Review
Polymer Science
Swati Bugalia, Yogpal Dhayal, Harshita Sachdeva, Sushama Kumari, Krishna Atal, Urmila Phageria, Pooja Saini, Om Prakash Gurjar
Summary: The role of synthetic coordination chemistry in pharmaceutical science is becoming increasingly important due to its various applications in this field. This review focuses on the synthesis, characterization, and pharmaceutical applications of macrocyclic complexes of transition metal ions containing isatin and its derivatives as ligand precursors. Isatin is a versatile compound that can be obtained from marine animals, plants, and mammalian tissues. It has a wide range of biological and pharmacological activities, making it a valuable component in drug design and synthesis. The review provides detailed information on the latest methods for the synthesis of isatin-based macrocyclic complexes and their applications in medicinal chemistry.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Magdalena Barwiolek, Dominika Jankowska, Anna Kaczmarek-Kedziera, Iwona Lakomska, Jedrzej Kobylarczyk, Robert Podgajny, Pawel Popielarski, Joanna Masternak, Maciej Witwicki, Tadeusz M. Muziol
Summary: Two dinuclear copper(II) complexes with macrocyclic Schiff bases were prepared and characterized. The crystal structures and geometry of the complexes were confirmed by X-ray crystal structure determination and DFT calculations. The complexes showed strong antiferromagnetic Cu-II-Cu-II exchange interactions and exhibited luminescent properties. Thin materials of the complexes were deposited on Si(111) and showed high fluorescence intensity, indicating their potential use in optical devices.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Mohamad M. E. Shakdofa, Quad M. Selim, Adel M. E. Shakdofa
Summary: Uni-metallic complexes of Ru3+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+ derived from dihydrazone synthesized by condensation of 3-hydrazonoindolin-2-one with 4-formyl antipyrine were structurally characterized and analyzed using spectroscopic tools and Density Functional Theory calculations. The compounds exhibit large reactivity with small HOMO-LUMO gap, and Cu2+ and Zn2+ complexes showed good antibacterial activity compared to the free dihydrazone, as confirmed by in-vitro evaluation against various bacteria strains.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Applied
Nikita R. Romanenko, Maxim A. Faraonov, Maxim V. Mikhailenko, Alexey V. Kuzmin, Salavat S. Khasanov, Akihiro Otsuka, Hideki Yamochi, Hiroshi Kitagawa, Dmitri V. Konarev
Summary: The reduction of organic dye flavanthrone (Vat Yellow 1) in the presence of metal-containing compounds leads to the formation of coordination complexes, where metal fragments coordinate to flavanthrone dianions via short M - O bonds. These complexes display various bond lengths and magnetic properties depending on the metal in the system. Overall, this study highlights the potential of organic dye dianions as bidentate ligands for coordination complexes with paramagnetic metal ions.
Article
Chemistry, Inorganic & Nuclear
Jonatan B. Petersen, You-Song Ding, Sandeep Gupta, Aditya Borah, Eric J. L. McInnes, Yan-Zhen Zheng, Ramaswamy Murugavel, Richard E. P. Winpenny
Summary: In this study, the zero-field splitting (ZFS) of Gd3+ pentagonal bipyramidal complexes was investigated to understand the mechanisms of ground state splitting. The results showed that the ZFS is dominated by the B20 term, which is inversely proportional to the donor strength of the axial ligands. Additionally, the magnitude of B20 was found to be inversely proportional to the thermal barrier for the reversal of the magnetic moment of the corresponding isostructural Dy3+ complexes.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Diego Plaza-Lozano, David Ramirez-Palma, Alberto Vela, Juan Olguin
Summary: In this study, two different types of heterocycles embedded with thione functional group were synthesized, and the effect of these thione-containing ligands on the magnetic properties of iron(II) octahedral complexes was investigated. The results showed that the structure and electronic parameters of the thione ligands play a crucial role in determining the magnetic properties of the metal complexes.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ehab M. Zayed, Hayam A. Abd ElSallam, Maha I. Fathala, Farid M. Sroor
Summary: Mixed ligand complexes (L1L2) of Mn(II), Cu(II), and Cd(II) were synthesized and characterized using various analytical techniques. The structural properties of these complexes were investigated, and they were found to have octahedral molecular geometry. The antibacterial properties of the complexes were evaluated and compared with the organic ligands. Molecular docking analysis showed positive interaction with crystal structures of the tested bacteria.
