A new electrochemical sensing strategy for echinacoside based on an original nanocomposite

Li, Shuo; Duan, Yinghao; Lei, Sheng; Qiao, Jiantong; Li, Gaiping; Ye, Baoxian

doi:10.1016/j.snb.2018.07.123

Cited by 13 publications

(6 citation statements)

References 50 publications

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“…The excellent adsorption capability of IRMOF-1 is beneficial to the sensitive response of these voltammetric sensors. MB encased MOF-5@PGN/GCE has more ideal properties, which is confirmed by the wider linear range as well as lower LOD for echinacoside (Figure a) . Lv et al inkjet-printed ink that contained IRMOF-1 crystal on a resonant microcantilever and thus synthesized a microgravimetric sensor for trace amounts of aniline, a carcinogenic substance.…”

Section: Application Of Irmofssupporting

confidence: 56%

“…MB encased MOF-5@PGN/GCE has more ideal properties, which is confirmed by the wider linear range as well as lower LOD for echinacoside (Figure 18a). 130 Lv et al inkjet-printed ink that contained IRMOF-1 crystal on a resonant microcantilever and thus synthesized a microgravimetric sensor for trace amounts of aniline, a carcinogenic substance. Figure 18b is the SEM image of this microgravimetric sensor.…”

Section: Application Of Irmofsmentioning

confidence: 99%

“…(a) Linear relationship between concentration of echinacoside and the ratio of electrochemical signal of echinacoside and peak current of methylene blue ( I Ech / I MB ); (b) SEM image of MOF-5 based microgravimetric sensor and MOF-5 serve as sensing materials; (c) response of microgravimetric sensor to aniline vapor with different concentrations; (d) long-term stability of MOF-5 based microgravimetric sensor. (a: Reproduced with permission from ref . Copyright Elsevier, 2018. b−d: Reproduced with permission from ref .…”

Section: Application Of Irmofsmentioning

confidence: 99%

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Synthesis and Applications of Isoreticular Metal–Organic Frameworks IRMOFs-n (n = 1, 3, 6, 8)

Mai

Liu

2019

Crystal Growth & Design

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Isoreticular metal–organic frameworks (IRMOFs) are a series of MOFs that own similar network topology. By simple substitution of organic linkers of IRMOF-1 (i.e., MOF-5), other IRMOFs can be obtained and have unique features such as large BET surface areas and high chemical stability. IRMOF has been exalted to be an important branch of MOFs because the unique features endow IRMOF with potential applications including adsorption, catalysis, and sensing. Large BET surface areas of IRMOFs make them candidates for adsorbing small gases such as H2, CO2, and CH4. Additionally, IRMOF-3, IRMOF-6, and IRMOF-8 can separate various mixtures. Due to different catalytic active sites and pore sizes, IRMOFs can catalyze a wide range of reactions. For instance, IRMOF-1 is able to catalyze the Friedel–Crafts alkylation reaction because of its coordination-unsaturated open metal sites. NH2-containing IRMOF-3 acts as a basic catalyst for Knoevenagel condensation. Many keen sensors have been fabricated based on luminescent IRMOF-1 and IRMOF-3. IRMOF-8 with high porosity can be utilized to synthesize electrochemical sensor. This Review mainly introduces the applications of IRMOFs-n (n = 1, 3, 6, 8) and their derivatives in adsorption, catalysis, and sensing. Moreover, different strategies for synthesis and modification of IRMOFs are compared and discussed in this Review. The experiments and proposed mechanisms related to the applications of IRMOFs-n (n = 1, 3, 6, 8) are also summarized to provide an overview of IRMOFs.

