Article
Chemistry, Analytical
Fabiana F. Silva, Carla S. Santos, Gabriel N. Meloni, Alex S. Lima, Mauro Bertotti
Summary: In this study, an analytical strategy utilizing the EC' mechanism involving ascorbate and oxidized ferrocenemethanol was developed to monitor low concentrations of ascorbate. The feasibility of this approach was investigated using different mass transport regimes and both macro- and ultramicroelectrodes. An electrocatalytic process was confirmed, and a correlation between ascorbate concentration and steady-state current was established, allowing for the detection of ascorbate in the micromolar range. This method was successfully applied to quantify ascorbate in a commercial juice sample.
Article
Chemistry, Physical
Ridhima Chadha, Abhishek Das, Sudhir Kapoor, Nandita Maiti
Summary: The adsorption behavior of an anti-thyroid agent, 2-thiazoline-2-thiol (TT) on silver (Ag) and gold (Au) nanoparticles (NPs) was studied with SERS and DFT. Different tautomers were identified, and the surface-induced dimerization of TT was observed. The study provides insights into designing novel metal nanosubstrates and valuable drugs suitable for chelation therapy.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Youzhi Yao
Summary: A simple method to synthesize copper/reduced graphene oxide (Cu/rGO) nanocomposites, in which spherical copper nanoparticles are uniformly dispersed on the wrinkled surface of reduced graphene oxide, was developed. A hydroquinone electrochemical sensor based on Cu/rGO was prepared and showed high sensitivity in practical environmental water sample detection.
JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
Devaraj Manoj, Lalitha Gnanasekaran, Saravanan Rajendran, A. A. Jalil, Mohammad Nahid Siddiqui, F. Gracia, Matias Soto-Moscoso
Summary: The subject of water contamination and its impact on society and humans has been a topic of discussion for several decades. Phenolic compounds are widely found in water sources and it is crucial to determine their toxicity in natural and drinking water due to their harmful effects on humans. This study focuses on the development of an effective electrochemical sensor using a mesoporous structure of Fe3O4-TiO2 decorated on a glassy carbon electrode to detect catechol. The resulting Fe3O4-TiO2 based nanocomposite exhibited a mesoporous structure with highly active magnetite nanoparticles, showing a significant increase in the electrochemical response compared to pure TiO2.
ENVIRONMENTAL RESEARCH
(2023)
Article
Electrochemistry
Andrew S. Danis, Michael J. Counihan, Kendrich O. Hatfield, Jingjing Zhang, Garvit Agarwal, Lu Zhang, Rajeev S. Assary, Joaquin Rodriguez-Lopez
Summary: Non-aqueous redox flow batteries with high voltages are crucial for grid-level energy storage technologies, despite the challenge of redoxmer decomposition. In this study, we investigate the decomposition mechanisms of the catholyte candidate C7 in the presence of pyridine using spectroelectrochemistry. By colocalizing Raman microscopy and scanning electrochemical microscopy, we quantify the decomposition rates and identify the reaction intermediates and products. Our findings emphasize the importance of spatiotemporal resolution in understanding the behavior of materials in redox flow batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Organic
Yong Wang, Yu-Jiao Wang, Xian-Chen Liang, Mei-Hua Shen, Hua-Dong Xu, Defeng Xu
Summary: The addition reaction of thiol to vinyl azide has been extensively studied, with variously substituted aryl thiols found to be viable for this coupling process. The scope of the other partner has been successfully expanded from alpha-aryl vinyl azide to alpha-alkyl vinyl azide. A thiol-vinyl azide coupling/cyclization cascade has been achieved with substituted aryl vinyl azides carrying a 2-methoxycarbonyl group, demonstrating the value of beta-ketosulfide products in S-heterocycle synthesis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
Article
Electrochemistry
Maryam Mehrdadian, Sadegh Khazalpour, Ameneh Amani
Summary: This study investigates the electrochemical oxidation of 3 and 4 substituted catechols, and finds that the resulting p-quinones can react with nucleophiles to form p-quinone imine derivatives.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Juanjuan Liu, Roozbeh Siavash Moakhar, Sara Mahshid, Fartash Vasefi, Sebastian Wachsmann-Hogiu
Summary: A novel metallic substrate was developed for dual functional sensing via ElectroChemistry (EC) and Surface Enhanced Raman Spectroscopy (SERS), successfully demonstrating detection of chlorfenapyr with a certain level of sensitivity. This platform could pave the way for cost-effective and portable detection of other analytes while meeting residue tolerance limits according to US regulations.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Organic
M. Carmen de la Fuente, Yuri Segade, Katherine Valderrama, Jaime Rodriguez, Carlos Jimenez
Summary: The siderophore piscibactin is a key virulence factor involved in iron uptake by pathogenic bacteria causing fish diseases. A convergent total synthesis of its Ga3+ complex was described using L-/D-cysteine as chiral agents and Meldrum's acid. A Staudinger reduction/Aza-Wittig process was a key step in the synthesis of the acid-sensitive beta-hydroxy-2,4-disubstituted thiazoline moiety.
