Article
Chemistry, Physical
Kumarasinghe Divakara Mudiyanselage Sakunthala Pubudu Kumari Kumarasinghe, Buddhika C. Karunarathne, Shashiprabha P. Dunuweera, Rajapakse Mudiyanselage Gamini Rajapakse, Kirthi Tennakone, Gamaralalage Rajanya Asoka Kumara
Summary: The study investigates the effect of 4-tertiary-butylpyridine (TBP) on improving the performance of dye-sensitized solar cells. The presence of TBP increases the transport number of iodide ions and the ionic conductivity of the electrolyte. The optimized DSC with TBP shows a conversion efficiency of 7.94%, a high V-OC of 0.709 V, and J(SC) of 17.22 mA cm(-2), a 35% increase in efficiency compared to when TBP is not present.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
De Nguyen, Mai Thi Nguyen, Thuy Thanh Doan Nguyen, Vu Tan Huynh, Binh Phuong Nhan Nguyen, Phuong Tuyet Nguyen
Summary: This study investigates the effects of two new electrolyte additives on the performance of dye-sensitized solar cells. The results show that these additives can improve both the open circuit voltage and the short circuit current, making them promising options for future production and commercialization.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Taotao Hu, Hongming Hou, Jin Peng, Qiaofeng Wu, Jialong He, Hua Yu, Rui Liu, Tian Hou, Xiangqing Zhou, Meng Zhang, Xiaolong Zhang, Xinchun Yang, Yuanmiao Sun, Xuanhua Li, Yang Bai
Summary: In this study, the electrical conductivity and hole extraction capability of NiOx hole transport layer were remarkably enhanced by adding a small molecule, 4-tert-butylpyridine (tBP), to the precursor solution. Additionally, a thin layer of LiF was used to passivate the surface of NiOx, leading to improved hole migration ability. The inverted perovskite solar cells (PSCs) fabricated with tBP: NiOx HTL achieved enhanced efficiency and excellent long-term stability.
MATERIALS TODAY ENERGY
(2023)
Article
Engineering, Electrical & Electronic
Marziyeh Alinejad, M. H. Buraidah, L. P. Teo, A. K. Arof
Summary: By investigating gel polymer electrolytes (GPEs) based on polyvinyl alcohol and iodide/triiodide ions, it was found that the addition of 4-tert-butylpyridine (TBP) can enhance the ionic conductivity and efficiency of saffron dye-sensitized solar cells (DSSCs).
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
De Nguyen, Tuan Van Huynh, Vinh Son Nguyen, Phuong-Lien Doan Cao, Hai Truong Nguyen, Tzu-Chien Wei, Phuong Hoang Tran, Phuong Tuyet Nguyen
Summary: Developing two new electrolyte-based deep eutectic solvents for dye-sensitized solar cells, researchers have achieved simple preparation, low cost, and biodegradability. The two solvents show comparable conversion efficiency to a popular ionic liquid, providing a low-cost and eco-friendly option for massive production of solar cells.
Article
Chemistry, Applied
Jiayuan Li, Yong Zhu, Fei Li, Guoquan Liu, Suxian Xu, Licheng Sun
Summary: Addition of pyridine additives on the surface of TiO2 photoanode can significantly increase the photocurrent, up to 42%. One specific combination under experimental conditions produced a photocurrent density of 1 mA/cm(2).
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Jianyong Wan, Yeshen Liu, Hongda Guo, JingJing Liang, Lvming Qiu, Yuhao Lu, Haibo Xiao
Summary: Six organic sensitizers were synthesized to improve the thermal/photo-stability and solubility while suppressing dye aggregation. The resulting devices showed higher performance due to weak or no aggregation.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Energy & Fuels
Adel Daoud, Ali Cheknane, Afek Meftah, Jean Michel Nunzi, Manal Shalabi, Hikmat S. Hilal
Summary: Dye-sensitized solar cells (DSSCs) are gaining attention as alternatives to traditional photovoltaic solar cells due to their easy manufacturing methods, understandable operating mechanisms, and environmental friendliness. In these solar cells, the competition between electron-hole charge separation and recombination processes determines the fate of the excited electron, while the type of electrolyte determines the competition between recombination reactions and dye regeneration. Despite early studies on combining p-DSSCs and n-DSSCs to create t-DSSCs, the performance is usually poor due to the competing processes, necessitating improvements in DSSCs. This article focuses on the effects of using NiO as a working electrode and discusses the impact of sensitizer, redox couple, and transparent conducting oxide electrode on cell performance.
