Acridine-derivated receptor for selective mercury binding based on chelation-enhanced fluorescence effect

Karagöz, Fehmi; Güney, Orhan; Kandaz, Mehmet; Bilgiçli, Ahmet T.

doi:10.1016/j.jlumin.2012.05.005

Cited by 27 publications

(9 citation statements)

References 31 publications

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“…This increase in fluorescent intensity was probably due to the chelation-enhanced fluorescence (CHEF) effect that inhibiting the PET process by complexation of SK-1 with Al 3+ . 36 Furthermore, the detection limit of Al 3+ was estimated based on the fluorescence titration profile (Fig. 5c).…”

Section: Titration and Competition Studiesmentioning

confidence: 99%

A Simple and Highly Sensitive Turn-on Schiff Base Type Naked-eye Fluorescent Sensor for Aluminum Ion in Living Cells

Keskin

Bayrakcı

2019

ACSi

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Six different Schiff bases to be used as turn-on fluorescent probes based on photoinduced electron transfer (PET) mechanism for the recognition of aluminum ions were successfully synthesized and characterized. The binding abilities of synthesized compounds with different metal cations were investigated by absorption and emission spectra. From the spectrophotometric experiments, it were seen that compound SK-1 displayed an excellent fluorescence response towards targeted aluminum ions probably due to its suitable chelating structure. Furthermore, such compound SK-1 also showed high sensitivity and selectivity response towards aluminum ions over other competing ions. In addition, the potential biological applications of SK-1 to detect aluminum ions in living cells were also investigated and results showed that fluorescence sensor SK-1 could be a promising probe for determining and/or monitoring aluminum ions in both biological and/or chemical samples.

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Section: Titration and Competition Studiesmentioning

confidence: 99%

A Simple and Highly Sensitive Turn-on Schiff Base Type Naked-eye Fluorescent Sensor for Aluminum Ion in Living Cells

Keskin

Bayrakcı

2019

ACSi

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“…The increase in emission of FFS in Hg-imp film is due to the coordination of Hg 2? with FFS causing the chelation-enhanced effect [25]. After the Hg 2?…”

Section: Fluorescence Signals Of Sol-gel Filmsmentioning

confidence: 99%

Development and characterization of ion-imprinted sol–gel-derived fluorescent film for selective recognition of mercury(II) ion

Karagöz

Güney

2015

J Sol-Gel Sci Technol

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In this work, an ion-imprinted fluorescent sensor by combining sol-gel processing and spin coating was developed. Fluorescent functional silane was first synthesized and reacted with tetramethoxysilane to obtain solgel-derived materials and then used as a receptor for selective removal and sensing of Hg 2? in aqueous solution. Ion-imprinted material synthesized in the presence of Hg 2? was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, N 2 adsorptiondesorption analysis and thermogravimetric analysis by comparing with non-imprinted material obtained in the absence of Hg 2? . Surface area, pore volume and diameter were analyzed from the profile of nitrogen adsorption. It was observed that fluorescent sol-gel film exhibits distinctive change in fluorescence emission upon interaction with Hg 2? . Steady-state fluorescence experiments were performed for spectral characterization of the films, and the advancement of the reaction was defined. The shift in emission maxima and other spectral changes of the different matrices have been identified, and gelation time of sol-gel network was revealed by monitoring the emission of fluorescent silane in pre-gel solution. The corresponding selectivity factors of the imprinted fluorescent film toward Hg 2? against the other analogs were evaluated. Graphical AbstractKeywords Optical sensor Á Sol-gel thin film Á Mercury ion-imprinting Á Fluorescence sensing

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“…Particularly, some of them are found to be efficient fluorescent chemosensors for recognition of transition metal ions such as Hg 2+ [10] and emitters for luminescence studies [11]. Also, acridine orange (3,6-dimethylaminoacridine) is a nucleic acidselective metachromatic stain valuable for cell cycle determination.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectral Studies and Quantum-Chemical Investigations on the Powerful Fluorophores: Imidazo[4,5-a]acridines

et al. 2015

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The new 3H-imidazo[4,5-a]acridine-11-carbonitriles were prepared from the reaction of 1-alkyl-5-nitro-1H-benzoimidazoles with 2-(4-methoxyphenyl)acetonitrile and benzyl cyanide by nucleophilic substitution of hydrogen in high yields. Physical spectral and analytical data have confirmed the structures of the synthesized dyes. The optical and solvatochromic properties of these compounds were investigated and the results showed that they show very interesting photophysical properties. Density functional theory (DFT) calculations of fluorescent dyes were performed to provide the optimized geometries and relevant frontier orbitals. Furthermore, intra- and intermolecular interactions in fluorescent imidazo[4,5-a]acridines were evaluated by AIM (Atoms in Molecules) analysis.

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Acridine-derivated receptor for selective mercury binding based on chelation-enhanced fluorescence effect

Cited by 27 publications

References 31 publications

A Simple and Highly Sensitive Turn-on Schiff Base Type Naked-eye Fluorescent Sensor for Aluminum Ion in Living Cells

A Simple and Highly Sensitive Turn-on Schiff Base Type Naked-eye Fluorescent Sensor for Aluminum Ion in Living Cells

Development and characterization of ion-imprinted sol–gel-derived fluorescent film for selective recognition of mercury(II) ion

Synthesis, Spectral Studies and Quantum-Chemical Investigations on the Powerful Fluorophores: Imidazo[4,5-a]acridines

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