Engineered CuO nanoparticles: A multifunctional platform for corrosion resistance, photocatalysis, and antibacterial activity Parul Parul, Harish Kumar, Devender Singh, Ramesh Kumar, Sohan Lal, Parvin Kumar Next Nanotechnology, 2026 The CuO nanoparticles (NPs) were synthesized using a facile Sol-gel method. Characterization was performed using FTIR, UV–visible spectroscopy, XRD, AFM, and SEM techniques. Both XRD and SEM analyses indicate an average particle size ranging between 25 and 30 nm. CuO NPs provide 98.7% corrosion inhibition efficiency at a concentration of 100 ppm for Al sheet in 0.5 M HCl solution. Antibacterial activity was tested against Gram-negative bacteria E. coli and Gram-positive bacterium S. aureus and compared with six standard antibiotics (hexa disk) No antibacterial activity was seen against E. coli . The NPs exhibited an inhibitory zone of 17 mm towards S. aureus . NPs show an indirect band gap of 2.31 eV. Non-linear relationship between change in weight and magnetic field suggests presence of complex magnetic interactions within NPs. NPs exhibit high photocatalytic activity (80%) towards Methylene Blue dye under UV light. With enhanced photocatalytic, magnetic, antibacterial, and anticorrosive qualities, CuO NPs are proven to be multifunctional nanomaterials.
Synthesis, Characterization, and Photometric Studies of Tb(III) Complexes With 6-Ethyl-4-oxo-4H-1-benzopyran-3-carboxaldehyde and Auxiliary Ligands Ritu Langyan, Shagun Chaudhary, Raj Kamal, Parvin Kumar Chemistryselect, 2026 Strategic ligand design continues to play a critical role in optimizing the photophysical behavior of lanthanide complexes for functional materials applications. In this work, a new series of green‐emitting Tb(III) complexes was synthesized using a chromone‐derived primary ligand, 6‐ethyl‐4‐oxo‐4 H ‐1‐benzopyran‐3‐carboxaldehyde. The coordination environment of the complexes was systematically modulated by introducing various N , N ′‐donor auxiliary ligands, including bathophenanthroline, 1,10‐phenanthroline, and 2,2′‐bipyridine, to enhance their luminescent performance. The complexes were comprehensively characterized by FTIR, CHN, PXRD, UV–vis, PL, and TGA. FTIR, CHN, and UV–vis measurements confirmed complex formation and ligand coordination. Sharp peaks in x‐ray diffractograms suggest their crystalline nature. All complexes exhibited the characteristic sharp 5 D 4 → 7 F J ( J = 6–3) transitions, with emission peaks at approx. 491, 547, 587, and 623 nm corresponding to the dominant green 5 D 4 → 7 F 5 transition. Among these, the bipyridine‐containing complex (Tb4) displayed the highest quantum yield (66.20%) and an extended emission lifetime (0.67 ms), attributed to efficient energy transfer and minimized non‐radiative decay. TGA confirmed good thermal stability, with decomposition temperatures above 200°C. These findings highlight the importance of ligand architecture and coordination geometry in tuning the optical and thermal properties of Tb(III) complexes for advanced photonic and solid‐state lighting technologies.
