Review
Chemistry, Multidisciplinary
Tasneem Elkoush, Natasha D. Reich, Michael G. Campbell
Summary: In the past two decades, there has been a significant increase in the number of synthetically useful transformations catalyzed by silver, with dinuclear silver species commonly emerging as a key feature in these reactions. Understanding the role of dinuclear silver complexes in homogeneous catalysis can aid in the development of improved design principles for silver catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Green & Sustainable Science & Technology
F. A. Cunha, E. V. H. Agressott, A. R. Paschoal, F. L. de Menezes, L. M. U. D. Fechine, R. T. Martins, R. de Cassia C. Barbosa, M. C. S. O. Cunha, E. A. Menezes, H. D. M. Coutinho, P. B. A. Fechine
Summary: The aim of this work was to synthesize alginate-based spheres for encapsulating biologically synthesized silver nanoparticles. The spheres were characterized using various techniques, and their catalytic activity in degrading drug molecules was evaluated. The results showed that the spheres exhibited excellent catalytic activity, with a removal rate of over 95% for specific pollutants.
MATERIALS TODAY SUSTAINABILITY
(2022)
Article
Engineering, Environmental
Dambarudhar Parida, Eva Moreau, Rashid Nazir, A. Khalifah Salmeia, Ruggero Frison, Ruohan Zhao, Sandro Lehner, Milijana Jovic, Sabyasachi Gaan
Summary: A simple method is used to prepare a hydrogel microparticle catalyst embedded with silver nanoparticles, which can efficiently reduce specific pollutants and deactivate under basic conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Saptashwa Chakraborty, Bijoyananda Mishra, Pratim Kumar Das, Sandip Pasari, Srinivas Hotha
Summary: The silver-assisted gold-catalyzed activation of alkynyl glycosyl carbonate donors is a versatile approach for the synthesis of various types of N-glycosides, including purine and pyrimidine nucleosides, asparagine glycosides, and quinolin-2-one N-glycosides. This method enables the synthesis of nucleosides that are difficult to obtain through other means. Additionally, it can be used to easily synthesize 2'-modified nucleosides and dipeptide disaccharide units of chloroviruses.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Liqin Cai, Lina Zhang, Xiaojuan Xu
Summary: This study presents a stable and reusable homogeneous catalyst of ultra-small silver nanoparticles loaded triple-helix beta-glucan nanomaterial for efficient degradation of dyes and 4-nitrophenol in wastewater. The catalyst effectively disperses and stabilizes silver nanoparticles using Ag-O bonds in water, showing high catalytic efficiency. The research provides a novel strategy for designing eco-friendly homogeneous catalysts in wastewater treatment and expands the application of natural polysaccharides in synthetic catalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Rok Mravljak, Ozbej Bizjak, Benjamin Bozic, Matejka Podlogar, Ales Podgornik
Summary: Continuous catalytic reactors offer more efficiency and control compared to batch operation, with high internal phase emulsion polymer materials containing an immobilized silver catalyst used for this purpose. Investigation revealed that the mass of deposited silver is dependent on aldehyde concentration and Tollens reagent composition, with nanoparticles showing high crystallinity and uniform surface coverage. The example of 4-nitrophenol catalytic reduction in a continuous process demonstrated productivity increase with volumetric silver density and flow rate, while maintaining efficiency during prolonged usage and storage.
Article
Chemistry, Multidisciplinary
Zhenhua Zhang, Julius B. Stueckrath, Stefan Grimme, Andreas Gansaeuer
Summary: Cp2Ti(TFA) is a versatile catalyst for the [2+2] cycloaddition of bisenones through inner-sphere electron transfer, with a unique 5-exo step as the rate-determining step followed by a favorable 4-exo cyclization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Micode Mazhani, Melisew Tadele Alula, Davison Murape
Summary: In this study, a facile and eco-friendly method was used to synthesize silver nanoparticles coated magnetic nanoparticles. The nanocomposites showed excellent catalytic performance, effectively degrading various pollutant dyes, while also enabling real-time monitoring and recyclability.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Ahmed I. El-Tantawy, Shimaa M. Elsaeed, Rana R. Neiber, Wael H. Eisa, Abdel Aleem H. Abdel Aleem, Ahmed A. El-Hamalawy, Mai S. Maize
Summary: Two novel mono-and bis-thioureidophosphonate cores (MTP & BTP) were synthesized in ionic liquid conditions and incorporated with silver nanoparticles (Ag NPs), resulting in two heterogeneous nanocatalysts (Ag NP/MTP and Ag NP/BTP). The as-fabricated Ag NP/TP nanocomposites exhibited good dispersion of Ag NPs and the catalytic properties were verified through the chemical conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP).
