N-Salicyloyltryptamine: An efficient fluorescent turn-on chemosensor for F− and AcO− based on an increase in the rigidity of the receptor

Bao, Xiaoping; Zhou, Yuhui; Yu, Jin-Hua

doi:10.1016/j.jlumin.2009.10.002

Cited by 13 publications

(6 citation statements)

References 39 publications

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“…In general, molecular entities for target analytes are designed with incorporated receptors bearing complimentary responsive abilities, towards a particular guest species (18,19). Particularly, amide and hydroxyl-based receptors have been known for interacting with a wide range of analytes through hydrogen bonding, with high a nity towards biological anions such as uorides (F − ), acetates (AcO − ), hydroxides (OH − ), cyanides (CN − ) and others (9,10,(20)(21)(22)(23)(24)(25)(26). As a result, molecular recognition of biological anions through hydrogen bonding mechanism has been gaining popularity, aggravated by incremental quantities of anions in environmental streams and biological systems, well beyond threshold concentrations.…”

Section: Introductionmentioning

confidence: 99%

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Amputu

Naimhwaka

Uahengo

2022

Preprint

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A rich-in-amide receptors, acrylamide-N’phenylhydrazine carbothioamide-based fluorescent probe (MA) was synthesized via a simple and one-step procedure of Schiff base condensation reaction. The structure was characterized via spectroscopic methods of 1H NMR, UV-Vis and fluorescence methods. In addition, the bench-top applications on the detection of cations and anions, in DMSO, were carried out visually and spectroscopically. As a result, MA displayed colorimetric activities once anions or cations were added, observable by naked eye detectable colour changes. The probe turned out to discriminate cations such as Cu2+, Co2+, Fe3+ and Fe2+ via colour changes, which was complemented by the changes in UV-Vis titration spectra for each individual titration. Moreover, the addition of anions (F-, AcO-, CN- and OH-) to MA had colorimetric impacts observable by naked eyes, and complemented by spectral changes upon UV-Vis analysis. The probe was fluorometrically responsive to the addition of cations (Co2+, Cu2+, Ni2+ and Fe2+) and anions (F-, AcO-, CN- and OH-), both in DMSO, which have all resulted in chelation-based fluorescence enhancement (CHEF), with Co2+ and AcO- complexes exhibiting high affinity of the host-guest species. Thus, MA proved to be a potential chromogenic-fluorogenic probe, which could be used in monitoring the presence of specific cations and anions, in aqueous soluble solvent of DMSO.

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Section: Introductionmentioning

confidence: 99%

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Amputu

Naimhwaka

Uahengo

2022

Preprint

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“…Duo to the limitations such as effect of pH, low sensitivity, wide range of geometries, and/or because of significant dependency of the binding affinity of anionic species on solvent, anion recognition has been considered as a challenging task during the last decades [1]. These phenomena point to the importance of the introduction of a selective, sensitive and reliable method for recognition of anionic species [2].…”

Section: Introductionmentioning

confidence: 99%

Aerosol Hygroscopic Growth as a New Factor for Trace and Ultra-Trace Determination of Phosphorous in Flame Containing Optical Trapping-Cavity Ring-Down Spectroscopy