3-Aryl-1-phenyl-1H-pyrazole derivatives as new multitarget directed ligands for the treatment of Alzheimer's disease, with acetylcholinesterase and monoamine oxidase inhibitory properties Excli Journal, 2013
An environmentally benign and solvent-free synthesis of3-aryl-[l,2, 41triazolo[4,3-a]pyridines andl-aryl-5-methyl-[l,2,4]triazolo[4,3-a]quinolines using phenyliodine bis(trifluoro acetate) or iodobenzene diacetate Khimiya Geterotsiklicheskikh Soedinenii, 2011
Synthesis and antimicrobial activity of 2-[1-phenyl-3-arylpyrazol-4-yl]benzothiazolines Der Pharma Chemica, 2011
Condensed bridgehead nitrogen heterocyclic systems: Synthesis and evaluation of biological activity of thiazolo [3′, 2′:2,3]-as- triazino [5,6-b] indoles and isomeric thiazolo [2′,3′:3,4] as-triazino [5,6-b] indoles Indian Journal of Heterocyclic Chemistry, 2007
Heterocyclic systems containing bridgehead nitrogen atom: Synthesis and biological activity of s-triazolo [3,4-b] [1,3,4] thiadiazoles, s-triazolo [3,4-b] [1,3,4] thiadiazines and s-triazolo [3′, 4′: 2,3] thiadiazino [5,6-b] quinoxaline Indian Journal of Heterocyclic Chemistry, 2007
Condensed bridgehead nitrogen heterocyclic systems: Synthesis, stereochemistry and bioactivity of pyrazolo [3′, 4′:4,5] thiazolo [3,2-b] s-triazoles Indian Journal of Heterocyclic Chemistry, 2006
Bridgehead nitrogen heterocyclic systems: Facile synthesis and antimicrobial activity of thiadiazolo [2′,3′-2,1] imidazo [4,5-b] quinoxaline and imidazo [2,1-b]-1,3,4-thiadiazoles Indian Journal of Heterocyclic Chemistry, 2006
An efficient one pot synthesis of 3-(1-naphthyl) and 4-methyl-3-(1- naphthyl) coumarins using phase transfer catalyst Indian Journal of Heterocyclic Chemistry, 2006
Heterocyclic systems containing bridgehead nitrogen atoms: Synthesis, stereochemistry and bio-activity of C/S-3,3a-imidazo [2,1-a] pyrazolo [3,4-d] thiazoles Indian Journal of Heterocyclic Chemistry, 2005
Condensed bridgehead nitrogen heterocyclic systems: Synthesis, bioactivity and stereochemistry of pyrazolo [3′,4′:4,5] thiazolo [3,2-b]-s-triazoles Indian Journal of Heterocyclic Chemistry, 2003
RECENT SCHOLAR PUBLICATIONS
A complete perspective on lanthanide coordination complexes: Fundamentals, mechanisms and applications V Aggarwal, S Dalal, S Malik, D Singh, J Sindhu, S Kumar, RS Malik, ... Coordination Chemistry Reviews 562 (1), 217948 , 2026 2026
Structure–property correlations in terbium complexes: Influence of 1,10-phenanthroline substituents and fluorinated β-diketones on green emission S Redhu, D Singh, K Nehra, A Hooda, S Kumar, RS Malik, P Kumar, ... Dyes and Pigments 249, 113620 , 2026 2026 Citations: 1
Structure–property relationships in Orange–red emissive samarium(III) complexes incorporating fluorinated β-diketones and functionalised bipyridine ligands S Redhu, D Singh, A Hooda, A Dalal, R Dhankhar, S Kumar, RS Malik, ... Polyhedron 294, 118191 , 2026 2026
Tailoring photoluminescence in Sm(III) β-Diketonates: Impact of Heteroaryl substitution on optical and electronic behavior V Aggarwal, D Singh, S Malik, S Redhu, S Kumar, RS Malik, P Kumar, ... Polyhedron 291, 118088 , 2026 2026 Citations: 1
Fabrication, structural, elucidation and biological evaluation of bioactive macrocyclic complexes through in-vitro and in-silico approaches J Kumar, R Kumar, D Singh, H Kumar, S Kumar, A Jangra, S Kumar, ... Journal of Coordination Chemistry, https://doi.org/10.1080/00958972.2026.26 , 2026 2026
From mononuclear to pyrazine-bridged dinuclear samarium(iii) complexes: role of fluxidentate coordination in luminescent and thermal behavior V Aggarwal, D Singh, S Dalal, S Bhagwana, S Kumar, RS Malik, P Kumar, ... RSC Advances 16 (4), 21639-21654 , 2026 2026 Citations: 1
DFT-Assisted Optical Emission Analysis of Green Luminescent Terbium(III) Mononuclear Complexes with BPTD and N-Donor Chelates S Dalal, D Singh, V Aggarwal, A Hooda, V Nishal, S Kumar, RS Malik, ... Journal of Fluorescence, https://doi.org/10.1007/s10895-026-04768 , 2026 2026
Judd–Ofelt analyses and luminescence behavior of visible emitting trivalent Eu (III) complexes synthesized from 1-(4-bromophenyl)-4,4,4-trifluorobutane-1,3-dione and distinct … RSMPK Swati Dalal, Devender Singh, Vandana Aggarwal, Sofia Malik, Anuj Dalal ... Emergent Materials 9, 82 , 2026 2026