Article
Chemistry, Applied
Ren Longfang, Lin Congcong, Lei Pingchuan
Summary: An effective method to incorporate dopamine into waterborne polyurethane backbone was discovered, leading to improved film properties. The introduction of catechol groups significantly enhanced adhesive ability and could potentially be used as an environmentally friendly coating on different substrates.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Physical
Ridhima Chadha, Abhishek Das, Anil K. Debnath, Sudhir Kapoor, Nandita Maiti
Summary: A novel gold nanosensor functionalized with 2-thiazoline-2-thiol was developed for selective and sensitive detection of toxic heavy metal ions Hg(II) and Pb(II) by colorimetry. SERS and XPS were used to study the competitive surface reactivity, revealing distinctive colorimetric and SERS responses for Hg(II) and Pb(II) compared to other metal ions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
Suryansh Chandra, Jyoti Prajapati, Shubham Jaiswal, Shivendra Kumar Pandey, Ida Tiwari, Lal Bahadur Prasad, Manoj Kumar Bharty
Summary: In order to detect environmentally hazardous nitro phenols at trace levels, two novel complexes [Ag(& mu;-S-thzt)(Hthzt)(PPh3)](2)& BULL;2CH(3) CH(2)OH (1) and [Hg (thzt)(2)(o-phen)](2) were developed based on 2-thiazoline-2-thiol (Hthzt). The complexes were characterized using various analytical techniques and their fluorescence behavior was compared. The electrochemical performance of the complexes in sensing 4-nitrophenol (NP) was evaluated and complex 1 showed more effective performance as an electro-sensor than complex 2.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Karthik Kannan, Debabrata Chanda, Jagadis Gautam, Mikiyas Mekete Meshesha, Seok Gwon Jang, Bee Lyong Yang
Summary: This study reveals the synergistic effect of Mn3O4 and Co3O4 with CuO and NiO, resulting in composite materials with promising catalytic properties for the alkaline water electrolysis process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Vedeshwar Narayan Singh, Sitaram Sharma
Summary: A novel monocyclic cis-beta-lactam conjugate was efficiently synthesized through a ketene-imine [2+2] cycloaddition reaction, utilizing readily available starting materials and simple purification process. The synthesized products were characterized by spectral techniques and confirmed their cis-stereochemistry through single-crystal X-ray diffractometry.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Xiaoyu Li, Meijuan Liu, Gaocheng Zhang, Qi Qin, Can Wu, Shengxiang Wang
Summary: Different morphology of N-doped carbon materials were easily prepared using NaCl templates. The three-dimensional interconnected N-doped hierarchically porous carbon networks (3D-NC) showed excellent electrochemical activity towards the oxidation and sensing of three common environmental pollutants. This study provides a strategy for the preparation of morphology-controlled N-doped carbon-based materials and demonstrates their potential for environmental monitoring and electrochemical analysis.
Article
Biochemistry & Molecular Biology
Ali Asghar Mohammadi, Somayeh Makarem, Reza Ahdenov, Nazila Amiri Notash
MOLECULAR DIVERSITY
(2020)
Article
Chemistry, Organic
Somayeh Makarem
JOURNAL OF HETEROCYCLIC CHEMISTRY
(2020)
Article
Biochemistry & Molecular Biology
Mohammad Reza Asghariganjeh, Ali Asghar Mohammadi, Elham Tahanpesar, Ayeh Rayatzadeh, Somayeh Makarem
Summary: A series of novel tetrahydroimidazo[1,2-a]pyridine-5(1H)-one derivatives containing an electronegative pharmacophore (=CNO2) were successfully synthesized through a one-pot three-component condensation. The green protocol, carried out in a propanol medium with sodium bromide as electrolyte, showed great potential for the synthesis of fused polycyclic structures related to bioactive heterocycles.
