Article
Chemistry, Physical
Marcel Munoz, Pablo Rojas, Matias Vidal, Carolina Aliaga, Moises Dominguez
Summary: This study reports the synthesis and spectral behavior of three Brooker's Merocyanine (BM) analogs. The solvatochromic effect of the binding position of the phenolate donor group to the pyridinium acceptor ring and the degree of annulation of the acceptor moiety were investigated. All the dyes exhibited an inverted solvatochromism. The structural modifications modulated the spectral shift ranges and displaced the solvatochromic inversion point towards higher solvent polarities.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Miria C. dos Santos, Francielly T. Souto, Celso R. Nicoleti, Matheus C. Colaco, Giovanni F. Caramori, Vanderlei G. Machado
Summary: Brooker's merocyanine (BM) is a solvatochromic probe with a band in the visible region sensitive to changes in polarity. Inspired by BM, we synthesized four novel dipodal and tripodal solvatochromic dyes (1b-4b) and characterized them using spectroscopic and calorimetric techniques. The dyes showed negative solvatochromism, exhibiting different colors with changes in solvent polarity. Different parameter strategies fitted the experimental data, with HBD acidity of the solvent playing a major role in solvation. Theoretical calculations revealed that the absorption bands in the dyes were due to a π → π* transition, but did not reproduce the experimentally observed negative solvatochromism. Comparing the experimental and theoretical data with literature provided valuable information.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Applied
Lukas Fliri, Gabriel Partl, Daniel Winkler, Gerhard Laus, Thomas Muller, Herwig Schottenberger, Michael Hummel
Summary: This study investigates the influence on solution behavior and solvatochromism caused by attaching a 1H,1H,2H,2H-perfluomoctyl side chain to derivatives of the Brooker's Merocyanine chromophore. The observed changes in spectral characteristics and convergence of maxima at specific wavelengths in different solvents suggest that aggregation might contribute to the phenomena observed. Further concentration-dependent UV-Vis measurements were conducted to support the proposed hypothesis.
Article
Biochemistry & Molecular Biology
Dmitrii L. Obydennov, Diana I. Nigamatova, Alexander S. Shirinkin, Oleg E. Melnikov, Vladislav V. Fedin, Sergey A. Usachev, Alena E. Simbirtseva, Mikhail Y. Kornev, Vyacheslav Y. Sosnovskikh
Summary: A straightforward approach for the construction of new conjugated pyran compounds was developed based on the enamination of 2-methyl-4-pyrones with DMF-DMA. The prepared compounds exhibited valuable photophysical properties and solvatochromism.
Article
Chemistry, Multidisciplinary
Bin Liu, Yvonne Vonhausen, Alexander Schulz, Claudia Hoebartner, Frank Wuerthner
Summary: The study demonstrated the suitability of the N-(2-aminoethyl)-glycine oligomers backbone for the formation of structurally defined dye stacks, but the peptide backbone cannot direct the formation of a defined duplex architecture upon further extension of the oligomer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Fengrui Sui, Min Jin, Yuanyuan Zhang, Ruijuan Qi, Yu-Ning Wu, Rong Huang, Fangyu Yue, Junhao Chu
Summary: This paper reports the unconventional room-temperature ferroelectricity, both out-of-plane and in-plane, in the 2D-vdW γ-InSe semiconductor triggered by yttrium-doping (InSe:Y). The enhanced sliding switchable polarization is directly visualized, and the microstructure modifications, including stacking-faults elimination and a subtle rhombohedral distortion, are identified as the origin of this phenomenon. These findings provide new opportunities for manipulating the intrinsic properties of 2D-vdW layered semiconductors, expanding the potential ferroelectric candidates for future nanoelectronics.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Carlos E. A. de Melo, Moises Dominguez, Marcos C. Rezende, Vanderlei G. Machado
Summary: Solvatochromic dyes, especially Effenberger's dye (ED), have been used to probe the polarity of the medium. Six imine probes inspired by ED were synthesized and characterized, showing positive solvatochromism similar to ED. The study highlights the importance of polarizability in solvation of the dyes.
