251
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Stój A, Czernecki T, Domagała D. Authentication of Polish Red Wines Produced from Zweigelt and Rondo Grape Varieties Based on Volatile Compounds Analysis in Combination with Machine Learning Algorithms: Hotrienol as a Marker of the Zweigelt Variety. Molecules 2023; 28:molecules28041961. [PMID: 36838950 PMCID: PMC9967794 DOI: 10.3390/molecules28041961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
The aim of this study was to determine volatile compounds in red wines of Zweigelt and Rondo varieties using HS-SPME/GC-MS and to find a marker and/or a classification model for the assessment of varietal authenticity. The wines were produced by using five commercial yeast strains and two types of malolactic fermentation. Sixty-seven volatile compounds were tentatively identified in the test wines; they represented several classes: 9 acids, 24 alcohols, 2 aldehydes, 19 esters, 2 furan compounds, 2 ketones, 1 sulfur compound and 8 terpenes. 3,7-dimethyl-1,5,7-octatrien-3-ol (hotrienol) was found to be a variety marker for Zweigelt wines, since it was detected in all the Zweigelt wines, but was not present in the Rondo wines at all. The relative concentrations of volatiles were used as an input data set, divided into two subsets (training and testing), to the support vector machine (SVM) and k-nearest neighbor (kNN) algorithms. Both machine learning methods yielded models with the highest possible classification accuracy (100%) when the relative concentrations of all the test compounds or alcohols alone were used as input data. An evaluation of the importance value of subsets consisting of six volatile compounds with the highest potential to distinguish between the Zweigelt and Rondo varieties revealed that SVM and kNN yielded the best classification models (F-score of 1, accuracy of 100%) when 3-ethyl-4-methylpentan-1-ol or 3,7-dimethyl-1,5,7-octatrien-3-ol (hotrienol) or subsets containing one or both of them were used. Moreover, the best SVM model (F-score of 1) was built with a subset containing 2-phenylethyl acetate and 3-(methylsulfanyl)propan-1-ol.
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Affiliation(s)
- Anna Stój
- Department of Biotechnology, Microbiology and Human Nutrition, Faculty of Food Science and Biotechnology, University of Life Sciences, 8 Skromna Street, 20-704 Lublin, Poland
- Correspondence: (A.S.); (D.D.)
| | - Tomasz Czernecki
- Department of Biotechnology, Microbiology and Human Nutrition, Faculty of Food Science and Biotechnology, University of Life Sciences, 8 Skromna Street, 20-704 Lublin, Poland
| | - Dorota Domagała
- Department of Applied Mathematics and Computer Science, Faculty of Production Engineering, University of Life Sciences in Lublin, 28 Głęboka Street, 20-612 Lublin, Poland
- Correspondence: (A.S.); (D.D.)
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252
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Jäger A, Steinberg L, Mickoleit E, Thol M. Residual Entropy Scaling for Long-Chain Linear Alkanes and Isomers of Alkanes. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- A. Jäger
- Institute of Power Engineering, Faculty of Mechanical Science and Engineering, Technische Universität Dresden, Helmholtzstraße 14, 01069 Dresden, Germany
| | - L. Steinberg
- Thermodynamics, Ruhr University Bochum, 44780 Bochum, Germany
| | - E. Mickoleit
- Institute of Power Engineering, Faculty of Mechanical Science and Engineering, Technische Universität Dresden, Helmholtzstraße 14, 01069 Dresden, Germany
| | - M. Thol
- Thermodynamics, Ruhr University Bochum, 44780 Bochum, Germany
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253
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Mishima O, Sumita T. Equation of State of Liquid Water Written by Simple Experimental Polynomials and the Liquid-Liquid Critical Point. J Phys Chem B 2023; 127:1414-1421. [PMID: 36744620 DOI: 10.1021/acs.jpcb.2c08342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Experimental and theoretical evidence has been accumulating to support the liquid-liquid critical point (LLCP) hypothesis for water. However, no agreement has yet been reached on the pressure and temperature of LLCP. Here we made simple experimental equations that reproduced the volume of liquid water measured over a wide pressure-temperature range. They were polynomials that calculate pressure using volume and temperature as variables, and coefficients were determined by the method of least-squares. We analyzed the polynomials by changing the volume data and the number of terms in the polynomials and extrapolated them slightly to low temperatures. Consequently, the available experimental volume of liquid water indicated (but did not prove) the existence of LLCP at low temperature. Representative polynomials suggested that LLCP locates around 105 ± ∼ 9 MPa, 207 ± ∼ 5 K, and 0.993 ± ∼ 0.009 cm3/g.
