View full text Add to dashboard Cite

A new ruthenium(II) complex (cis-ruthenium-bis[2,2 -bipyridine]-bis[4-aminothiophenol]-bis[hexafluorophosphate]) has been synthesized and characterized using standard analytical and spectroscopic techniques, FTIR, 1 H and 13 C-NMR, UV/vis, elemental analysis, conductivity measurements, and potentiometric titration. Investigation of the synthesized complex with metal ions showed that this complex has photochemical properties that are selective and sensitive toward the presence of mercuric ion in aqueous solution. The detection limit for mercuric ions using UV/vis spectroscopy was estimated to be ∼ 0.4 ppm. The results presented herein may have an important implication in the development of a spectroscopic selective detection for mercuric ions in aqueous solution.

show abstract

A fluorescent chemosensor for cobalt ions based on a multi-substituted phenol-ruthenium(II) tris(bipyridine) complex

Cited by 58 publications

References 20 publications

DNA as Sensors and Imaging Agents for Metal Ions

DNA as Sensors and Imaging Agents for Metal Ions

A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment

A Selective Chemosensor for Mercuric Ions Based on 4-Aminothiophenol-Ruthenium(II) Bis(bipyridine) Complex

Contact Info

Product

Resources

About

A fluorescent chemosensor for cobalt ions based on a multi-substituted phenol-ruthenium(II) tris(bipyridine) complex

Cited by 58 publications

References 20 publications

DNA as Sensors and Imaging Agents for Metal Ions

DNA as Sensors and Imaging Agents for Metal Ions

A phthalazine-based two-in-one chromogenic receptor for detecting Co2+and Cu2+in an aqueous environment

A Selective Chemosensor for Mercuric Ions Based on 4-Aminothiophenol-Ruthenium(II) Bis(bipyridine) Complex

Contact Info

Product

Resources

About

A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment