Article
Chemistry, Physical
M. Joice Malini, R. Kunjitham, M. K. Sangeetha, S. Ramalingam
Summary: In this study, an organo-metallic compound, nickel sulphate doped L-Valine crystal, was grown using the slow evaporation method. Analysis of the crystal structure, optical properties, and laser mechanism indicated its potential for laser processes. The study also proposed tuning methods to enhance the laser action based on the crystal composition and laser mechanism analysis.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
K. Sooryakala, S. Ramalingam, S. Periandy, R. Aarthi
Summary: A new organic composite crystal was grown using the Bridgman method from a 2-Chloro-4-nitro-N-methylaniline compound. The crystal was characterized morphologically, optically, and opto-electronically, and various calculations were performed to interpret its physical, chemical, and optical characteristics. Nonlinear optical properties, vibrational data, dielectric susceptibility, and band gap tuning were investigated, providing insights into the crystal's properties and potential applications.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Physics, Condensed Matter
K. Sooryakala, S. Ramalingam, R. Maheswari, R. Aarthi, M. Venkateswarlu
Summary: The organic NLO crystal for 4-Amino-5-Nitroindole was successfully grown using slow evaporation method and evaluated for crystal superiority by recording XRD pattern. The crystal structure was framed using molecular planes to find unit cell parameters, and the density of molecular structure in crystal geometry was measured. The efficiency of NLO activity was calculated by testing the electronic assisted optical activity of dielectric phase of material.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Crystallography
Ramalingam Thirumurugan, Singaravelu Ramalingam, Sengany Periandy, Ramadoss Aarthi
Summary: In this work, a semi-organic, 2-aminofluorene single-crystal was grown by slow evaporation method, optimized, and characterized. The crystal lattice was estimated to be orthorhombic, with birefringence and electro-optic effects observed. Dielectric loss, optical scattering caused by amino groups, and the use of chemical energy for light frequency amplification were thoroughly studied.
CRYSTAL RESEARCH AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
S. Ramalingam, K. Jayachitra, J. Karpagam, S. Periandy, R. Aarthi
Summary: In this study, the crystal of the organic compound 1,8-anthracenedimethanol was successfully grown using the slow evaporation method. The crystal was characterized morphologically, structurally, optically, spectroscopically and their properties were enhanced by incorporating methanol groups into suitable positions. The crystal's optical properties, Mulliken charge dispersion, and UV-Visible trans-absorption curves were examined, and the NLO activity was observed from hyperactive polarizability.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
R. Thirumurugan, S. Ramalingam, S. Periandy, R. Aarthi, J. Karpagam
Summary: The 4-Dimethylamino-4'-Nitrobiphenyl Semi organic single crystal was grown using the slow evaporation method to evaluate its nonlinear optical properties. Through optimizing the molecular model arrangement and crystal cleavage, the optical properties of the crystal were validated. The study demonstrated that the crystal exhibited good nonlinear optical performance and electro-optic impact.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Inorganic & Nuclear
M. Jothibas, M. Sankar, A. Muthuvel, Soorya Srinivasan, M. Elayaraja
Summary: In this study, pure and Sn-doped CdS nanoparticles were synthesized using the sol-gel method, and their structural, optical, morphological, and functional group properties were investigated. The results showed that Sn doping can alter the optical characteristics and lattice structure of CdS nanoparticles, and also enhance their photocatalytic activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
N. Mahendran, S. Johnson Jeyakumar, M. Jothibas, M. Ponnar, A. Muthuvel
Summary: In this study, hafnium oxide nanoparticles with different copper contents were successfully synthesized using the sol-gel technique. The influence of copper concentration on the morphology and structure of the nanoparticles was investigated. The results showed that copper doping can change the crystalline structure of hafnium oxide and decrease the energy gap. Fourier transform infrared and photoluminescence spectra confirmed the presence of copper. SEM and TEM observations revealed the spherical morphology of the synthesized samples with particle sizes ranging from 34 to 43 nm. Additionally, the electrical resistivity of the nanomaterial decreased with increasing doping content, indicating improved conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
S. Johnson Jeyakumar, A. Sindhya, M. Jothibas
Summary: The properties of hydroxyapatite/PVA composites derived from three different naturally occurring calcium precursors were compared in this study. The samples were tested for their bioactivity, hemocompatibility, and antibacterial efficiency. Coral-derived nHAp/PVA showed better performance, while seashell/PVA had good results in all aspects. Eggshell nHAp/PVA exhibited less stability in TG-DTA. This study suggests that both seashells and corals can be used as calcium precursors for the production of high-quality hydroxyapatite used in hard tissue replacements/substitutes.