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Section: Application Of Irmofssupporting

confidence: 56%

Section: Application Of Irmofsmentioning

confidence: 99%

Section: Application Of Irmofsmentioning

confidence: 99%

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Synthesis and Applications of Isoreticular Metal–Organic Frameworks IRMOFs-n (n = 1, 3, 6, 8)

Mai

Liu

2019

Crystal Growth & Design

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“…An alternative method developed for encapsulating reference molecules was to functionalise the electrode surface with metal-organic frameworks (MOFs) and utilise their porous morphology to encapsulate multiple redox labels. Ye et al formed a nanocomposite consisting of nickel nanoparticles (NiNPs), graphene oxide (GO), and poly (diallyldimethylammonium chloride) (PDDA), with MOF-5 self-assembled in situ to form the nanocomplex that was then immobilised onto a GCE (Figure 30) [99]. MB was encapsulated into the structure to act as an internal reference with a constant signal at 30 mV.…”

Section: (B) Metal Organic Frameworkmentioning

confidence: 99%

Ratiometric Electrochemistry: Improving the Robustness, Reproducibility and Reliability of Biosensors

Spring

Goggins²,

Frost

2021

Molecules

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Electrochemical biosensors are an increasingly attractive option for the development of a novel analyte detection method, especially when integration within a point-of-use device is the overall objective. In this context, accuracy and sensitivity are not compromised when working with opaque samples as the electrical readout signal can be directly read by a device without the need for any signal transduction. However, electrochemical detection can be susceptible to substantial signal drift and increased signal error. This is most apparent when analysing complex mixtures and when using small, single-use, screen-printed electrodes. Over recent years, analytical scientists have taken inspiration from self-referencing ratiometric fluorescence methods to counteract these problems and have begun to develop ratiometric electrochemical protocols to improve sensor accuracy and reliability. This review will provide coverage of key developments in ratiometric electrochemical (bio)sensors, highlighting innovative assay design, and the experiments performed that challenge assay robustness and reliability.

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“…In addition, HKUST-1 and its analogues have been extensively utilized for the modification of electrodes, claiming selective and sensitive detection, with low detection limits, excellent stability and reproducibility for molecules such as 2,4,6-trinitrophenol, 27 catechol, 28-30 hydroquinone, 28,29 2,4-dichlorophenol, 30b glyphosate, 31 resorcinol, 29 bisphenol A, 32,33 paracetamol, 25,34,35 caffeine, 34 glucose, 36 L-cysteine 37 and methyl parathion. 38 On the other hand, Li et al 39 demonstrated a new electrochemical sensor which was constructed by the in situ assembly of MOF-5 onto a PGN nanocomposite, for the determination of echinacoside, one of the natural ingredients extracted from the herb cistanche, with a limit of detection of 1.0 × 10 −8 M.…”

Section: General Commentsmentioning

confidence: 99%

Chemically modified electrodes with MOFs for the determination of inorganic and organic analytesviavoltammetric techniques: a critical review

Pournara

Tarlas

Papaefstathìou

et al. 2019

Inorg. Chem. Front.

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Voltammetric analytical techniques combine exceptional sensitivity, low cost, portability and capability for simultaneous determination of multiple analytes. The sensitivity of voltammetric analysis is largely determined by the efficiency of the working electrode. Electrodes modified with metal organic frameworks (MOFs) seem particularly promising for use in the analysis of a series of important inorganic and organic analytes. Nevertheless, research on chemically modified electrodes with MOFs is still in its infancy. In this critical review, we present the current status of research related to MOF-modified electrodes highlighting the respective MOF-modified electrodes which are based on MOFs that show exceptional chemical stability or/and sorption capability towards the targeted analytes. We also provide perspectives for future research aiming at motivating additional scientists to be involved in this exciting field of MOF-based electroanalytical sensors. † These authors contributed equally.

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A new electrochemical sensing strategy for echinacoside based on an original nanocomposite

Cited by 13 publications

References 50 publications

Synthesis and Applications of Isoreticular Metal–Organic Frameworks IRMOFs-n (n = 1, 3, 6, 8)

Synthesis and Applications of Isoreticular Metal–Organic Frameworks IRMOFs-n (n = 1, 3, 6, 8)

Ratiometric Electrochemistry: Improving the Robustness, Reproducibility and Reliability of Biosensors

Chemically modified electrodes with MOFs for the determination of inorganic and organic analytesviavoltammetric techniques: a critical review

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