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Affiliation(s)
- Osamu Mishima
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki305-0044, Japan
| | - Tatsuya Sumita
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki305-8567, Japan
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254
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Lv G, Li X, Jensen E, Soman B, Tsao YH, Evans CM, Cahill DG. Dynamic Covalent Bonds in Vitrimers Enable 1.0 W/(m K) Intrinsic Thermal Conductivity. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Guangxin Lv
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Xiaoru Li
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Elynn Jensen
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Bhaskar Soman
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yu-Hsuan Tsao
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Christopher M. Evans
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David G. Cahill
- Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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255
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Finch PM, Granowitz ZN, Streicher JW, Krish A, Strand CL, Hanson RK. Shock-Tube Measurements of Atomic Nitrogen Collisional Excitation in 8000-12000 K Partially Ionized Nitrogen-Argon Mixtures. J Phys Chem A 2023; 127:1532-1546. [PMID: 36745871 DOI: 10.1021/acs.jpca.2c07839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We report on shock-tube experiments measuring the collisional excitation of atomic nitrogen using tunable diode laser absorption spectroscopy (TDLAS). Conditions behind the reflected shocks ranged from 8000 to 12000 K and 0.1 to 1.1 atm in mixtures of 1 or 2% molecular nitrogen (N2) in argon (Ar). Absorption from the transition between atomic nitrogen quantum states 4P to 4D at 868 nm was used to monitor the formation of electronically excited nitrogen. Population measurements of the 4P state were made at a rate of 50 kHz. In connection with these measurements, a multitemperature kinetic mechanism is proposed for nitrogen excitation. Measurements suggest a multistage process. In early test times, a period of induction due to N2 dissociation is followed by a rise via heavy particle excitation. The dominant channel causing this excitation is believed to be N + N ↔ N(4P) + N with a measured forward rate constant of 3.65 × 10-18 exp(-119892/T) [m3/s]. As test time evolves, the excitation of 4P, referred to as N*, is subsequently interrupted and then resumes, as the kinetic environment becomes increasingly electron-dominated. The most impactful reactions of the mechanism are optimized to reduce the residual between simulations and the measurements. The measured N* populations indicate strong, though indirect, sensitivity to adjacent processes, including the excitation of metastable nitrogen, and ionization channels.
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Affiliation(s)
- Peter M Finch
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
| | - Zev N Granowitz
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
| | - Jesse W Streicher
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
| | - Ajay Krish
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
| | - Christopher L Strand
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
| | - Ronald K Hanson
- Department of Mechanical Engineering, High Temperature Gasdynamics Laboratory, Stanford University, 452 Escondido Mall, Bldg. 520, Stanford, California94305, United States
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256
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Bianconi T, Cesaretti A, Mancini P, Montegiove N, Calzoni E, Ekbote A, Misra R, Carlotti B. Room-Temperature Phosphorescence and Cellular Phototoxicity Activated by Triplet Dynamics in Aggregates of Push-Pull Phenothiazine-Based Isomers. J Phys Chem B 2023; 127:1385-1398. [PMID: 36735941 PMCID: PMC9940226 DOI: 10.1021/acs.jpcb.2c07717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, we report a comprehensive time-resolved spectroscopic investigation of the excited-state deactivation mechanism in three push-pull isomers characterized by a phenothiazine electron donor, a benzothiazole electron acceptor, and a phenyl π-bridge where the connection is realized at the relative ortho, meta, and para positions. Spin-orbit charge-transfer-induced intersystem crossing takes place with high yield in these all-organic donor-acceptor compounds, leading also to efficient production of singlet oxygen. Our spectroscopic results give clear evidence of room-temperature phosphorescence not only in solid-state host-guest matrices but also in highly biocompatible aggregates of these isomers produced in water dispersions, as rarely reported in the literature. Moreover, aggregates of the isomers could be internalized by lung cancer and melanoma cells and display bright luminescence without any dark cytotoxic effect. On the other hand, the isomers showed significant cellular phototoxicity against the tumor cells due to light-induced reactive oxygen species generation. Our findings strongly suggest that nanoaggregates of the investigated isomers are promising candidates for imaging-guided photodynamic therapy.