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Abid Ullah, Ghazanfar Ali Khan, Waqqar Ahmed
Summary: Gold nanostars (AuNSs) with interesting morphology are highly valued for their applications in catalysis and surface-enhanced Raman scattering (SERS). However, as the size of the AuNSs increases, their catalytic activity decreases. This study demonstrates that coating larger AuNSs with silver (Ag) significantly improves their catalytic activity. The Ag-shell thickness can be controlled by adjusting the reaction conditions, and Ag-coated AuNSs show a remarkable enhancement in catalytic properties. This makes them suitable for various applications, including catalytic mechanistic studies using SERS.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Murugavelu Marimuthu, Huanhuan Li, Quangsheng Chen
Summary: A facile ultrasonically driven Silver based bimetallic nanoparticles (BNPs) were synthesized in high yield by chemical reduction technique and showed excellent catalytic efficiency. The AgPd BNPs exhibited the highest catalytic efficiency, attributed to the synergistic effects of high surface area, porous and hollow structures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Jiadong Zhou, Xinlei Liu, Jingjiao Huang, Da Guo, Hao Sun, Chenzhe Xu, Jiazheng Zhang, Xiang Ji, Juanjuan Ma, Lin Liu, Zhiwei Tong
Summary: The ternary hybrid of strontium niobate and Ag nanoparticles with Ni-Al LDH was successfully synthesized and exhibited high catalytic activity and stability for the reduction of 4-nitrophenol. The catalyst can be recycled up to five successive cycles without significant loss of catalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jhilam Majumder, Tinku Bhunia, Satabdi Gorai, Debojyoti De, Parimal Karmakar, Ratan Gachhui
Summary: In this study, novel biogenic silver nanoparticles were synthesized using a green method involving a yeast strain, Papiliotrema laurentii (Y24) cell resuspension exudate. The synthesized AgNPs exhibited high crystallinity, irregular to cubical shape, and an average size of 20 nM. Y24-NPs showed excellent catalytic activity for the reduction of 4-Nitrophenol to 4-Aminophenol and high selectivity and sensitivity towards Fe3+ for colorimetric detection. The developed nanosensor was successfully tested for Fe3+ ions in tap water samples.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Engineering, Environmental
Kun Wang, Xun Zhu, Yang Yang, Dingding Ye, Rong Chen, Qiang Liao
Summary: The Ag-PDA/PDMS composite has been successfully prepared and shown to possess excellent light-to-heat conversion ability and stability under light irradiation, resulting in a significantly higher degradation rate of 4-NP. This study provides an efficient pathway to design robust catalyst composites with high-performance photothermal conversion efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Cen Zhang, Li Wang, Xi Huang, Liang Bai, Qiyuan Yu, Bin Jiang, Chenlu Zheng, Jing Cao
Summary: Efficient and cost-effective non-noble metal catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) have been developed. Co-promoted 1T-MoS2 nanoflowers were synthesized and the effect of Co content on the structure and catalytic performance of 1T-MoS2 was studied. Co doping enhanced the electronic conductivity and hydrogen adsorption ability of 1T-MoS2, leading to the highest activity through the synergy effect of Co-Mo-S and CoS2 active phase. The catalyst Co/1T-MoS2-0.3 showed a high reaction rate constant and excellent stability in the catalytic reduction of 4-NP. This study provides new insights for the rational design of efficient metal-doped MoS2 catalysts for 4-NP reduction in wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Kannan Badri Narayanan, Gyu Tae Park, Sung Soo Han
Summary: The development of graphene-polyiodide nanocomposites by utilizing soluble starch biopolymer as a functionalizing and reducing agent has shown to be effective in creating nanomaterials with superior antibacterial properties for food packaging applications. The nanocomposites exhibited good antibacterial activities against E. coli and S. aureus, showcasing potential as high-efficacy antibacterial starch-based nanomaterials.UV-visible spectroscopy, X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and energy-dispersive spectroscopy were used to confirm the presence of polyiodide in the starch-reduced graphene oxide.