Article
Chemistry, Multidisciplinary
Yinjun Chen, C. Joshua Yeh, Qiang Guo, Yuan Qi, Rong Long, Costantino Creton
Summary: A mechanochemistry based approach using Spiropyran (SP) as a force sensitive molecular probe in multiple network elastomers (MNE) is proposed to detect and map stress history during dynamic processes. The color changes from Spiropyran to Merocyanine and subsequent reversible isomerization of Merocyanine provide insights into the stress experienced by the material. The color changes can be used to accurately map stress history during loading and unloading processes, showing excellent agreement with finite element simulations on fractured samples.
Article
Chemistry, Physical
Atanu Nandy, Saptarshi Mukherjee
Summary: This study reports a highly efficient artificial light harvesting system that uses polypeptide nanostructures as scaffolds. The combination of chromophores with the polypeptide nanostructures achieves an energy transfer efficiency of 92% and generates white light emission at a specific molar ratio of chromophores.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Physics, Multidisciplinary
Qi Zheng, Yu-Chen Zhuang, Ya-Ning Ren, Chao Yan, Qing-Feng Sun, Lin He
Summary: In this study, quasibound states in elliptical and circular graphene quantum dots were systematically investigated through experiments and theoretical calculations. It was found that bonding and antibonding molecular collapse states formed by two coupled atomic collapse states, and the antibonding state can change into a Klein-tunneling-induced quasibound state, revealing a deep connection between atomic collapse states and the Klein tunneling.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Organic
Rima Sengupta, Haruka Hashimoto, Yohei Haketa, Hayato Sakai, Taku Hasobe, Hiromitsu Maeda
Summary: A series of stable helical π-electronic cations based on ion pairs of abidipyrrin-Au-III complex have been prepared via ion-pair metathesis. The helical cation exhibits NIR absorption and phosphorescence emission, and forms solid-state ion-pairing assemblies with assembling modes depending on the properties of coexisting counteranions.
Article
Chemistry, Multidisciplinary
Recep Isci, Amir Rahimi Varzeghani, Kerem Kaya, Berkay Sutay, Emine Tekin, Turan Ozturk
Summary: Five novel fluorescent materials with desirable optical and electronic properties for OLED applications were systematically designed and synthesized. These materials exhibited mega Stokes shifts and solvatochromic behavior, making them promising for various applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Liang Fang, Yanping Xie, Feiya Xu, Miao Wang, Gang Wang
Summary: In this study, we developed a novel and highly efficient electrocatalyst N-CoP/NH2-BP for hydrogen evolution reaction (HER). The electrocatalyst consists of nitrogen-doped CoP nanocrystals grown on the surface of two-dimensional ammoniated black phosphorus (BP) nanosheets. The N-CoP/NH2-BP heterostructure exhibited excellent HER activity due to the synergistic effect between N-doped CoP and NH2-functionalized BP. This work not only provides a new and effective electrocatalyst, but also presents a straightforward strategy for designing phosphorene-based electrocatalysts.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
K. Imoto, I. Yamaguchi, A. Wang
Summary: This study synthesized pi-conjugated polymers bearing imidazolium and imidazolinium rings via Sonogashira and Suzuki-Miyaura coupling reactions, showing extended pi-conjugation along the polymer backbone and effective catalytic activity for CO2 electroreduction.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Gheorghe Lucian Pascut, Lucian Cosovanu, Kristjan Haule, Khandker F. Quader
Summary: Motivated by the recent discovery of superconductivity in infinite layer nickelates, the authors study the correlation and temperature phase diagram of LaNiO2 and NdNiO2, using embedded DMFT combined with DFT. Their study offers insight into the low-energy physics of the paramagnetic and magnetic states, shedding some light on the mechanism of superconductivity and lack of magnetic order in these systems.