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Affiliation(s)
- Tommaso Bianconi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Alessio Cesaretti
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Pietro Mancini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Nicolò Montegiove
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Eleonora Calzoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Anupama Ekbote
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
| | - Rajneesh Misra
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India
| | - Benedetta Carlotti
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, 06123 Perugia, Italy
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257
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Larenkov A, Mitrofanov I, Pavlenko E, Rakhimov M. Radiolysis-Associated Decrease in Radiochemical Purity of 177Lu-Radiopharmaceuticals and Comparison of the Effectiveness of Selected Quenchers against This Process. Molecules 2023; 28:molecules28041884. [PMID: 36838872 PMCID: PMC9967390 DOI: 10.3390/molecules28041884] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
The radiolytic degradation of vector molecules is a major factor affecting the shelf life of therapeutic radiopharmaceuticals. The development of time-stable dosage forms of radiopharmaceuticals is the key to their successful implementation in clinical practice. Using [177Lu]Lu-PSMA-617 molecule as an example, the time dependence of the change in radiochemical purity (RCP, %) under radiolysis conditions was studied. The dependence of [177Lu]Lu-PSMA-617 radiolysis on parameters such as time, radionuclide activity, buffer agent concentration, precursor amount, and preparation volume was evaluated. It was shown that the absorbed dose was the dominant factor influencing the RCP. The RCP value is inversely proportional to the absorbed dose in the [177Lu]Lu-PSMA-617 preparation and has an exponential dependence. The lutetium-177 dose factor ψ (Gy·mL·MBq-1) and PSMA-617 concentration-dependent dose constant κ (Gy-1) were evaluated for absorbed dose estimation via computer modeling, chemical dosimetry, and radiochemical purity monitoring under various conditions. The further refinement and application of the dependencies found can be useful for predicting the RCP value at the stage of optimizing the composition of the finished dosage form of therapeutic radiopharmaceuticals. The influence of the buffer agent (sodium acetate) concentration on [177Lu]Lu-PSMA-617 radiolytic degradation was shown and should be considered both when developing a dosage form, and when comparing the results of independent studies. The effectiveness of the addition of various stabilizing agents, such as DMSA, cysteine, gentisic acid, vanillin, methionine, adenine, dobesilic acid, thymine, uracil, nicotinamide, meglumine, and mannitol, in suppressing the effects of radiolysis was evaluated.
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258
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Dmitryuk NA, Mistryukova LA, Kryuchkov NP, Khrapak SA, Yurchenko SO. Diffusion mobility increases linearly on liquid binodals above triple point. Sci Rep 2023; 13:2815. [PMID: 36797382 PMCID: PMC9935557 DOI: 10.1038/s41598-022-26390-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/14/2022] [Indexed: 02/18/2023] Open
Abstract
Self-diffusion in fluids has been thoroughly studied numerically, but even for simple liquids just a few scaling relationships are known. Relations between diffusion, excitation spectra, and character of the interparticle interactions remain poorly understood. Here, we show that diffusion mobility of particles in simple fluids increases linearly on the liquid branch of the liquid-gas binodal, from the triple point almost up to the critical point. With molecular dynamics simulations, we considered bulk systems of particles interacting via a generalised Lennard-Jones potential, as well as ethane. Using a two-oscillator model for the analysis of excitations, we observed that the mobility (inverse diffusion) coefficient on the liquid-gas binodal increases linearly above the triple point until the dispersion of high-frequency spectra has a solid-like (oscillating) shape. In terms of a separate mode analysis (of longitudinal and transverse modes), this corresponds to crossed modes in the intermediate range of wavenumbers q, between the hydrodynamic regime (small q) and the regime of individual particle motion (large q). The results should be interesting for a broad community in physics and chemistry of fluids, since self-diffusion is among the most fundamental transport phenomena, important for prospective chemical technologies, micro-, nanofluidics, and biotechnologies.
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Affiliation(s)
- Nikita A. Dmitryuk
- grid.61569.3d0000 0001 0405 5955Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow, Russia 105005
| | - Lucia A. Mistryukova
- grid.61569.3d0000 0001 0405 5955Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow, Russia 105005
| | - Nikita P. Kryuchkov
- grid.61569.3d0000 0001 0405 5955Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow, Russia 105005
| | - Sergey A. Khrapak
- grid.61569.3d0000 0001 0405 5955Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow, Russia 105005
| | - Stanislav O. Yurchenko
- grid.61569.3d0000 0001 0405 5955Bauman Moscow State Technical University, 2nd Baumanskaya Street 5, Moscow, Russia 105005
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259
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Sharma S, Abeywardane K, Goldsmith CF. Theory-Based Mechanism for Fluoromethane Combustion I: Thermochemistry and Abstraction Reactions. J Phys Chem A 2023; 127:1499-1511. [PMID: 36745864 DOI: 10.1021/acs.jpca.2c06623] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new detailed chemical kinetic mechanism is presented for small fluorinated hydrocarbons. Ab initio electronic structure theory is used to provide heats of formation with subchemical accuracy. The ANL0 method is extended to include fluorine. The resulting heats of formation at 0 K are in excellent agreement with 36 benchmark species in the Active Thermochemical Tables, with a mean error of μ = -0.02 kJ/mol and a standard deviation of σ = 0.91 kJ/mol. The thermophysical properties for 92 small-molecule H/C/O/F species are computed. The rate coefficients for 40+ H-abstraction reactions involving H, O, F, OH, OF, HO2, and various methyl radicals with CH4, CH3F, CH2F2, CHF3, CH2O, and CHFO are discussed. The computed rate constants are in excellent agreement with the available literature. Additionally, 30+ rate constants are provided for F abstraction, which are several orders of magnitude smaller than H abstraction. The thermophysical properties and rate constants are provided in a mechanism. This mechanism is the first in a series of theory-based investigations into the thermal destruction of per- and polyfluorinated species.
