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  1. Article ; Online: Design and optimization of a cost-effective paper-based voltammetric sensor for the determination of trinitrotoluene (TNT) utilizing cysteamine-linked Fe

    Soltani-Shahrivar, Morteza / Afkhami, Abbas / Madrakian, Tayyebeh

    Talanta

    2024  Volume 274, Page(s) 126041

    Abstract: This paper presents the development and optimization of a cost-effective paper electrochemical sensor for the detection of TNT using ... ...

    Abstract This paper presents the development and optimization of a cost-effective paper electrochemical sensor for the detection of TNT using Fe
    Language English
    Publishing date 2024-04-03
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2024.126041
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Fabrication of impedimetric sensor based on metallic nanoparticle for the determination of mesna anticancer drug.

    Mehrban, Maryam / Madrakian, Tayyebeh / Afkhami, Abbas / Jalal, Nahid Rezvani

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 11381

    Abstract: Electrochemical impedance spectroscopy (EIS) is a highly effective technique for studying the surface of electrodes in great detail. EIS-based electrochemical sensors have been widely reported, which measure the charge transfer resistance ( ... ...

    Abstract Electrochemical impedance spectroscopy (EIS) is a highly effective technique for studying the surface of electrodes in great detail. EIS-based electrochemical sensors have been widely reported, which measure the charge transfer resistance (R
    MeSH term(s) Metal Nanoparticles/chemistry ; Mesna ; Gold/chemistry ; Nanotubes, Carbon/chemistry ; Antineoplastic Agents ; Electrodes ; Electrochemical Techniques ; Limit of Detection
    Chemical Substances Mesna (NR7O1405Q9) ; Gold (7440-57-5) ; Nanotubes, Carbon ; Antineoplastic Agents
    Language English
    Publishing date 2023-07-14
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-38643-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Sensitive and selective impedimetric determination of TNT using RSM-CCD optimization.

    Soltani-Shahrivar, Morteza / Afkhami, Abbas / Madrakian, Tayyebeh / Jalal, Nahid Rezavani

    Talanta

    2023  Volume 257, Page(s) 124381

    Abstract: Detection of trace amounts of 2,4,6-Trinitrotoluene as a widely used explosive in the military and industrial sectors is of vital importance due to security and environmental concerns. The sensitive and selective measurement characteristics of the ... ...

    Abstract Detection of trace amounts of 2,4,6-Trinitrotoluene as a widely used explosive in the military and industrial sectors is of vital importance due to security and environmental concerns. The sensitive and selective measurement characteristics of the compound still is considered a challenge for analytical chemists. Unlike conventional optical and electrochemical methods, the electrochemical impedance spectroscopy technique (EIS), has a very high sensitivity, but it faces a significant challenge in that it requires complex and expensive steps to modify the electrode surface with selective agents. We reported the design and construction of an inexpensive, simple, sensitive, and selective impedimetric electrochemical TNT sensor based on the formation of a Meisenheimer complex between magnetic multiwalled carbon nanotubes modified with aminopropyl triethoxysilane (MMWCNTs @ APTES) and TNT. The formation of the mentioned charge transfer complex at the electrode-solution interface blocks the electrode surface and disrupts the charge transfer in [(Fe (CN)
    Language English
    Publishing date 2023-02-17
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2023.124381
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: PVP-coated silver nanocubes as RRS probe for sensitive determination of Haloperidol in real samples.

    Gheitaran, Rasoul / Afkhami, Abbas / Madrakian, Tayyebeh

    Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

    2022  Volume 272, Page(s) 121025

    Abstract: Polyol synthesis of silver nanocubes (Ag NCs) under dark conditions yielded nanoparticles with high uniformity and purity, as well as edge lengths of 42 nm with good stability and scattering cross-section. These nanoparticles were characterized by SEM, ... ...

    Abstract Polyol synthesis of silver nanocubes (Ag NCs) under dark conditions yielded nanoparticles with high uniformity and purity, as well as edge lengths of 42 nm with good stability and scattering cross-section. These nanoparticles were characterized by SEM, TEM, and Uv-vis spectroscopy. The presence of polyvinylpyrrolidone (PVP) as a capping agent on the surface of Ag NCs, as well as its satisfactory interaction level with Haloperidol (Hp) as an antipsychotic drug, has led to the use of these nanoparticles as Resonance RayleighScattering (RRS) probe to measure Hp. Indeed, Hp resulted in reducing the RRS signal of Ag NCs, and this change in RRS intensity was linear in the range of 10.0 to 800.0 µg L
    MeSH term(s) Haloperidol ; Humans ; Limit of Detection ; Metal Nanoparticles/chemistry ; Povidone ; Silver/chemistry
    Chemical Substances Silver (3M4G523W1G) ; Povidone (FZ989GH94E) ; Haloperidol (J6292F8L3D)
    Language English
    Publishing date 2022-02-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 210413-1
    ISSN 1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
    ISSN (online) 1873-3557
    ISSN 0370-8322 ; 0584-8539 ; 1386-1425
    DOI 10.1016/j.saa.2022.121025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 51/98: Show issues
    Z 1611 a: Show issues
    924/340: Show issues

