Article
Chemistry, Applied
Alireza Oveisi Keikha, Somaye Shahraki, Hassan Mansouri-Torshizi, Effat Dehghanian, Mostafa Heidari Majd
Summary: Two new gold(III) complexes, [AuL1]Cl-3, A, and [AuL2]Cl-3, B, were synthesized and characterized. DFT calculations showed square planar geometry for both complexes. Antioxidant results showed that the ability of compounds to inhibit DPPH center dot is as follows: A > B > L-2 > L-1. The anticancer assay showed that both complexes have the ability to inhibit the growth of HCT116 colon cancer cell lines, but B shows a relatively better effect than cisplatin. The interaction effects of A and B on the activity and structure of the bovine liver catalase (BLC) were investigated by spectroscopic techniques and molecular docking. Both complexes were able to change the performance and structure of BLC; B has a greater effect on BLC activity, so at concentration of 2 mu M, A and B inhibit initial BLC activity by 92.2% and 55.6%, respectively. The interaction mechanism of A and B with BLC was also different; A interacted mostly with van der Waals interactions and hydrogen bonds, but the most important forces for B was hydrophobic interactions. According to docking results, both complexes prefer the domain III of BLC, but B has higher affinity toward BLC than A, which supports the results of spectroscopic and FMO analysis.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Review
Chemistry, Inorganic & Nuclear
Manoj Kumar, Atresh Kumar Singh, Alok Kumar Singh, Rajesh K. Yadav, Satyam Singh, Atul P. Singh, Amit Chauhan
Summary: Schiff bases have been widely studied in coordination chemistry for their reactivity and adaptable metal complexes. They have numerous applications in various fields, including catalysis, material science, and bioinorganic chemistry. This review focuses on Schiff bases derived from salicylaldehyde and their derivatives, with a specific emphasis on their synthesis, characterization, and applications in metal complexes. The article provides important knowledge for researchers in this field and encourages further research in Schiff base complexes.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
A. Salomanravi, P. Muthuselvan, Francisxavier Paularokiadoss, Thayalaraj Christopher Jeyakumar
Summary: A new Schiff base ligand was synthesized and complexed with Copper (II), Nickel (II) and Vanadyl (IV) metal ions. The structures of the synthesized ligand and metal complexes were analyzed using spectroscopic techniques. The antibacterial activity of the metal complexes was tested against several bacterial species, and the Ni(II) complex showed better activity than the others. In vitro antioxidant activity testing also showed that the Ni(II) complex had higher activity compared to the ligand and other metal complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Applied
Hany M. Abd El-Lateef, Ahmad Desoky M. Mohamad, Mohamed R. Shehata, Ahmed M. Abu-Dief
Summary: Two new azomethine chelates for Fe3+ ions were prepared and their corrosion inhibiting properties were studied. The structures of the compounds were analyzed using various spectroscopic and physicochemical techniques, and their performance as corrosion protective films was investigated using experimental and theoretical methods. The synthesized compounds exhibited high inhibition efficiency and followed the Langmuir model.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
M. Bencela, S. Sudha Kumari
Summary: A series of Ni, Cu, and Co complexes were synthesized and characterized by elemental analysis, spectroscopy, magnetic susceptibility tests, and thermal analysis. The complexes exhibited different geometries and showed either ferromagnetic or antiferromagnetic interactions. Furthermore, the complexes demonstrated antimicrobial activity against both fungi and bacteria.
Article
Chemistry, Inorganic & Nuclear
M. M. El-Zahed, A. Z. El-Sonbati, F. M. S. Ajadain, M. A. Diab, M. I. Abou-Dobara
Summary: In this study, a novel symmetric bis-Schiff base (H2L) was synthesized and its structure was determined using various spectral and physicochemical techniques. The synthesized compounds were found to have octahedral geometry, except for one which had a tetrahedral structure. Additionally, one of the complexes (5) exhibited the highest antibacterial activity among the ligand, complexes, and standard antibiotic.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Camila Bignardi, Larissa F. Oliveira, Naralyne M. Pesqueira, Beatriz A. Riga-Rocha, Antonio E. H. Machado, Valdemiro P. Carvalho-Jr, Beatriz E. Goi
Summary: Three new cobalt(II) complexes with non-symmetrically-substituted N2O2 tetradentate Schiff-base ligands were synthesized and used as controlling agents for the polymerization of n-butyl acrylate photoinitiated by TPO. Complex 1 showed the best control over molecular weight and dispersity, indicating good performance in the OMRP process. Kinetic and computational studies support activation/deactivation equilibrium exerted by complexes 1-3 via reversible termination mechanism.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Grzegorz Romanowski, Justyna Budka, Iwona Inkielewicz-Stepniak
Summary: New oxidovanadium(V) complexes and cis-dioxidomolybdenum(VI) complexes with chiral Schiff bases were characterized and studied for their catalytic, cytotoxic, and cytoprotective activities. The oxidovanadium(V) complexes showed higher cytotoxicity and no cytoprotective ability against H2O2-induced cytotoxicity.