COMMUNICATIONS PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Svitlana V. Shishkina, Alexander A. Ishchenko, Andrii V. Kulinich
Summary: This study presents an X-ray crystallographic characterization of a tetramethine merocyanine compound based on benzimidazole and thiobarbituric acid, revealing negative solvatochromism in organic solvents. The crystal structure features three non-equivalent dye molecules and one water molecule, forming specific π-stacked columns. The findings suggest that a single hydrogen bond has less impact on the electronic structure of merocyanine compounds in the crystal compared to pi-stacking and other multiple close-range interactions.
STRUCTURAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Svitlana Shishkina, Viktoriya V. Dyakonenko, Alexander A. Ishchenko, Andrii Kulinich
Summary: The concept of the ideal polymethine state is crucial in the theory of color of pi-conjugated organic compounds. Through an X-ray crystallographic study of a vinylogous series of merocyanines, it is found that achieving the ideal polymethine state in the crystal can be done through a careful choice of the donor-acceptor properties of the end-groups. The length of the polymethine chain has minimal impact on the electronic symmetry of these dyes in the solid state.
STRUCTURAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Valery N. Bliznyuk, Ayman F. Seliman, Nadezhda A. Derevyanko, Andrew Dugan, Alexander A. Ishchenko, Timothy A. DeVol
Summary: Plastic scintillators based on new organic fluorophores developed in this study show high radioluminescence when combined with a PVT matrix. The fluorophores can be prepared in different forms and applied for radiation detection. Mechanisms of energy transfer and conversion, as well as enhancements in scintillator performance for radiation detection, are discussed in detail.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Vladyslav Polishchuk, Andrii Kulinich, Sergey Suikov, Eduard Rusanov, Mykola Shandura
Summary: A novel series of mero-anionic polymethines of the D-π-A-π-A' type have been synthesized and their spectral properties studied. These dyes exhibit long-wavelength absorption maxima ranging from 594-777 nm, with a high molar absorbance up to 337 000 M-1 cm(-1). The fluorescence quantum yields of these dyes can reach up to 84% for those absorbing in the visible spectral range. The solvatochromism of these dyes is observed in different solvent pairs, with a hypsochromic shift in the absorption maximum when methanol is used as the solvent.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
T. V. Bezrodna, A. A. Ishchenko, L. F. Kosyanchuk, N. A. Derevyanko, O. I. Antonenko, V. I. Bezrodnyi
Summary: The luminescence spectral properties of two symmetrical indocyanine dyes with different substituents near nitrogen atoms were investigated in polyurethane matrices. The possibility of covalent bonding between the indocyanine dye and polyurethane was shown through analysis of IR spectra, which measured the reaction product between an indolenine salt and phenyl isocyanate, as well as the individual compounds of the salt and isocyanate.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2022)
Article
Optics
N. Ibrayev, E. Seliverstova, D. Temirbayeva, A. Ishchenko
Summary: The plasmonic effect of Ag nanoparticles on singlet-singlet and triplet-singlet energy transfer in organic molecules was studied. It was found that the plasmonic effect enhanced both types of energy transfer, leading to increased fluorescence and phosphorescence intensity, as well as improved transfer efficiency.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Tamara Bezrodna, Volodymyr Bezrodnyi, Alexander Ishchenko, Yurii Slominskii, Illia Sharanov
Summary: The spectral and nonlinear optical properties of new tricarbocyanine dyes, which are derivatives of benzo[cd]indole and absorb efficiently in the wavelength range of 1.05-1.08 μm, have been studied. Based on these dyes, passive Q-switches in liquid (ethanol solutions) and polymer (triplexes with dye-doped polyurethane films between optical glass substrates) forms have been developed for neodymium lasers. The Q-switches exhibit 100% modulation depth in generating ultrashort pulse trains and demonstrate a highly stable regime of passive mode-locking. Comparisons with existing analogues based on organic dyes, nanotubes, graphene, inorganic semiconductors, mirrors (SESAM), LiF:F-2(-), and Cr4+:YAG have shown advantages of the new Q-switches.