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  5. Article ; Online: Effect of light at different wavelengths on polyol synthesis of silver nanocubes.

    Gheitaran, Rasoul / Afkhami, Abbas / Madrakian, Tayyebeh

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 19202

    Abstract: Despite the presence of light-sensitive species in the polyol synthesis of silver nanocubes, the influence of light on it has yet to be investigated. Herein, we demonstrated that light radiation, by generating plasmon-based hot electrons and subsequently ...

    Abstract Despite the presence of light-sensitive species in the polyol synthesis of silver nanocubes, the influence of light on it has yet to be investigated. Herein, we demonstrated that light radiation, by generating plasmon-based hot electrons and subsequently increasing the reduction rate of Ag
    MeSH term(s) Silver/chemistry ; Metal Nanoparticles/chemistry ; Particle Size ; Polymers/chemistry
    Chemical Substances Silver (3M4G523W1G) ; polyol ; Polymers
    Language English
    Publishing date 2022-11-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-23959-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: QSAR analysis on a large and diverse set of potent phosphoinositide 3-kinase gamma (PI3Kγ) inhibitors using MLR and ANN methods.

    Sadeghi, Fereydoun / Afkhami, Abbas / Madrakian, Tayyebeh / Ghavami, Raouf

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 6090

    Abstract: Phosphorylation of PI3Kγ as a member of lipid kinases-enzymes, plays a crucial role in regulating immune cells through the generation of intracellular signals. Deregulation of this pathway is involved in several tumors. In this research, diverse sets of ... ...

    Abstract Phosphorylation of PI3Kγ as a member of lipid kinases-enzymes, plays a crucial role in regulating immune cells through the generation of intracellular signals. Deregulation of this pathway is involved in several tumors. In this research, diverse sets of potent and selective isoform-specific PI3Kγ inhibitors whose drug-likeness was confirmed based on Lipinski's rule of five were used in the modeling process. Genetic algorithm (GA)-based multivariate analysis was employed on the half-maximal inhibitory concentration (IC
    MeSH term(s) Linear Models ; Multivariate Analysis ; Neural Networks, Computer ; Phosphatidylinositol 3-Kinase ; Phosphatidylinositol 3-Kinases ; Phosphoinositide-3 Kinase Inhibitors/pharmacology ; Quantitative Structure-Activity Relationship
    Chemical Substances Phosphoinositide-3 Kinase Inhibitors ; Phosphatidylinositol 3-Kinase (EC 2.7.1.137)
    Language English
    Publishing date 2022-04-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-09843-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Simultaneous determination of Pb

    Jalali Sarvestani, Mohammad Reza / Madrakian, Tayyebeh / Afkhami, Abbas

    Food chemistry

    2022  Volume 402, Page(s) 134246

    Abstract: Heavy metals determination is of great importance. In this respect, a recently synthesized melamine-based covalent organic framework (Schiff base ... ...

    Abstract Heavy metals determination is of great importance. In this respect, a recently synthesized melamine-based covalent organic framework (Schiff base network
    MeSH term(s) Carbon/chemistry ; Metal-Organic Frameworks ; Lead ; Schiff Bases/chemistry ; Cadmium/analysis ; Mercury/analysis ; Electrodes ; Metals, Heavy/analysis ; Ions/chemistry
    Chemical Substances Carbon (7440-44-0) ; Metal-Organic Frameworks ; melamine (N3GP2YSD88) ; Lead (2P299V784P) ; Schiff Bases ; Cadmium (00BH33GNGH) ; Mercury (FXS1BY2PGL) ; Metals, Heavy ; Ions
    Language English
    Publishing date 2022-09-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2022.134246
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

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  8. Article ; Online: Ultra-trace levels voltammetric determination of Pb

    Jalali Sarvestani, Mohammad Reza / Madrakian, Tayyebeh / Afkhami, Abbas

    Talanta

    2022  Volume 250, Page(s) 123716

    Abstract: In this research, a highly sensitive electrochemical sensor was developed for the square wave anodic stripping voltammetric determination of ... ...

