A potassium-selective electrochemical sensor based on crown-ether functionalized self assembled monolayer

Kumbhat, Sunita; Singh, Urvasini

doi:10.1016/j.jelechem.2017.12.051

Cited by 31 publications

(27 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This shows a selective host‐guest complexation of K + ions with chosen 4‐AB‐18‐C‐6 ligand. The IR‐spectra of 4‐AB‐18‐C‐6 and its potassium thiocyanate complex reported earlier by our group confirms the inclusion of K + in the crown cavity and effect of C−O−C ether bonding on IR signals of complex.…”

Section: Resultsmentioning

confidence: 99%

“…Now the approach of positively charged redox species Ru(NH 3 ) 6 3+ towards electrode is hindered, as a result, the redox current signal gets impeded. The concept of switching ‘on’ and ‘off’ of current with absence and presence of K + ion in present sensor configuration is in concordance with earlier reports for self assembled monolayer of 2‐[(6‐mercaptohexyl)oxy]methyl‐15‐crown‐5 and 4‐aminobenzo‐18‐crown‐6 on the gold surface .…”

Section: Resultsmentioning

confidence: 99%

“…In continuation with our previous reports on alkali ion sensing employing self assembled monolayer modified (SAM) gold sensor ,, herein we report a comparatively low cost and facile approach for fabrication of Nafion based disposable carbon sensor for highly selective monitoring of soil potassium.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nafion‐modified Carbon Based Sensor for Soil Potassium Detection

2019

Self Cite

View full text Add to dashboard Cite

In the present investigation, we report a voltammetric sensor based on Nafion modified screen printed carbon ink functionalized with 4‐aminobenzo‐18‐crown‐6 ether for the detection of soil potassium. The potassium is one of the major nutrient elements required by the plants and is critical for the crop productivity. The selective and sensitive assay is based on recording change in current signal of a positively charged redox probe, hexammineruthenium(III)chloride in the absence and presence of K+ ion in solution. The sensing interface is highly stable and reproducible for detection of K+ ion a under a wide range of concentration 1 to 500 ppm. The detection sensitivity over a wide concentration range was achieved by altering the concentration of redox species. Mechanistically, the recognition properties of 4‐aminobenzo‐18‐Crown‐6 covalently bound to the Nafion on carbon surface was found to be selective for potassium ion over sodium, ammonium and calcium ion. Potassium recognition through host‐guest binding of crown ether derivative and proposed simplicity of fabrication protocol makes the systems highly promising for real‐time applications in soil analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Nafion‐modified Carbon Based Sensor for Soil Potassium Detection

2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…The working electrode (WE) is coated with ISM cocktail consists of crown ether (18-crown-6), DOS, and PVC dissolved in THF. 18crown-6 (ionophore) has been utilized in ion selective membrane on WE to achieve high selectivity towards K + ions [9]. While the other terminal, reference electrode (RE), silver conductive ink is coated, dried and cleaned with acetone/IPA and DI water and then it is dipped in sodium hypochlorite solution(NaOCl 4%) to produce a top layer of AgCl as shown in figure 2.…”

Section: Methodsmentioning

confidence: 99%

Enhancing Potentiometric Response of Electrochemical Sensor Using Modified Ion-Sensitive Transistor

Abhinav¹,

Patkar²,

Vinchurkar³

et al. 2019

Preprint

View full text Add to dashboard Cite

In this work, we present a novel combination of solid-state ion-selective electrode and field effect transistor (FET) integrated on same platform. Thus, creating an extended gate field effect transistor (EGFET). We have built an electrochemical sensing unit comprised of all solid-state electrodes, an Ag/AgCl reference electrode and ionophore coated gold electrode. Unlike any of the earlier reports, all the electrodes are integrated with a FET in a single plane of the printed circuit board (PCB), hence mitigating the issues of separate wire bonding or external connection between the sensing element and the transducer by using PCB traces. In this work, we demonstrate for the first time, the use of ion sensitive electrode (ISE) in EGFET configuration without degrading the linearity and sensitivity due to the external voltage bias. Potentiometric measurement on our K + ISE shows near Nernstian limit sensitivity (49 mV/decade), low concentration for the limit of detection (10 −6 M), and linearity over a large range of detection(10 −4 M to 1 M).

show abstract

“…By taking advantage of supramolecular drug delivery system, the loading or release of drugs can be controlled precisely Drug carrier system based on supramolecules has gradually become an emerging area of interest. Supramolecular host compounds mainly include cucurbituril (Plumb et al, 2012; Isaacs, 2014; Oun et al, 2014; Assaf and Nau, 2015; Barrow et al, 2015; Chen et al, 2017), Pillararene (Duan et al, 2013; Wheate et al, 2016; Huang et al, 2017; Li et al, 2017; Cheng et al, 2019) cyclodextrin (Lu et al, 2015; Bhunia et al, 2018), crown ether (Kumbhat and Singh, 2018) and calixarene (Narkhede et al, 2018). Calixarenes, which are formed by condensation of multiple phenol units and formaldehyde, are considered to represent the third-generation of host-guest supramolecular chemistry.…”

Section: Introductionmentioning

confidence: 99%

Design, Preparation, and Characterization of Novel Calix[4]arene Bioactive Carrier for Antitumor Drug Delivery

Wang

Liu

et al. 2019

Front. Chem.

View full text Add to dashboard Cite

An amphiphilic and bioactive calix[4]arene derivative 8 (CA) is designed and successfully synthesized from tert-butyl calix[4] arene 1 by sequential inverse F-C alkylation, nitration, O-alkylation, esterification, aminolysis, reduction, and acylation reaction. The blank micelles of FA-CA and doxorubicin (DOX) loaded micelles FA-CA-DOX are prepared subsequently undergoing self-assembly and dialysis of CA and DSPE-PEG2000-FA. The drug release kinetics curve of the encapsulated-DOX micelle demonstrates a rapid release under mild conditions, indicating the good pH-responsive ability. Furthermore, the cytotoxicity of DOX-loaded micelle respect to the blank micelle against seven different human carcinoma (A549, HeLa, HepG2, HCT116, MCF-7, MDA-MB231, and SW480) cells has been also investigated. The results confirm the more significant inhibitory effect of DOX-loaded micelle than those of DOX and the blank micelles. The CDI calculations show a synergistic effect between blank micelles and DOX in inducing tumor cell death. In conclusion, FA-CA micelles reported in this work was a promising drug delivery vehicle for tumor targeting therapy.

show abstract

A potassium-selective electrochemical sensor based on crown-ether functionalized self assembled monolayer

Cited by 31 publications

References 31 publications

Nafion‐modified Carbon Based Sensor for Soil Potassium Detection

Nafion‐modified Carbon Based Sensor for Soil Potassium Detection

Enhancing Potentiometric Response of Electrochemical Sensor Using Modified Ion-Sensitive Transistor

Design, Preparation, and Characterization of Novel Calix[4]arene Bioactive Carrier for Antitumor Drug Delivery

Contact Info

Product

Resources

About