Article
Food Science & Technology
Kannan Badri Narayanan, Gyu Tae Park, Sung Soo Han
Summary: The study identified an antagonistic compound against multidrug-resistant Staphylococcus aureus strains from Pseudomonas aeruginosa YUSA1 isolated from freshwater. The crude ethyl acetate extract showed in vitro antibacterial and antibiofilm properties against MRSA, suggesting its potential use in food packaging materials with antibacterial effects.
Review
Materials Science, Textiles
Kannan Badri Narayanan, Natarajan Sakthivel, Sung Soo Han
Summary: Metal- and carbon-based nanoparticles with unique nanometric dimensions have diverse physical and chemical properties, and can be synthesized through green methods using plants and microorganisms. These nanomaterials have a wide range of applications in fields such as chemical catalysis, cancer treatment, antimicrobial activities, and bioimaging.
FIBERS AND POLYMERS
(2021)
Article
Chemistry, Physical
Priyanka Raju Thomball, Kummara Madhusudana Rao, Sunmi Zo, Kannan Badri Narayanan, Raju S. Thombal, Sung Soo Han
Summary: A highly efficient nitrogen-doped carbon sheet-like material (NCS) is developed via simple pyrolysis, which shows excellent catalytic activity towards the reduction of nitro-compounds and can be easily recovered and reused multiple times.
Article
Crystallography
Hyun Ho Park
Summary: IRG1 is an enzyme that is overexpressed during immune reactions and catalyzes the production of itaconate, which has antibacterial and antiviral activities. The exact mechanism of IRG1 enzymatic reaction remains unclear, but structural studies are expected to shed light on it.
Review
Biotechnology & Applied Microbiology
Kannan Badri Narayanan, Sung Soo Han
Summary: The fabrication of novel biomaterial scaffolds with improved biological interactions and mechanical properties is crucial for tissue engineering. Protein/peptide-based polymeric scaffolds, especially those created through bioorthogonal enzymatic reactions, show great potential in replicating the in vivo microenvironment for cell differentiation and tissue formation. Peptide ligases, including natural ones like sortases and butelase 1, as well as engineered ones like trypsiligase and subtiligase, are efficient tools for enzymatic cross-linking of protein/peptide-based polymeric chains. These ligases can enhance cell attachment, growth, and differentiation by conjugating with cell-adhesive ECM proteins or motifs and growth factors. The review discusses the potential, limitations, and mechanisms of natural and engineered peptide ligases in the fabrication of (bio)polymeric scaffolds for various tissue engineering and regenerative applications.
ENZYME AND MICROBIAL TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Shaukat Khan, Mazhar Ul-Islam, Muhammad Wajid Ullah, Youlong Zhu, Kannan Badri Narayanan, Sung Soo Han, Joong Kon Park
Summary: This review summarizes the techniques used to develop 3D bacterial cellulose (BC) scaffolds and discusses their potential biomedical applications. It provides comprehensive coverage of the idea, requirements, synthetic strategies, and current and prospective applications of 3D BC scaffolds, making it useful for researchers working with polysaccharides, biopolymers, or composite materials.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Pharmacology & Pharmacy
Kummara Madhusudana Rao, Kannan Badri Narayanan, Uluvangada Thammaiah Uthappa, Pil-Hoon Park, Inho Choi, Sung Soo Han
Summary: In this study, multifunctional fungal mushroom-derived hydrogels were developed for wound dressing applications, with tissue adhesive, hemostasis, self-healing, and antibacterial properties. The hydrogels exhibited good swelling ratio, biodegradability, mechanical properties, and high adhesion strength to porcine skin. Additionally, they showed excellent antibacterial properties and promoted cell viability and attachment, making them a promising material for wound healing.