Article
Biochemistry & Molecular Biology
Aleksandar Mijatovic, Nevenka Gligorijevic, Dusan Cocic, Snezana Spasic, Aleksandar Lolic, Sandra Arandelovic, Milan Nikolic, Rada Baosic
Summary: The biological activity of six structurally similar tetradentate Schiff base copper(II) complexes was investigated. One of the complexes, CuAA, showed superior antioxidant activity than Trolox, as well as antimicrobial, antifungal, and antiproliferative properties. The complexes also interacted with human serum albumin and DNA fragments.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Svetlana V. Gutorova, Petr I. Matveev, Pavel S. Lemport, Daniil A. Novichkov, Igor P. Gloriozov, Nane A. Avagyan, Alexey O. Gudovannyy, Yulia V. Nelyubina, Vitaly A. Roznyatovsky, Vladimir G. Petrov, Konstantin A. Lyssenko, Yuri A. Ustynyuk, Stepan N. Kalmykov, Valentine G. Nenajdenko
Summary: Phenanthroline diamides (L) have the unique ability to extract uranium from nitric acid solutions and form 1:2 stoichiometry complexes as tight ion pairs {[UO2LNO3]+[UO2(NO3)3]-} in a polar organic solvent. This extraction mechanism combines solvation and ion-pair anion exchange, and was confirmed by UV-vis study and chemical synthesis. The structure of the complexes in the solid state was unambiguously determined through chemical synthesis and single crystal growth.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Rain Ng, Wai-Ming Ng, Wai-Man Cheung, Herman H. -Y. Sung, Ian D. Williams, Wa-Hung Leung
Summary: A nitrido-bridged heterometallic iron(IV) chloride complex supported by a tetradentate Schiff base ligand has been synthesized and its chloride substitution reactions have been studied. The complex exhibits short Fe-N(nitrido) and Ru-N(nitrido) distances, indicating Fe(IV)=N=Ru(IV) bonding.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Mervette. El Batouti, E. H. El-Mossalamy, H. A. Fetouh
Summary: The work focuses on the preparation and characterization of new optically active charge transfer complexes (CTC) that can harvest weak infra-red photons emitted from sunlight and convert waste heat into useful work. The innovation lies in the development of materials that absorb in the infrared range and have good thermal conductivity. The results have significant impact in material science and academic research.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Biophysics
Somaye Shahraki
Summary: Extensive research has been conducted on traditional homogeneous metal catalysts and enzymatic catalysts. However, a new type of hybrid catalyst called synthetic metalloenzymes has recently gained attention. Combining the properties of both homogeneous and enzymatic catalysts, metalloenzymes demonstrate added value such as enantioselectivity or chemo-selectivity. This review focuses on Schiff base complexes, which act as either homogeneous artificial enzymes or contribute to the structure of host in the preparation of hybrid metalloenzymes. The details of hybrid catalysts are crucial for advancements in catalysis, as this approach can be applied to various bio- or synthetic host and guest coordination complexes.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Polymer Science
Kazuki Tada, Chiaki Ikegaki, Yuki Fuse, Kazuki Tateishi, Hiromitsu Sogawa, Fumio Sanda
Summary: The polycondensation reaction of N-((3,5-diamino)benzoyl)-L-alanine dodecyl ester (1L) with p-phthalaldehyde (2) resulted in the synthesis of a novel optically active polymer, poly(1L-2), containing Schiff base moieties in the main chain. Similar polymers with Schiff base moieties were also synthesized by varying the feed ratios of N-((3,5-diamino) benzoyl)-D-alanine dodecyl ester (1D) and N-((3,5-diamino)benzoyl)glycine dodecyl ester (1G). These polymers exhibited chiral CD signals in CHCl3 solvent, dependent on the molar ratios of 1L/1D and 1L/1G. Poly(1L-2) showed lyotropic liquid crystallinity in CHCl3 and THF solvents.