MOLECULAR DIVERSITY
(2021)
Article
Chemistry, Analytical
Zolfaghar Aladaghlo, Ali Reza Fakhari, Seyed Iman Alavioon, Minoo Dabiri
Article
Chemistry, Multidisciplinary
Samira Mohammad Rezaei, Somayeh Makarem, Michal Alexovic, Hadi Tabani
Summary: An environmentally friendly and easy-to-use dual gel electro-membrane extraction method was developed for parallel determination of basic and acidic dyes, showing high selectivity and no need for hazardous organic solvents. The method demonstrated high extraction efficiencies, low detection limits, and successful application in complex environmental samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Zolfaghar Aladaghlo, Siamak Javanbakht, Ali Reza Fakhari, Ahmad Shaabani
Summary: A novel sorbent, Fe3O4@GQD@GM, was designed and synthesized for trace determination of three tricyclic antidepressants. The proposed method showed excellent linearity, sensitivity, and repeatability under optimized conditions. This method was successfully applied for determination of the antidepressants in various biological samples.
Article
Chemistry, Multidisciplinary
Abbas Ali Esmaeili, Fariba Mesbah, Mandieh Zangouei, Saeid Amini-Ghalandarabad, Masoud Tasmimi, Azizollah Habibi, Ali Reza Fakhari, Amir Khojastehnezhad
Summary: An efficient and rapid method has been developed for the synthesis of a novel type of pyrano[2,3-d][1,3]thiazolo[3,2-a]pyrimidine derivatives through a three-component condensation reaction, with isolated yields of 90-94% achieved in short reaction times (5-10 min).
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Multidisciplinary
Zolfaghar Aladaghlo, Ali Reza Fakhari, Ahmad Shaabani
Summary: In this study, a novel nanosorbent was designed and synthesized for trace detection of heterocyclic pesticides in citrus fruit samples using corona discharge ion mobility spectrometry. The method showed good extraction efficiency, linearity, repeatability, and sensitivity. It provides a reliable approach for pesticide analysis in citrus fruits.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Elahe Naghdi, Ali Reza Fakhari
Summary: The experiments demonstrated that vancomycin is the most effective chiral selector for enantiomeric separation, with different thermodynamic mechanisms compared to Hp-β-CD. The chiral discrimination behavior of naproxen in vancomycin-mediated CE is mainly influenced by electrostatic interactions, while inclusion complexation with Hp-β-CD plays a crucial role in enantioseparation.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Ali Reza Fakhari, Seyedeh Mahsa Safavi, Ardeshir D. Yeganeh, Mostafa M. Amini, Ali Sahragard
Summary: The study utilized amine functionalized mesostructured cellular foam as a new support for electromembrane extraction, combined with corona discharge ion mobility spectrometer analysis, to simultaneously extract and quantify tramadol and methadone from human urine samples. The method had high recoveries, sensitivity, and proved to be applicable for determining model drugs in urine samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Ali Sahragard, Ali Reza Fakhari, Kobra Sadat Hasheminasab, Zolfaghar Aladaghlo
Summary: In this study, a carbon nanotubes assisted electromembrane extraction method (CNTs/EME) coupled with capillary electrophoresis (CE) was developed for the preconcentration and determination of cocaine in various real samples. The CNTs/EME method provided higher extraction efficiencies at a lower extraction voltage compared to the EME method. The optimized conditions achieved a wide linear range of 7-3000 ng mL(-1), a low detection limit of 2.12 ng mL(-1), and high preconcentration factor, extraction recovery, and repeatability. The method was successfully applied to determine cocaine in wastewater and biological samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2023)
Correction
Chemistry, Analytical
Zolfaghar Aladaghlo, Siamak Javanbakht, Ali Reza Fakhari, Ahmad Shaabani
Article
Chemistry, Applied
Zolfaghar Aladaghlo, Siamak Javanbakht, Ali Sahragard, Ali Reza Fakhari, Ahmad Shaabani
Summary: An ultrasound-assisted dispersive solid phase microextraction (UA-DSPME) approach was developed for trace level analysis of triazole fungicides in real samples. By using a newly prepared nanosorbent and optimizing extraction parameters, this method achieved good analysis performance.
Article
Biochemical Research Methods
Mustafa Alawadi, Ali Reza Fakhari, Mohammad Reza Bayatloo, Saeed Nojavan
Summary: In this study, carboxymethylated maltodextrin (Cm-MD) was synthesized as an efficient anionic chiral selector and used for enantiomer separation of basic drugs by capillary electrophoresis. Cm-MD modified CE method achieved successful enantiomer separation with higher resolution compared to MD modified CE.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Chemistry, Analytical
Zolfaghar Aladaghlo, Bozorgmehr Maddah, Ali Reza Fakhari
Summary: This paper presents a novel solid phase microextraction fiber based on Co3O4 quantum dot incorporated polyacrylamide-co-ethylene glycol dimethacrylate followed by corona discharge ion mobility spectrometry for the trace determination of organophosphorus pesticides in environmental water samples. The method offers low limits of detection, excellent enrichment factors, good linearity, and repeatability.
ANALYTICAL METHODS
(2021)