Article
Infectious Diseases
Iram Irfan, Asghar Ali, Bharati Reddi, Mohd Abrar Khan, Phool Hasan, Sarfraz Ahmed, Amad Uddin, Magdalena Piatek, Kevin Kavanagh, Qazi Mohd Rizwanul Haque, Shailja Singh, Anthony Addlagatta, Mohammad Abid
Summary: In this study, compound PS9 was identified as a potent and selective inhibitor of bacterial MetAPs. It exhibited antibacterial potential against Gram-positive and Gram-negative bacterial strains, and showed synergistic effects when combined with ampicillin and ciprofloxacin. PS9 also inhibited the growth of multidrug-resistant environmental isolates and showed no significant cytotoxic effect on human cells. The study suggests that PS9 could be a useful candidate for the development of antibacterial alternatives.
Article
Chemistry, Multidisciplinary
Wen-Jun Xie, Jin-Mei Chen, Zhi-Wen Yang, Liang-Nian He
Summary: A novel molecular catalyst, cobalt 5,15-diazaporphyrin, was developed and immobilized onto carbon nanotubes for highly efficient electrocatalytic CO2 reduction to CO. The catalyst exhibited a faradaic efficiency above 99% at -0.7 V and -0.8 V versus a reversible hydrogen electrode. The decrease in electronegative nitrogen atoms at the meso position effectively increased the electron density of the central metal, facilitating the reaction with Lewis acid CO2.
Article
Chemistry, Multidisciplinary
M. Ali, Essam Nageh Sholkamy, Ahmed S. Alobaidi, Muhanna K. Al-Muhanna, Assem Barakat
Summary: Schiff bases of chitosan were prepared using thermal and ultrasound approaches and confirmed by FT-IR, XRD, and TGA. The CS Schiff bases showed better thermal stability than pure CS and exhibited high antimicrobial activity against +ve Gram bacteria and -ve Gram bacteria.
Article
Chemistry, Inorganic & Nuclear
Rajeh Alotaibi, Amy Booth, Edmund Little, Adam Brookfield, Amritroop Achari, Selena J. Lockyer, Grigore A. Timco, George F. S. Whitehead, Inigo J. Vitorica-Yrezabal, Nicholas F. Chilton, Rahul R. Nair, David Collison, Richard E. P. Winpenny
Summary: We synthesized and characterized a series of heterometallic rings using alkylammonium or imidazolium cations as templates. The structure of these rings can be controlled by the template and the coordination geometry preference of each metal, resulting in rings with eight, nine, ten, twelve, and fourteen metals. The compounds were analyzed using various techniques, including X-ray diffraction, elemental analysis, magnetometry, and EPR measurements. The magnetic measurements showed antiferromagnetic exchange coupling between the metal centers, while the EPR spectroscopy revealed different ground and excited states for different ring structures. These findings provide insights into the transferability of magnetic parameters among related compounds.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Richa Mishra, Himani Chaurasia, Vishal K. Singh, Farha Naaz, Ramendra K. Singh
Summary: A new series of novel Schiff bases have been synthesized and tested for their antimicrobial and antifungal activities, showing promising potential for future applications. The combination of test compounds with established antibiotics led to significantly enhanced potency, while molecular modeling indicated good interactions within the active site of the target enzyme. ADMET protocol predicted favorable properties for intestinal absorption, oral bioavailability and cell permeation of the test compounds.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Ibraheem O. Ali, Hesham S. Nassar, Karam S. El-Nasser, Abdelkader Bougarech, Majdi Abid, Ahmed A. Elhenawy
Summary: A suitable process for modifying PVA with nicotinic acid to generate a graft polymer was developed, and the coordination of this copolymer with metal ions was confirmed through spectroscopic analysis. Quantum chemical calculations revealed charge transfer from metal to ligands, indicating higher NLO properties for these polymers.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Ira Litvak, Haim Cohen, Yaakov Anker, Sharon Ruthstein
Summary: This study investigated the impact of nitrogen contamination on paramagnetic centers in diamonds using EPR spectroscopy. It found a correlation between nitrogen concentration and spin concentrations, as well as valid hyperfine interaction anisotropy for pretreated colored diamonds.
