Selective and Sensitive Detection of Cyanide Based on the Displacement Strategy Using a Water-Soluble Fluorescent Probe

La, Ming; Hao, Yuanqiang; Wang, Zhaoyang; Han, Guo‐Cheng; Qu, Lingbo

doi:10.1155/2016/1462013

Cited by 18 publications

(10 citation statements)

References 32 publications

(31 reference statements)

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“…A common class of ion selective materials are known as ionophores. Despite there being many known ionophores showing specific anion interactions [91][92][93][94][95][96][97][98][99], there are some limitations to their use in practical devices. These limitations are listed below [100];…”

Section: Ion Sensing In Conducting Polymersmentioning

confidence: 99%

Recent advances in ion sensing with conducting polymers

Sethumadhavan

Rudd

Switalska

et al. 2019

BMC Mat

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Ions are present throughout our environment-from biological systems to agriculture and beyond. Many important processes and mechanisms are driven by their presence and their relative concentration. In order to study, understand and/or control these, it is important to know what ions are present and in what concentration-highlighting the importance of ion sensing. Materials that show specific ion interaction with a commensurate change in measurable properties are the key components of ion sensing. One such type are conducting polymers. Conducting polymers are referred to as 'active' because they show observable changes in their electrical and optical (and other) properties in response to changing levels of doping with ions. For example, p-type conducting polymers such as poly(3,4ethylenedioxythiophene) and polypyrrole, can transition from semi-conducting to metallic in response to increasing levels of anions inserted into their structure. Under certain circumstances, conducting polymers also interact with cations-showing their utility in sensing. Herein, recent advances in conducting polymers will be reviewed in the context of sensing ions. The main scope of this review is to critically evaluate our current understanding of ion interactions with conducting polymers and explore how these novel materials can contribute to improving our ion-sensing capabilities.

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Section: Ion Sensing In Conducting Polymersmentioning

confidence: 99%

Recent advances in ion sensing with conducting polymers

Sethumadhavan

Rudd

Switalska

et al. 2019

BMC Mat

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“…In recent years, colorimetric and fluorescent probes have become an effective analytical tool due to unique capability for sensitive monitoring of metal ions [1,2], anions [3,4], reactive oxygen species [5,6] and biomolecules [7,8]. Among the various chromophore scaffolds, lactam derivatives of rhodamines represent one of the most developed platform for the design of selective colorimetric and fluorescent probes due to their high extinction coefficients, high quantum yields, and excellent chemical and photostability [9,10].…”

Section: Introductionmentioning

confidence: 99%

FRET Pumping of Rhodamine-Based Probe in Light-Harvesting Nanoparticles for Highly Sensitive Detection of Cu2+

Mironenko

Tutov

Chepak

et al. 2021

Preprint

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In this work we presented novel strategy for increasing the performance of popular fluorescent probes on the basis of rhodamine-lactam platform. This strategy is based on the incorporation of probe molecules into the light-harvesting nanoparticles to pump modulated optical signal by Förster resonant energy transfer. Using the commercially available Cu2+ probe as a reference chemical, we have developed an efficient approach to significantly improve its sensing performance. Within obtained nanoparticles coumarin-30 nanoantenna absorbs excitation light and pumps incorporated sensing molecules providing bright fluorescence to a small number of emitters, while changing the probe-analyte equilibrium from liquid-liquid to solid-liquid significantly increased the apparent association constant, which together provided a ~100-fold decrease in the detection limit. The developed nanoprobe allows highly sensitive detection of Cu2+ ions in aqueous media without organic co-solvents usually required for dissolution of the probe, and demonstrate compatibility with inexpensive fluorometers and the ability to detect low concentrations with the naked eye.

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“…It is known that substances containing cyanide are extremely toxic for physiological systems and therefore methods for cyanide ions detection have been under considerable research [10,11]. Optical sensing is mainly based on detecting binding sites of C-C, C-N etc.…”

Section: Introductionmentioning

confidence: 99%

On KCN treatment effects on optical properties of Si-based bilayers

Müllerová

Pinčík

Králik

et al. 2019

Journal of Electrical Engineering

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In this paper we report results from optical transmittance spectroscopy complemented with data from Raman scattering measurements to determine optical properties of two series of silicon based bilayers deposited by PECVD on glass substrate (intrinsic a-Si:H/p-type a-SiC:H and n-type mc-Si:H/intrinsic a-Si:H). These samples represent segments of common p-i-n thin film amorphous silicon solar cells with intrinsic hydrogenated silicon (a-Si:H) as the solar absorber. The members of the series differ by the KCN treatment conditions. Dispersive and absorptive optical properties – refractive indices, absorption coefficients and optical band gaps were determined from transmittance spectra. Each bilayer was considered as one effective thin film the optical properties of which can be regarded as effective optical properties of the bilayer structure. After KCN treatments refractive indices were modified probably due to the structural changes of bilayers. Moreover the effect of the solvent used in KCN solutions was recognized. Optical band gaps calculated either by the Tauc procedure or determined as iso-absorption levels were found to be only slightly KCN treatment dependent.

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Selective and Sensitive Detection of Cyanide Based on the Displacement Strategy Using a Water-Soluble Fluorescent Probe

Cited by 18 publications

References 32 publications

Recent advances in ion sensing with conducting polymers

Recent advances in ion sensing with conducting polymers

FRET Pumping of Rhodamine-Based Probe in Light-Harvesting Nanoparticles for Highly Sensitive Detection of Cu2+

On KCN treatment effects on optical properties of Si-based bilayers

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