Doroodmand¹,

Ghasemi²

2017

J Anal Bioanal Tech

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A new method has been introduced based on aerosol hygroscopic growth as a new factor for trace and ultra-trace determination of phosphorous in flame containing optical trapping-cavity ring down aerosol extinction (emission) spectrometer (OT-CRD-AES). In this study, a cavity ring down has been designed using hydrogen and air as fuel and oxidant during introduction of the aerosols containing phosphorous species using an ultrasonic generator (humidifier) from an acidic solution by a flow rate of N 2 , followed by detection of the Mie scattering using a charged coupling device (CCD) system. Parameters having strong influence during following scattering of the aerosols during their hygroscopic growth inside the humidified flame (H 2 /air), include: influence and amount of Na + as radiation buffer (as light source), flow rates of H 2 , air and N 2 , kind and concentrations of acid, evaluation of the aerosols inside flame, etc. These parameters were optimized using simplex and one at a time methods. Based on the figures of merit under optimized condition, two linear calibration curves with reverse slopes were evaluated between 10.0 -250.0 ng mL -1 and 1.0 -20.0 µg mL -1 with correlation coefficients (R 2 ) the same as 0.999 and 0.998, respectively. The calibration sensitivities were also estimated to 57.46 and 0.348 (a.u), respectively, with detection limit of 5.0 ng mL -1 . The mechanism of the radiation (Mie scattering) was also evidenced based on i) dependency of the scattered radiations to the quantity of an alkali ions such as Na+ as well as the humidity, ii) presence of acceptable correlation between the response of the cavity with turbidometry, iii) observation of blue shift from green (color related to the luminescence of HPO* in H 2 /air flame) to blue (scattered radiation) and finally iv) effect of hydration number during stability and growth of the aerosols inside the flames.No serious interference was evaluated during analysis of at least 500-fold excess of various foreign species. However, the only observed interference was evaluated during introduction of 200-fold excess of SO 4 2-. Good correlation was also evaluated between the results obtained from this technique and ion exchange chromatography during analysis of wastewater samples that clearly revealed the reliability of this method for phosphorous detection and determination at µg mL -1 and ng mL -1 levels.

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“…The design and synthesis of intelligent organic molecules with sensors properties, in particular for detection of heavy metal ions, is currently a task of prime importance for medical, environmental and biological applications. [1][2][3] The most common organic chemosensors consist structurally of two principal components: a signaling unit (chromophore/fluorophore) and a receptor part, both can be linked directly or via a spacer. [4][5] An effective chemosensor must convert the event of cation or anion recognition by the ionophore part into an easily monitored and highly sensitive optical signal from the fluorophore.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, the cation receptor moiety is responsible for complexation of heavy metals by electrostatic and/or hydrogen-bonding interactions utilizing some groups such as sulfona amide, urea, hydroxyl, amines, imines and so on. 2 An efficient chromophore to be used in sensors has to show a strong change in the electronic transition or in the emission band for easy recognition and a specific signal for particular cation.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic detection of metals ions using a novel selective sensor

et al. 2011

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Colorimetric chemosensors are simple, economical and practical optical approach for detecting toxic metal ions (Hg 2+ , Pb 2+ , Ni 2+ , etc.) in the environment. In this work, we present a simple but highly specific organic compound 4-chloro-2-((E)-((E)-3-(4-(dimethylamino)phenyl)allylidene)amino)phenol (L1) that acts as a colorimetric sensor for divalent metal ions in H 2 O. The mechanism of the interaction between L1 and various metal-ions has been established by UV-vis absorption and emission spectroscopic experiments that indicate favorable coordination of metal ions with L1 in different solvents. Experimental results indicate that the shape of the electronic transition band of L1 (receptor compound) changed after the interaction with divalent metal-ions, such as Hg 2+ , Pb 2+ , Mn 2+ , Co 2+ , Cu 2+ , and Ni 2+ in aqueous solution. We found that L1 have a considerable selectivity for Ni 2+ ions, even in presence of other metals ions when mixtures of DMSO/H 2 O as are used as solvents. L1, which has been targeted for sensing transition metal ions, exhibits binding-induced color changes from yellow to pink observed even by the naked eye in presence of Ni 2+ ions.

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N-Salicyloyltryptamine: An efficient fluorescent turn-on chemosensor for F− and AcO− based on an increase in the rigidity of the receptor

Cited by 13 publications

References 39 publications

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Aerosol Hygroscopic Growth as a New Factor for Trace and Ultra-Trace Determination of Phosphorous in Flame Containing Optical Trapping-Cavity Ring-Down Spectroscopy

Spectroscopic detection of metals ions using a novel selective sensor

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N-Salicyloyltryptamine: An efficient fluorescent turn-on chemosensor for F− and AcO− based on an increase in the rigidity of the receptor

Cited by 13 publications

References 39 publications

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ &amp; Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ &amp; Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Aerosol Hygroscopic Growth as a New Factor for Trace and Ultra-Trace Determination of Phosphorous in Flame Containing Optical Trapping-Cavity Ring-Down Spectroscopy

Spectroscopic detection of metals ions using a novel selective sensor

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Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners

Chromogenic amide and CHEF-based emissive receptors for Cu 2+ & Co 2+ , as well as biological anions including the notorious CN - : The impact of a molecular chameleon, enticing early career beginners