Article
Chemistry, Inorganic & Nuclear
Ashley J. Schuman, Adharsh Raghavan, Susannah D. Banziger, You Song, Zhao-Bo Hu, Brandon L. Mash, Andrew L. Williams, Tong Ren
Summary: This study presents the synthesis and characterization of Cr-III(HMC) catecholate and semiquinonate complexes, along with their structural, electrochemical, spectroscopic, and magnetic properties. The reversible oxidation of catecholate and strong antiferromagnetic coupling in the semiquinonate complex were observed. Additionally, density functional theory analysis revealed differences in the electronic structures of the complexes.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
C. P. Kaushik, Krishan Kumar, Balasubramanian Narasimhan, Dharmendra Singh, Pradeep Kumar, Ashima Pahwa
MONATSHEFTE FUR CHEMIE
(2017)
Article
Environmental Sciences
Alok Kumar Pandey, Amit Kumar Mishra, Ritesh Kumar, Shivesh Berwal, Rakhesh Devadas, Alfredo Huete, Krishan Kumar
ENVIRONMENTAL POLLUTION
(2017)
Article
Chemistry, Multidisciplinary
Chander Prakash Kaushik, Krishan Kumar, Devinder Kumar, Satbir Mor, Ashwani Kumar, Deepak Kumar Jindal
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Organic
C. P. Kaushik, Ashima Pahwa, Ashwani Kumar, Dharmendra Singh, Krishan Kumar
SYNTHETIC COMMUNICATIONS
(2017)
Article
Environmental Sciences
Amit Kumar, Deepak Singh, Kumar Anandam, Krishan Kumar, Vinod Kumar Jain
AIR QUALITY ATMOSPHERE AND HEALTH
(2017)
Article
Chemistry, Organic
C. P. Kaushik, Ashima Pahwa, Devinder Kumar, Ashwani Kumar, Dharmendra Singh, Krishan Kumar, Raj Luxmi
JOURNAL OF HETEROCYCLIC CHEMISTRY
(2018)
Article
Environmental Sciences
Amit Kumar, Deepak Singh, Krishan Kumar, Braj Bihari Singh, Vinod Kumar Jain
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Article
Chemistry, Organic
C. P. Kaushik, Raj Luxmi, Mukesh Kumar, Dharmendra Singh, Krishan Kumar, Ashima Pahwa
SYNTHETIC COMMUNICATIONS
(2019)
Article
Acoustics
Manoj Singh, Akash Jaiswal, Yashmita Ulman, Krishan Kumar
ACTA ACUSTICA UNITED WITH ACUSTICA
(2019)
Article
Biodiversity Conservation
Ram Pravesh Kumar, Prabhat Kashyap, Ritesh Kumar, Alok Kumar Pandey, Amit Kumar, Krishan Kumar
HUMAN AND ECOLOGICAL RISK ASSESSMENT
(2020)
Review
Chemistry, Organic
Chander P. Kaushik, Jyoti Sangwan, Raj Luxmi, Krishan Kumar, Ashima Pahwa
CURRENT ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
C. P. Kaushik, Ashima Pahwa, Dharmendra Singh, Krishan Kumar, Raj Luxmi
MONATSHEFTE FUR CHEMIE
(2019)
Article
Environmental Sciences
Prabhat Kashyap, Amit Kumar, Ram Pravesh Kumar, Krishan Kumar
ATMOSPHERIC POLLUTION RESEARCH
(2019)
Proceedings Paper
Environmental Sciences
Priyanka Kumari, Purnima Bhardwaj, Alok Kumar Pandey, Krishan Kumar, V. K. Jain
REMOTE SENSING TECHNOLOGIES AND APPLICATIONS IN URBAN ENVIRONMENTS III
(2018)
Proceedings Paper
Environmental Sciences
Purnima Bhardwaj, Alok Kumar Pandey, Krishan Kumar, V. K. Jain
REMOTE SENSING TECHNOLOGIES AND APPLICATIONS IN URBAN ENVIRONMENTS II
(2017)
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)