Article
Chemistry, Multidisciplinary
Abisharani Johnson Mary Leeda Rani, Ahalya Gunasekeran, Devikala Sundaramurthy, Anandan Sambandam
Summary: In this study, Mn3O4 and Mn3O4·CuS nanocomposites were proposed as novel additives in locust bean gum (LBG) gel electrolytes for aqueous dye-sensitized solar cells (DSSCs). By incorporating these additives, an enhanced photoconversion efficiency and longer electron lifetime were achieved.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Gang Wang, Li-Jiao Ma, Bing-Xin Lei, Heng Wu, Zhao-Qing Liu
Summary: Two-dimensional Ti3C2 material with unique electronic, optical, and plasmonic properties has a wide range of applications in photovoltaics. In this study, Ti3C2 nanosheets-modified P25 nanoparticles were used as photoanode films for dye-sensitized solar cells, and the resulting efficiency was significantly improved compared to pure P25.
Article
Chemistry, Multidisciplinary
Amanpal Singh, Yogesh Kumar Saini, Anuj Kumar, Sanjeev Gautam, Dinesh Kumar, Viresh Dutta, Han-koo Lee, Jongsu Lee, Sanjay Kumar Swami
Summary: Graphene oxide (GO) nano-powder is synthesized using the modified Hummer's method and thin films are deposited using a GO water solution. The thermal reduction of GO allows for control of microstructural, electrical, and optical properties. The addition of reduced GO nano-powder to TiO2 paste significantly improves the performance of dye-sensitized solar cells (DSSCs) compared to unmodified TiO2 photoanodes.
Article
Materials Science, Multidisciplinary
M. Rekha, Renuka Yadav, L. Cindrella
Summary: Dye-sensitized solar cells (DSSCs) with Ni1-xFexMnO3 (x=0, 0.2, 0.5, 0.8, 1.0) perovskite nanoparticles as photoanodes are investigated in this study. The synthesized perovskites exhibit impressive optical properties and suitable surface morphologies for DSSC application. Compared to pristine NiMnO3-based DSSCs, the DSSCs with iron-incorporated NiMnO3 photoanodes show increased power conversion efficiency (PCE). Among the materials studied, Ni0.2Fe0.8MnO3-based DSSC achieves the highest PCE of 0.79% and a high open-circuit voltage (VOC) of 0.95 V. The optimized stoichiometry of perovskite composition is attributed to the alignment of the conduction band edge with the lowest unoccupied molecular orbital (LUMO) of N3 dye sensitizer. FeMnO3-based DSSC exhibits the highest VOC of 1.02 V. These findings provide a pathway for unconventional perovskite materials to be used as promising photoanodes in DSSCs, leading to increased VOC and PCE.
Article
Energy & Fuels
J. M. Abisharani, S. Balamurugan, A. Thomas, S. Devikala, M. Arthanareeswari, S. Ganesan, M. Prakash
Summary: A new sequence of GLN gel polymer electrolytes incorporated with KI/I2 redox pair and inexpensive organic additives were prepared. The assimilation of organic additives into the GLN gel polymer electrolytes is confirmed by various analyses, showing improved conductivity and reduced recombination process with the use of SAA organic additive. The EIS analysis provided insights into the charge transport mechanisms at the interface in DSSCs, revealing the importance of functional groups in the charge transfer process for enhanced PCE.
Article
Nanoscience & Nanotechnology
Pei-Hsuan Chang, Manik Chandra Sil, Kamani Sudhir K. Reddy, Ching-Hsuan Lin, Chih-Ming Chen
Summary: By synthesizing PI-COFs and doping them into the TiO2 photoelectrode of DSSC, the power conversion efficiency of the cell was improved, showcasing promise for enhancing solar efficiency in the development of DSSCs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Hoang Khang Le, Thanh Tung Phan, Thi My Nuong Nguyen, Thanh Chung Nguyen, Cong Luan Tran, Poul Erik Hansen, Quang Ton That
Summary: Panax vietnamensis is an endemic species of Vietnam, and its leaves contain five compounds, including a new compound called panaxolide. The structures of these compounds were determined using various spectral techniques. In vitro experiments showed that panaxolide has the highest potential for inhibiting the growth of HepG2 cancer cells.
