Development of off–on fluorescent probes for heavy and transition metal ions

Xu, Zhaochao; Han, Su Jin; Lee, Chongmok; Yoon, Juyoung; Spring, David R.

doi:10.1039/b924503k

Cited by 138 publications

(61 citation statements)

References 28 publications

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“…Among the various detection techniques, fluorescent probes have become a powerful tool because of their high sensitivity and spatiotemporal resolution capability [9][10][11]. Fluorescent sensors for metal ions have consistently demonstrated their potential in a variety of fields, such as biological probes, environmental sensors [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Two rhodamine based chemosensors for Sn4+ and the application in living cells

Cheng

Yang

Ding

et al. 2015

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Two rhodamine based chemosensors for Sn4+ and the application in living cells

Cheng

Yang

Ding

et al. 2015

Sensors and Actuators B: Chemical

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“…Upon complexation, no shift in the position of the emission band is obvious, thereby suggesting, the observed emission is ligand based without significant MLCT contribution [21]. A weak fluorescence enhancement factor of 1.43 is obtained for [Mo(CO) 4 L] with a quantum yield of Ф = 0.20, most probably due to Mo-Se bonds resulting in more electron density for back-bonding [22].…”

mentioning

confidence: 84%

A novel macrocyclic diselenoether containing naphathalene ring and its Mo(0) tetracarbonyl complex: Synthesis, crystal structures and fluorescence study

Wei

Zhang

et al. 2011

Inorganic Chemistry Communications

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“…DPA is well known as a chelator of metal ions and is widely used for the design of new fluoroionophores. 10,17,20,2325 The terpyridine unit is an excellent general metal-ion binder. It is known that the terpyridine unit is able to coordinate with several kinds of metal ions with high binding constants especially Zn…”

Section: Resultsmentioning

confidence: 99%

“…Cu 2+ showed a fluorescence quenching effect on BDP-DPA, which has often been found for other metal-ion fluoroionophores due to energy/ electron transfer (e.g., paramagnetic Cu 2+ ). 10,11,17,22,25,26,31,36 The response of BDP-DPA to variations in pH was investigated ( Figure S2). The fluorescence bands around 591 nm originating from BDP-DPA were stable at pH 5.0, 7.0, and 9.0.…”

Section: +mentioning

confidence: 99%

BODIPY-Based Ratiometric Fluoroionophores with Bidirectional Spectral Shifts for the Selective Recognition of Heavy Metal Ions

Hafuka

Taniyama

Son

et al. 2012

Bulletin of the Chemical Society of Japan

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Two novel asymmetric BODIPY fluoroionophores with dipicolylamine (BDP-DPA, dipicolylamine: bis(pyridylmethyl)) and terpyridine (BDP-TPY) are described. These fluoroionophores display opposite wavelength responses on complexation with heavy metal ions. Furthermore, the fluorescence spectra vary depending on the ionic species. In particular, BDP-DPA shows a high affinity toward Cr 3+ and upon complexation, the fluorescence spectrum blue-shifts from 591 to 566 nm. In contrast, BDP-TPY preferentially binds to Zn 2+ and the fluorescence spectra red-shifts from 539 to 567 nm. BDP-TPY is the first example of asymmetric BODIPY with a pyridyl receptor at the 3 position showing redshifted fluorescence by complexation with metal ions. The concentration of each metal ion was successfully determined by ratiometric measurement. The wavelength-responses characteristics of these fluoroionophores could be very useful in the development of novel ratiometric fluoroionophores for metal ions.The conservation and protection of the natural environment from trace contaminants are becoming increasingly important, and in particular, heavy metals pose severe risks to human health and to the environment because of their toxicity.1 For instance, chromium (Cr) is a common heavy metal contaminant used throughout the world, and its compounds can have genotoxic effects on humans and increase the risk of lung cancer.2 It originates primarily from industrial uses, such as electroplating, metal finishing, and leather tanning.3 Zinc (Zn) is also one of the major heavy metal pollutants because of its widespread industrial applications in chemical and alloyed products, fabricated metal products, and paper products. 4 Zn compounds have hazardous effects not only on humans but also on fish and plants. 5 Currently, the most common analytical methods for heavy metals are atomic absorption spectrometry (AAS) and inductively coupled plasma (ICP) spectroscopy. 6,7 Although precise, these analytical instruments are expensive and often require complex sample preparation. In addition, they are not applicable to continuous on-site monitoring and measure only the total concentration of heavy metals. Therefore, an inexpensive and simple method is needed for determining levels of heavy metal ions, which is appropriate for monitoring industrial and environmental samples.Fluorescence spectroscopy is a desirable method for quantifying heavy metal ions because of its high sensitivity, operational simplicity, and versatile instrumentation.8 The design and development of novel fluoroionophores remain an active area of research, and various fluoroionophores for heavy metal ions have been reported. 911 In terms of sensitivity, fluoroionophores that exhibit ratiometric spectral changes induced by complexation with heavy metal ions are more favorable than those exhibiting only fluorescence enhancement ("turn-on") or fluorescence quenching ("turn-off"). Ratiometric fluoroionophores provide more detailed information about the analyte in a sample, as well as allowing reliable...

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Development of off–on fluorescent probes for heavy and transition metal ions

Cited by 138 publications

References 28 publications

Two rhodamine based chemosensors for Sn4+ and the application in living cells

Two rhodamine based chemosensors for Sn4+ and the application in living cells

A novel macrocyclic diselenoether containing naphathalene ring and its Mo(0) tetracarbonyl complex: Synthesis, crystal structures and fluorescence study

BODIPY-Based Ratiometric Fluoroionophores with Bidirectional Spectral Shifts for the Selective Recognition of Heavy Metal Ions

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