Viscosity-sensitive NIR probe for detecting cellular state transitions in Normal, Cancer and apoptotic cells Kiran, A Ranolia, Priyanka, L Narayan, H Elrewey, M Wahajuddin, ... Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 350, 127430 , 2026 2026 Citations: 2
Synthesis and characterization of near-white luminescent Tb(III) β-diketonates for potential OLED applications: Influence of neutral co-ligands on optical and electronic properties V Aggarwal, D Singh, P Kumar, A Hooda, S Malik, J Sindhu, P Kumar, ... Journal of Molecular Structure 1355, 145049 , 2026 2026 Citations: 2
Regioselective synthesis, structural investigation and binding behavior of 6-aroyl-7-aryl-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidines with BSA using various … R Aggarwal, M Sharma, G Sumran, S Kumar, P Kumar RSC Advances 16, 13454-13470 , 2026 2026
Regioselective synthesis, structural investigation and binding behavior of 6-aroyl-7-aryl-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidines with BSA using various … R Aggarwal, M Sharma, G Sumran, S Kumar, P Kumar RSC Advances 16 (15), 13454-13470 , 2026 2026
Synthesis, Characterization, and Photometric Studies of Tb(III) Complexes With 6‐Ethyl‐4‐oxo‐4H‐1‐benzopyran‐3‐carboxaldehyde and Auxiliary Ligands R Langyan, S Chaudhary, R Kamal, P Kumar ChemistrySelect 11 (10), e07517 , 2026 2026
UV-induced near-white visible emission in dinuclear Tb(iii) complexes: a photophysical, theoretical and computational study on fluxidentate ligand bridging and coordination … V Aggarwal, D Singh, V Nishal, A Dalal, S Kumar, RS Malik, P Kumar, ... Materials Advances 7 (4), 2481-2498 , 2026 2026
UV-induced near-white visible emission in dinuclear Tb(III) complexes: a photophysical, theoretical and computational study on fluxidentate ligand bridging and coordination … V Aggarwal, D Singh, V Nishal, A Dalal, S Kumar, RS Malik, P Kumar, ... Materials Advances, DOI https://doi.org/10.1039/D5MA01145K , 2026 2026
Samarium(III) complexes as potential orange-red light emitters: A comprehensive study on the influence of coordination environment S Malik, K Jakhar, D Singh, S Dalal, S Redhu, S Kumar, P Kumar, ... Journal of Molecular Structure 1349, 143870 , 2026 2026 Citations: 1
Advancements in carbon capture and utilization technologies: Transforming CO2 into valuable resources for a sustainable carbon economy H Kumar, R Sharma, AK Malik, AK Sharma, P Kumar, D Singh Next Energy 10, 100476 , 2026 2026 Citations: 14
Fluorinated analogues of β-diketone based samarium complexes: Photophysical properties and role of N-donor secondary ligands S Dalal, D Singh, S Redhu, K Nehra, V Nishal, S Kumar, P Kumar, ... Journal of Molecular Structure 1347, 143275 , 2025 2025 Citations: 3
Highly emissive dinuclear europium(iii) complex with heteroaryl β-diketone and fluxidentate pyrazine: dual role as UV converters and semiconductors V Aggarwal, D Singh, S Malik, S Bhagwan, S Kumar, RS Malik, P Kumar, ... RSC Advances 15 (52), 44102–44115 , 2025 2025 Citations: 4
Pyrazine-driven dinuclear assembly of dysprosium(iii) β-diketonate complex: a fluxidentate bridging approach toward functional near-white luminescent materials V Aggarwal, D Singh, S Redhu, S Bhagwan, S Kumar, RS Malik, P Kumar, ... RSC Advances 15, 49227-49242 , 2025 2025 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
Progress and challenges in electrochemical energy storage devices: Fabrication, electrode material, and economic aspects R Sharma, H Kumar, G Kumar, S Sharma, R Aneja, AK Sharma, R Kumar, ... Chemical engineering journal 468, 143706 , 2023 2023 Citations: 320
Developments in conducting polymer-, metal oxide-, and carbon nanotube-based composite electrode materials for supercapacitors: a review A Tundwal, H Kumar, BJ Binoj, R Sharma, G Kumar, R Kumari, A Dhayal, ... RSC Advances 14, 9406 , 2024 2024 Citations: 227
Luminous lanthanide diketonates: Review on synthesis and optoelectronic characterizations A Dalal, K Nehra, A Hooda, D Singh, P Kumar, S Kumar, RS Malik, ... inorganica chimica acta, 121406 , 2023 2023 Citations: 99