NATURAL PRODUCT RESEARCH
(2023)
Article
Chemistry, Physical
Mahmoud Bazrafshan, Mohammad Vakili, Sayyed Faramarz Tayyari, Fadhil S. Kamounah, Poul Erik Hansen, Ali Shiri
Summary: The structures, conformations, and intramolecular hydrogen bonding of amino derivatives of ethyl acetoacetate were characterized using computational analysis and spectroscopic techniques. The results showed that ethyl (Z)-3-(phenylamino)but-2-enoate had the strongest intramolecular hydrogen bonding, while ethyl (Z)-3-(benzylamino)but-2-enoate and (Z)-methyl 3-aminobut-2-enoate had relatively weaker intramolecular hydrogen bonding.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Mahmoud Bazrafshan, Mohammad Vakili, Sayyed Faramarz Tayyari, Fadhil S. Kamounah, Poul Erik Hansen, Mohammad Reza Housaindokht
Summary: This research investigates the molecular structure and intramolecular hydrogen bonding of 5-amino-2,2,6,6-tetramethyl-4-hepten-3-one using spectroscopic techniques and computational analysis. The results show agreement between the calculated and crystallographic geometrical parameters. A comparison with other compounds suggests the potential of this system as a molecular switch.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Spectroscopy
Duy Duc Nguyen, Nykola C. Jones, Soren V. Hoffmann, Jens Spanget-Larsen
Summary: The UV absorbance bands of 1,4-distyrylbenzene (DSB) were investigated using Synchrotron Radiation Linear Dichroism (SRLD) spectroscopy with stretched polyethylene as an anisotropic solvent. The observed polarization data provided information on the transition moment directions. The study revealed four main band systems in the vacuum UV region.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Biochemistry & Molecular Biology
Salvia Sajid, Lilia Hernandez Salas, Maria Rafiq, Torben Lund, Mikkel Girke Jorgensen, Bent Honore, Lars Porskaer Christensen, Paul Robert Hansen, Henrik Franzyk, Osman Mirza, Bala Krishna Prabhala
Summary: Membrane transport proteins play a crucial role in maintaining cellular homeostasis by facilitating the transport of various molecules across the cell membrane. Overexpression of these proteins has been shown to alter the metabolomic and proteomic profiles of host cells. In this study, we investigated the physiological consequences of overexpressing the membrane transport protein YdgR from E. coli in two different strains. We observed significant differences in the metabolomics and proteomics profiles between cells expressing functional YdgR and attenuated YdgR. The findings suggest a potential role of YdgR in the transport of proline-containing tripeptides.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Torben Lund, Maria Yohanna Kulkova, Rosa Jersie-Christensen, Tove Atlung
Summary: Enzymes carrying Iron-Sulfur (Fe-S) clusters play important cellular roles, and their biogenesis is complex. The IBA57 protein is essential for the assembly and insertion of [4Fe-4S] clusters in mitochondria. YgfZ is the bacterial counterpart of IBA57, but its specific role in Fe-S cluster metabolism is unknown. YgfZ is required for the activity of the MiaB enzyme, which thiomethylates tRNAs. RimO, a homologue of MiaB, thiomethylates a conserved aspartic acid in ribosomal protein S12. Our study shows that RimO activity is dependent on YgfZ but independent of growth temperature, providing insights into the role of auxiliary 4Fe-4S clusters in Radical SAM enzymes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physics, Applied
Tung Thanh Ngo, Uyen Tu Thi Doan, Quyen Truc Thi Vo, Truong Lam Huynh, Nam Hoang Vu, Hanh Kieu Thi Ta, Le Thi Mai Hoa, Yoshiyuki Kawazoe, Phuong Tuyet Nguyen, Ngoc Kim Pham
Summary: In this study, a thin film of methylammonium lead iodide (MAPbI(3)) was used as a switching layer in metal/MAPbI(3)/FTO devices, with Ag and Cr used as active and inert top electrodes, respectively. The Ag/MAPbI(3)/FTO structure displayed digital bipolar resistive switching (RS) behavior, while the Cr/MAPbI(3)/FTO device displayed analog RS behavior. Density functional theory simulations indicated that the different behaviors may be due to the interaction between the iodine vacancy defect and the metal contact properties. The findings suggest that organic-inorganic hybrid perovskite has potential for data storage.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Poul Erik Hansen, Vahidreza Darugar, Mohammad Vakili, Fadhil S. Kamounah
Summary: The synthesis of three possible 1-(n-pyridinyl)butane-1,3-diones (nPM) is described, along with investigations into their structures, tautomerism, and conformations using DFT calculations. H-1 and C-13 NMR spectra are assigned, and deuterium isotope effects on C-13 chemical shifts have been measured. Analysis of the isotope effects provides equilibrium constants for the keto-enol tautomers. The compounds show interesting differences compared to the phenyl analogs, and the isotope effects can rank the hydrogen bonds of the compounds, with the nitrogen-substituted compound being the weakest. DFT calculations at the B3LYP/6-311++G(d,p) level are used to calculate structures, conformers, energies, and NMR nuclear shieldings.