Review
Chemistry, Physical
Dariusz Osypiuk, Agata Bartyzel, Beata Cristovao
Summary: The aim of this study was to synthesize and characterize new Zn-II complexes with different Schiff bases. The synthesized complexes showed stable polycrystalline structures and their coordination modes with zinc ions were determined by FTIR spectroscopy. The thermal analysis revealed that the decomposition of these complexes occurred in multiple stages, depending on the Schiff base ligands and the atmosphere. Additionally, the antioxidant activities of the complexes were evaluated, showing enhanced or comparable activity compared to the free Schiff bases when complexed with zinc ions. Rating: 7.5/10
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Alagarraj Arunadevi, Rajakkani Paulpandiyan, Natarajan Raman
JOURNAL OF MOLECULAR LIQUIDS
(2017)
Article
Chemistry, Physical
Ponnukalai Ponya Utthra, Ganesan Kumaravel, Natarajan Raman
JOURNAL OF MOLECULAR STRUCTURE
(2017)
Article
Materials Science, Biomaterials
Ganesan Kumaravel, Natarajan Raman
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2017)
Article
Chemistry, Inorganic & Nuclear
Seemon Packianathan, Ponnukalai Ponya Utthra, Natarajan Raman, Liviu Mitu
INORGANIC AND NANO-METAL CHEMISTRY
(2017)
Article
Chemistry, Applied
Alagarraj Arunadevi, Natarajan Raman
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Chemistry, Applied
Alagarraj Arunadevi, Rajakkani Paulpandiyan, Natarajan Raman
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Biochemistry & Molecular Biology
Ganesan Kumaravel, Ponnukalai Ponya Utthra, Natarajan Raman
BIOORGANIC CHEMISTRY
(2018)
Article
Biochemistry & Molecular Biology
Ganesan Kumaravel, Ponya Utthra Ponnukalai, Dharmasivam Mahendiran, Natarajan Raman
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2019)
Article
Chemistry, Inorganic & Nuclear
Michael Samuel, Rajamanickam Rajasekar, Porkodi Jeyaraman, Selvaganapathy Muthusamy, Vellaichamy Muniyandi, Natarajan Raman
Summary: The study describes the synthesis of novel Knoevenagel condensed copper(II) complexes from Schiff bases of thiosemicarbazide derivatives, characterized using analytical and spectral techniques. DFT calculations confirmed the stability and biological approachability of these compounds, with pharmacokinetic properties suggesting oral administration and intercalative binding with CTDNA.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Samuel Michael, Porkodi Jeyaraman, Bhuvaneswari Marimuthu, Rajamanickam Rajasekar, Radha Thanasamy, Karuppiah Arunsunai Kumar, Natarajan Raman
Summary: Novel Cu(II) and Zn(II) complexes [ML(dppz)]Cl2, where L is Schiff bases derived from the condensation of (E)-3-(2-mercaptovinyl)-pentane-2,4-dione and para-substituted anilines, were successfully synthesized and characterized. These complexes exhibited monomeric and cationic properties with square-planar geometry. The compounds showed strong DNA nuclease activity via intercalative binding mechanism, with [CuL1(dppz)]Cl2 demonstrating the highest binding efficacy among all the complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Karuppaiya Palpandi, Chellapandi Bhuvaneswari, Sundaram Ganesh Babu, Natarajan Raman
Summary: A novel metal stannate (Mn2SnO4) nanocube electrocatalyst with outstanding sensing capability and electrochemical properties was synthesized using an ultrasonic-assisted technique. The electrocatalyst exhibited higher cathodic current response, lower detection limit, and good sensitivity for the determination of chloramphenicol.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Karuppaiya Palpandi, Natarajan Raman
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Applied
Natarajan Raman, Thiravidamani Chandrasekar, Ganesan Kumaravel, Liviu Mitu
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Chemistry, Applied
Ganesan Kumaravel, Ponnukalai Ponya Utthra, Natarajan Raman
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Chemistry, Applied
Jeyaraman Porkodi, Natarajan Raman
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)