    Abstract In this research, a highly sensitive electrochemical sensor was developed for the square wave anodic stripping voltammetric determination of Pb
    MeSH term(s) Bismuth ; Carbon ; Electrochemical Techniques/methods ; Electrodes ; Lead ; Metal-Organic Frameworks ; Schiff Bases
    Chemical Substances Metal-Organic Frameworks ; Schiff Bases ; Lead (2P299V784P) ; Carbon (7440-44-0) ; Bismuth (U015TT5I8H)
    Language English
    Publishing date 2022-06-30
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2022.123716
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Simultaneous determination of Pb2+ and Hg2+ at food specimens by a Melamine-based covalent organic framework modified glassy carbon electrode

    Jalali Sarvestani, Mohammad Reza / Madrakian, Tayyebeh / Afkhami, Abbas

    Food chemistry. 2023 Feb. 15, v. 402

    2023  

    Abstract: Heavy metals determination is of great importance. In this respect, a recently synthesized melamine-based covalent organic framework (Schiff base network₁ (SNW₁)) was used in this research as a novel modifier to alter a glassy carbon electrode for the ... ...

    Abstract Heavy metals determination is of great importance. In this respect, a recently synthesized melamine-based covalent organic framework (Schiff base network₁ (SNW₁)) was used in this research as a novel modifier to alter a glassy carbon electrode for the simultaneous anodic stripping square wave voltammetric measurement of Pb²⁺ and Hg²⁺ ions. At first, the complexation of SNW₁ with Pb²⁺ and Hg²⁺ ions were evaluated by density functional theory calculations. Afterward, the modified electrode was characterized by various techniques including Fourier-transform infrared spectroscopy, Scanning electron microscopy, energy dispersive X-ray analysis, cyclic voltammetry, and electrochemical impedance spectroscopy. Then, all of the effective experimental factors including pH, supporting electrolyte type, and instrumental parameters were optimized. Under optimized conditions (pH = 2.0, deposition time = 150 S, accumulation potential = -1000 (mV), pulse amplitude = 40 mV, frequency = 50 Hz, and voltage step = 7 mV) the designed sensor showed a linear response over the concentration ranges of 0.01–0.3 and 0.05–0.3 µmol/L for Pb²⁺ and Hg²⁺ respectively with a detection limit of 0.00072 and 0.01211 µmol/L. In the end, the designed electrochemical sensor was successfully employed for simultaneous measurement of Pb²⁺ and Hg²⁺ at different edible samples.
    Keywords Fourier transform infrared spectroscopy ; density functional theory ; detection limit ; dielectric spectroscopy ; electric potential difference ; electrolytes ; electron microscopy ; energy-dispersive X-ray analysis ; food chemistry ; glassy carbon electrode ; pH ; schiff bases ; sensors (equipment) ; voltammetry
    Language English
    Dates of publication 2023-0215
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2022.134246
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

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  10. Article ; Online: Self-assembled graphene-based microfibers with eclectic optical properties.

    Ghamsari, Mahdi / Madrakian, Tayyebeh / Afkhami, Abbas / Ahmadi, Mazaher

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 5451

    Abstract: The construction of graphene-based microfibers with reinforced mechanical and electrical properties has been the subject of numerous researches in recent years. However, the fabrication of graphene-based fibers with remarkable optical features still ... ...

    Abstract The construction of graphene-based microfibers with reinforced mechanical and electrical properties has been the subject of numerous researches in recent years. However, the fabrication of graphene-based fibers with remarkable optical features still remains a challenge and has not been addressed so far. This paper aims to report a series of flexible self-assembled fibers, synthesized through a few-minute sonication of thermally oxidized graphene oxide nanosheets, so-called Nanoporous Over-Oxidized Graphene (NOG), in an acidic medium. These free-standing glassy fibers were classified into four distinct morphological structures and displayed a collection of intriguing optical properties comprising high transparency, strong birefringence, fixed body colorations (e.g. colorless, blue, green, and red), tunable interference marginal colorations, UV-visible-near IR fluorescence, and upconversion emissions. Moreover, they exhibited high chemical stability in strongly acidic, basic, and oxidizing media. The foregoing notable attributes introduce the NOG fiber as a promising candidate both for the construction of graphene-based photoluminescent textiles and the development of a wide variety of optical applications.
    Language English
    Publishing date 2021-03-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-84940-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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