SURFACES AND INTERFACES
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
G. Rajeswari, G. Thanapathy, N. Mahendran, S. Ramalingam, B. Senthilkumaran
Summary: A new semiorganic non-linear L-Valine cobalt sulphate crystal with high crystallinity and stability for Non-Linear Optical applications was developed using the method of slow evaporation at room temperature. Characterization and analysis of the crystal were conducted using XRD, FT-IR, and UV-Vis-NIR techniques. The results showed that the crystal exhibited sharp peaks in the XRD spectrum, confirmed functional groups from the FT-IR analysis, and had high absorption in the visible and NIR regions. Additionally, the existence of chemical species in the crystal and its antibiotic activity were determined.
MATERIALS TODAY-PROCEEDINGS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
B. Arunkumar, J. Vasudevan, S. Johnson Jeyakumar, M. Jothibas
Summary: The synthesis of Ce-doped ZnO nanoparticles enhances the results and improves electronic properties. The crystal size decreases with increasing cerium doping concentration, reaching a minimum at 8 wt%, and then increases at 10 wt% doping level. UV-Visible spectra analysis shows high absorbance and a broad peak at 8 wt%. PL studies confirm enhanced intensity of green emission, indicating increased density of defects caused by the presence of Ce dopants. The Ce-doped ZnO nanoparticles exhibit a minimum band gap energy value of 1.32 eV at 8 wt%. VSM studies reveal room temperature ferromagnetism in the Ce-doped ZnO NPs. The observed ferromagnetism is attributed to the presence of Ce3+ ions, oxygen vacancies, and interstitial sites of Zn.
MATERIALS TODAY-PROCEEDINGS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
G. Rajeswari, G. Thanapathy, N. Mahendran, S. Ramalingam, B. Senthilkumaran, P. Muthukumaran
Summary: A semi-organic nonlinear optical single crystal of L-valine barium chloride was successfully grown using a slow evaporation technique at room temperature. The crystal was characterized for its crystalline structure, functional groups, thermal stability, and antibacterial activity, showcasing its potential for NLO applications.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Chemistry, Physical
A. Sathya, S. Ramalingam, P. B. Nagabalasubramaniyan, J. Karpagam
Summary: The physico-chemical, structural and biological significance of the drug Sulfamethoxazole was analyzed using vibrational spectroscopic, biological assessment and theoretical tools. The study focused on structure activity, molecular charge depletion profile, chemical potential exchange and biological profile to understand the drug's potential and functionality. The research also explored non-bonded transitions, enantiomer characteristics and hyperactive pressure to validate the biological properties of the molecule.
CHEMICAL PHYSICS IMPACT
(2021)
Article
Chemistry, Physical
M. Joice Malini, S. Ramalingam, R. Kunjitham, M. K. Sangeetha
Summary: This research work attempted to fabricate efficient NLO crystal using organic composite with L-Valine doped EDTA. The crystal lattice characteristics, refractive indices, birefringence, NLO efficiency, vibrational modes, dielectric susceptibility, chemical shift, band gap, transparency, thermal stability, and molecular coordination arrangement were studied. The exchange of chemi-potential energy among different molecular entities for the bonded composite was also measured.
CHEMICAL PHYSICS IMPACT
(2021)
Article
Multidisciplinary Sciences
A. Abbas Manthiri, S. Ramalingam, Gene George, R. Aarthi
Summary: This study thoroughly analyzed the inducement of pharmaceutical property through various tools including vibrational spectroscopic, biological and theoretical tools. The research delved into the structural arrangement, molecular charge depletion profile, chemi-equivalent potential exchange, and the enhancement of drug quality parameters. Additionally, it investigated the exchange of oscillating chemical energy, non-bonded transitions, and drug assistance for enantiomer characteristics, ultimately aiming to determine successful drug mechanisms and toxicity effects.
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)