MAGNETIC RESONANCE IN CHEMISTRY
(2023)
Article
Chemistry, Applied
Hien Bich Thi Le, Duc Viet Ho, Hien Minh Nguyen, Van Anh Thi Tran, Hoai Thi Nguyen
Summary: Two new spirostanol saponins, Aspidiatas C and D, were isolated from the whole plant of Aspidistra triradiata collected in Vietnam, along with two known compounds. The chemical structures were determined using HRESIMS, 1D- and 2D-NMR analysis. Compound 3 showed potent cytotoxicity against various human cancer cell lines, while compounds 1, 2, and 4 displayed moderate cytotoxic effects. These compounds were isolated from the genus Aspidistra for the first time.
NATURAL PRODUCT RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Poul Erik Hansen, Fadhil S. Kamounah
Summary: Large biomolecules often have multiple intramolecular hydrogen bonds. The patterns of these bonds can be unraveled using tools like deuterium isotope effects on chemical shifts. This paper demonstrates how theoretical calculations combined with experimental measurements can establish the complex intramolecular hydrogen bond patterns of rifampicin as an example.
CHEMISTRY-SWITZERLAND
(2023)
Article
Chemistry, Physical
Mohammad Vakili, Vahidreza Darugar, Fadhil S. Kamounah, Poul Erik Hansen, Mathias Hermann, Michael Pittelkow
Summary: Three 1-(n-pyridinyl)butane-1,3-diones (nPM) (n = 2, 3, and 4) molecules were synthesized and their molecular structure, tautomerism, conformational stability, and intramolecular hydrogen bonding (IHB) of cis-enol forms were investigated. The results showed that the intramolecular hydrogen bond strength of stable cis-enol forms of nPM molecules ranged from 17.9 to 20.3 kcal/mol. The comparison with acetylacetone (AA) and benzoylacetone (BA) revealed the calculated structures, NBO, and intramolecular hydrogen bond strengths. The tautomer with the OH group next to the pyridine ring was confirmed as the best description of the structure in the solid-state.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Torben Lund, Wesley Allan Paskett, Lasse H. Hojgard, Rasmus Neerup-Jensen
Summary: A solar pavilion with 248 semi-transparent DSC modules measuring 30 x 30 cm each was constructed at Roskilde University campus in 2016. After 5 years of operation, two representative modules from the south and north sides were removed and their electrical performance relative to new modules was evaluated. The results showed that the south module experienced an 85% decrease in efficiency, while the north module had a 34% decrease after 5 years. Both modules showed dye degradation, with the south module having a 73% degradation and the north module having a 50% degradation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Applied
Hoang Khang Le, Thanh Tung Phan, Thi Kieu Loan Vo, Thi Thuy Duong Ngo, Hoang Long Ngo, Poul Erik Hansen, Quang Ton That
Summary: Six compounds were isolated from the stems of Miliusa velutina, including a new cyclofarnesane sesquiterpenoid, miliutine A acid (1), and a cyclofarnesane sesquiterpenoid, miliutine B methyl ester (2), whose absolute configuration was determined for the first time. Four known phenol derivatives (3-6) were also identified. NMR spectroscopy, mass spectrometry, Electronic Circular Dichroism (ECD), and NOESY spectra analysis were used for structure identification. All six compounds showed weak or no cytotoxic activities against the HepG2 cell line.
NATURAL PRODUCT RESEARCH
(2023)
Article
Materials Science, Ceramics
De Nguyen, Ha-Phuong Thi Ngo, Anh-Tho Ngoc Vo, Phuong Tuyet Nguyen
Summary: Increasing demands for sustainable dye-sensitized solar cells drive the search for affordable and less volatile electrolyte additives. Urea and acetamide were explored as alternatives to the commonly used 4-tert-butylpyridine. Urea and acetamide demonstrated improved stability and performance in DSC devices, making them suitable replacements for hazardous chemicals like 4-tert-butylpyridine.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Duy Duc Nguyen, Nykola C. Jones, Soren V. Hoffmann, Jens Spanget-Larsen
Summary: The UV absorbance spectra of trans-stilbene (DPE) and (E,E')-1,4-diphenyl-1,3-butadiene (DPB) were studied using Synchrotron Radiation Linear Dichroism (SRLD) spectroscopy with stretched polyethylene as an anisotropic solvent. The polarization data provided information about the transition moment directions of the observed spectral features. A comparison was made between the observed spectral bands and the results of quantum chemical calculations using LCOAO and TD-DFT with the CAM-B3LYP functional.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
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)