Article
Multidisciplinary Sciences
Abdulrahman Ahmed Sharwani, Kannan Badri Narayanan, Mohammad Ehtisham Khan, Sung Soo Han
Summary: This study successfully synthesized silver-loaded zinc oxide nanocomposites with unique morphologies and demonstrated their photocatalytic and antimicrobial abilities. These materials possess high thermal stability and large surface area, and show efficient degradation and bactericidal effects on various pollutants.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Prakash Shrestha, Shiva Pathak, Shobha Regmi, Kannan Badri Narayanan, Tiep Tien Nguyen, Simmyung Yook, Jong Oh Kim, Jee-Heon Jeong
Summary: Extracellular matrix (ECM) is crucial for cell biology, and artificial microfibers mimicking ECM can enhance cell-polymeric fiber interactions and improve cell viability. Loading antioxidant drugs into microfibers further enhances cell viability.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Review
Pharmacology & Pharmacy
Kannan Badri Narayanan, Rakesh Bhaskar, Sung Soo Han
Summary: Nanogels (NGs), a significant nanoplatform with properties of both hydrogels and nanoparticles, have been extensively used for controlled/sustained delivery of therapeutic agents in biomedical and healthcare applications. This review summarizes the synthesis and functionalization strategies of NGs and highlights their recent advances in various biomedical fields such as cancer theranostics, immunotherapy, sensing, and tissue engineering.
Article
Materials Science, Multidisciplinary
Madeshwaran Sekkarapatti Ramasamy, Rakesh Bhaskar, Kannan Badri Narayanan, Shiv Dutt Purohit, Sang Shin Park, Amutheesan Manikkavel, Byungki Kim, Sung Soo Han
Summary: This study reports a method to fabricate nanofiber scaffolds with improved piezoelectric responses, surface properties, and cytocompatibility. The modified scaffolds showed enhanced mechanical properties and hydrophilicity compared to the original scaffolds, and had higher cell attachment and proliferation abilities. These scaffolds have potential applications in tissue growth and regeneration, medical detection, and biological force sensing.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Microbiology
Kannan Badri Narayanan, Rakesh Bhaskar, Yong Joo Seok, Sung Soo Han
Summary: The biological synthesis of nanocomposites provides a cost-effective and environmentally friendly way to produce materials with enhanced properties. In this study, zinc oxide and silver/zinc oxide nanocomposites were biosynthesized using the cell-free filtrate of Lysinibacillus sphaericus, and their properties were characterized using various techniques. The nanocomposites showed improved photocatalytic efficiency, cytotoxicity against cancer cells, and antibacterial activity, making them promising materials for biomedical and environmental applications.
Review
Neurosciences
Shampa Ghosh, Jitendra Kumar Sinha, Soumya Ghosh, Hitaishi Sharma, Rakesh Bhaskar, Kannan Badri Narayanan
Summary: This comprehensive review explores innovative therapies for epilepsy management, including responsive neurostimulation, vagus nerve stimulation, deep brain stimulation, gene therapies, and optogenetics. It also discusses adjunctive therapies like cannabidiol and the ketogenic diet. The importance of staying updated with emerging trends in epilepsy management is emphasized, along with the hope for improved therapeutic options.
Article
Polymer Science
Kannan Badri Narayanan, Rakesh Bhaskar, Kuncham Sudhakar, Dong Hyun Nam, Sung Soo Han
Summary: In this study, BC hydrogel was functionalized with PDA and used in skin tissue engineering. Characterization techniques were used to investigate the formation of PDA on BC nanofibers. The BC/PDA hydrogels showed excellent tensile strength, water-wetting ability, and enhanced cell viability, making them potential biocompatible alternatives for skin tissue engineering and wound-dressing applications.
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)