Article
Chemistry, Multidisciplinary
A. A. Ishchenko, I. V. Kurdyukova, Yu. L. Slominskii, I. P. Sharanov
Summary: It is shown that new benzo[cd]indole-based heptamethinecyanines (HMCs) have a short-lived photoexcited state and high light absorption in the range of neodymium lasers. The electronic structure and types of electronic transitions in HMCs are analyzed using DFT and TD-DFT methods. The influence of vibronic and intermolecular interactions on the short lifetime is considered. The advantages of HMCs for passive mode locking of lasers over known dyes with short lifetime are demonstrated.
THEORETICAL AND EXPERIMENTAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Andrii V. Kulinich, Alexander A. Ishchenko
Summary: Merocyanines are versatile and promising functional dyes with easily adjustable electronic structure. They have a wide range of practical properties and are extensively applied and studied in various fields. However, studying and designing merocyanines is a challenging task due to the complex nature of their electronic structure.
Article
Polymer Science
Dmitry G. Vyshnevsky, Valeriia N. Ovdenko, Valeriy A. Pavlov, Liudmyla Yu Gryshchuk, Nikolay A. Davidenko, Alexander A. Ishchenko
Summary: A series of 4,40-substituted 3-hydroxyethyl-pentaza-1,4-dienes were synthesized and their photolysis, photosensitivity, and stability were investigated. It was found that electron donating substituents increased photosensitivity, while electron withdrawing substituents increased photolytic stability. The compounds were also studied as radical polymerization initiators.
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2023)
Article
Chemistry, Physical
Niyazbek Kh. Ibrayev, Evgeniya V. Seliverstova, Rashid R. Valiev, Assel E. Kanapina, Alexander A. Ishchenko, Andrii V. Kulinich, Theo Kurten, Dage Sundholm
Summary: This study experimentally and theoretically investigated the effect of localized surface plasmon resonance (LSPR) of a system comprising a highly dipolar merocyanine dye and a silver nanoparticle (NP). A theoretical model was developed to estimate the fluorescence quantum yield using quantum chemical calculations. The results showed that the presence of plasmonic NPs increased the fluorescence quantum yield by a factor of two, and the LSPR effect could be enhanced or diminished depending on the dielectric constant of the environment.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Chemistry, Multidisciplinary
A. A. Ishchenko, A. T. Syniugina
Summary: Different approaches to the development of promising photosensitizers based on polymethine dyes (PD) for photodynamic therapy are discussed, including the influence of heavy atoms, chromophore interaction, electron transfer, and free radicals on singlet oxygen generation. The mechanisms of PD photodynamic activity under hypoxia conditions are considered, as well as the structural modifications for targeted delivery to cancer cells.
THEORETICAL AND EXPERIMENTAL CHEMISTRY
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
I. Kurdyukova, A. A. Ishchenko, M. Bogdanovich, S. L. Bondarev, A. A. Romanenko, A. G. Ryabtsev, G. Ryabtsev
Summary: We selected cationic polymethine dyes with different structures as the passive Q-switch for a diode-pumped solid-state neodymium laser. Among them, a certain dye closely matched the desired absorption characteristics. Quantum-chemical calculations and taking into account the polarity of the medium explained the long-wavelength and higher electronic transitions of the dye. This dye was successfully used as a laser Q-switch, achieving passive mode locking in diode-pumped neodymium lasers.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Materials Science, Multidisciplinary
I. M. Kobasa, I. Kondrachuk, I. Kurdyukova, A. A. Ishchenko, A. Ya Velyka
Summary: The study investigated various parameters of the polymethine dye D and synthesized a heterostructure titanium dioxide/dye/polye-poxypropylcarbazole. Diffuse reflectance spectra were recorded and transformed into absorbance spectra, revealing key parameters related to the absorption characteristics of the dye. The photocatalytic activity of the heterostructure was determined for methylene blue reduction under different light conditions, with analysis conducted on the energy transformation processes within the structure.
FUNCTIONAL MATERIALS
(2021)
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)