Design, synthesis, conformational and molecular docking study of some novel acyl hydrazone based molecular hybrids as antimalarial and antimicrobial agents P Kumar, K Kadyan, M Duhan, J Sindhu, V Singh, BS Saharan Chemistry Central Journal 115 (11) , 2017 2017 Citations: 94
Preparation and optical investigation of green luminescent ternary terbium complexes with aromatic β-diketone A Hooda, A Dalal, K Nehra, D Singh, S Kumar, RS Malik, P Kumar Chemical Physics Letters 794, 139495 , 2022 2022 Citations: 78
Synthesis of novel inhibitors of α-amylase based on the thiazolidine-4-one skeleton containing a pyrazole moiety and their configurational studies P Kumar, M Duhan, K Kadyan, J Sindhu, S Kumar, H Sharma MedChemComm 8 (7), 1468-1476 , 2017 2017 Citations: 78
Design and development of novel focal adhesion kinase (FAK) inhibitors using Monte Carlo method with index of ideality of correlation to validate QSAR P Kumar, A Kumar, J Sindhu SAR and QSAR in Environmental Research 30 (02), 63-80 , 2019 2019 Citations: 72
Monoamine oxidase inhibitors: A concise review with special emphasis on structure activity relationship studies Bhawna, A Kumar, M Bhatia, A Kapoor, P Kumar, S Kumar European Journal of Medicinal Chemistry 242, 114655 , 2022 2022 Citations: 71
Synthesis, molecular docking and QSAR study of thiazole clubbed pyrazole hybrid as α-amylase inhibitor M Duhan, R Singh, M Devi, J Sindhu, R Bhatia, A Kumar, P Kumar Journal of Biomolecular Structure and Dynamics , 2021 2021 Citations: 70
A review of antimalarial activity of two or three nitrogen atoms containing heterocyclic compounds A Chugh, A Kumar, A Verma, S Kumar, P Kumar Medicinal Chemistry Research 29, 1723–1750 , 2020 2020 Citations: 69
Design and Development of COX-II Inhibitors: Current Scenario and Future Perspective S Chahal, P Rani, J Sindhu, G Joshi, A Ganesan, S Kalyaanamoorthy, ... ACS Omega 8 (20), 17446–17498 , 2023 2023 Citations: 68
Luminous terbium and samarium complexes with diacetylmethane and substituted 1,10-phenanthroline derivatives for display applications: Preparation and optoelectronic investigations K Nehra, A Dalal, A Hooda, P Kumar, D Singh, S Kumar, RS Malik, ... Journal of Luminescence 249, 119032 , 2022 2022 Citations: 67
Conducting polymers and carbon nanotubes in the field of environmental remediation: Sustainable developments A Tundwal, H Kumar, BJ Binoj, R Sharma, R Kumari, A Yadav, G Kumar, ... Coordination Chemistry Reviews 500, 215533 , 2024 2024 Citations: 64
CORAL: QSAR models of CB1 cannabinoid receptor inhibitors based on local and global SMILES attributes with the index of ideality of correlation and the correlation … P Kumar, A Kumar Chemometrics and Intelligent Laboratory Systems 200, 103982 , 2020 2020 Citations: 61
Highly efficient green corrosion inhibitor for mild steel in sulfuric acid: Experimental and DFT approach H Kumar, P Yadav, R Kumari, R Sharma, S Sharma, D Singh, H Dahiya, ... Colloids and Surfaces A: Physicochemical and Engineering Aspects 675, 132039 , 2023 2023 Citations: 57
Red luminous Eu(III) complexes: Preparation, spectral, optical and theoretical evaluation K Nehra, A Dalal, A Hooda, S Singh, D Singh, S Kumar, RS Malik, ... Inorganica Chimica Acta 539, 121007 , 2022 2022 Citations: 55
Quantitative structure activity relationship studies of novel hydrazone derivatives as α-amylase inhibitors with index of ideality of correlation M Duhan, J Sindhu, P Kumar, M Devi, R Singh, R Kumar, S Lal, A Kumar, ... Journal of Biomolecular Structure and Dynamics 40 (11), 4933-4953 , 2022 2022 Citations: 55
Nucleobase Sequence Based Building up of Reliable QSAR Models with The Index of Ideality Correlation using Monte Carlo Method P Kumar, A Kumar Journal of Biomolecular Structure and Dynamics 38 (11), 3296-3306 , 2020 2020 Citations: 54
Cytotoxicity of quantum dots: Use of quasiSMILES in development of reliable models with index of ideality of correlation and the consensus modelling A Kumar, P Kumar Journal of Hazardous Materials 402, 123777 , 2021 2021 Citations: 53
Development of prediction model for fructose- 1,6- bisphosphatase inhibitors using the Monte Carlo method A Manisha: Chauhan, S: Kumar, P: Kumar SAR and QSAR in Environmental Research 30 (3), 145-159 , 2019 2019 Citations: 51