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Affiliation(s)
- Siddha Sharma
- Chemical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Kento Abeywardane
- Chemical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - C Franklin Goldsmith
- Chemical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
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260
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Hrahsheh F, Wilemski G. Effects of molecular size and orientation on the interfacial properties and wetting behavior of water/ n-alkane systems: a molecular-dynamics study. Phys Chem Chem Phys 2023; 25:5808-5816. [PMID: 36744733 DOI: 10.1039/d2cp05735b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Molecular dynamics simulations (MD) are performed to study the interfacial structure/tension and wetting behavior of water/n-alkane systems (water/nC5 to water/nC16 where nCx = CxH(2x + 2)). In particular, we study complete-to-partial wetting transitions by changing the n-alkane chain length (NC) at a constant temperature, T = 295 K. Simulations are carried out with a united-atom TraPPE model for n-alkanes and the TIP4P-2005 model of water. Simulation results are in excellent agreement with the initial spreading coefficients and contact angles calculated using experimental values of the surface and interfacial tensions. In addition, it has been determined that water/(nC5-nC7) and water/(nC8-nC16), respectively, exhibit complete and partial initial wetting modes. Simulations show that the interfacial structures of water/(nC5-nC7) are different from water/(nC8-nC16) systems. In the latter, water preferentially orients near the interface to increase the number of hydrogen bonds and the charge and mass densities. Moreover, the orientation of n-alkane molecules at water/(nC8-nC16) interfaces has a long-range persistence, resulting in layered structures that increase with NC. In addition, simulation results of the orientational order parameter Sz show alignment behavior of the n-alkane molecules with respect to the interfaces. Simulations predict that the central segments of n-alkane are strongly packed in the interfaces while the end segments (methyl groups) form smaller peaks in the outer edge of the layer. This observation confirms the "horseshoe" or "C-shaped" structure of n-alkane molecules in the water/n-alkane interfaces. At constant temperature, the interface widths of both water and the n-alkanes decrease with increasing n-alkane molecular length. These results suggest that increasing the n-alkane chain length affects the water/n-alkane interfacial properties in a manner similar to that of cooling.
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Affiliation(s)
- Fawaz Hrahsheh
- Higher Colleges of Technology, ETS, MZWC, Abu Dhabi, 58855, United Arab Emirates.
| | - Gerald Wilemski
- Department of Physics, Missouri University of Science and Technology, Rolla, MO 65409, USA.
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261
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Franciosini G, Battistoni G, Cerqua A, De Gregorio A, De Maria P, De Simoni M, Dong Y, Fischetti M, Marafini M, Mirabelli R, Muscato A, Patera V, Salvati F, Sarti A, Sciubba A, Toppi M, Traini G, Trigilio A, Schiavi A. GPU-accelerated Monte Carlo simulation of electron and photon interactions for radiotherapy applications. Phys Med Biol 2023; 68. [PMID: 36356308 DOI: 10.1088/1361-6560/aca1f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 11/10/2022] [Indexed: 11/12/2022]
Abstract
Objective. The Monte Carlo simulation software is a valuable tool in radiation therapy, in particular to achieve the needed accuracy in the dose evaluation for the treatment plans optimisation. The current challenge in this field is the time reduction to open the way to many clinical applications for which the computational time is an issue. In this manuscript we present an innovative GPU-accelerated Monte Carlo software for dose valuation in electron and photon based radiotherapy, developed as an update of the FRED (Fast paRticle thErapy Dose evaluator) software.Approach. The code transports particles through a 3D voxel grid, while scoring their energy deposition along their trajectory. The models of electromagnetic interactions in the energy region between 1 MeV-1 GeV available in literature have been implemented to efficiently run on GPUs, allowing to combine a fast tracking while keeping high accuracy in dose assessment. The FRED software has been bench-marked against state-of-art full MC (FLUKA, GEANT4) in the realm of two different radiotherapy applications: Intra-Operative Radio Therapy and Very High Electron Energy radiotherapy applications.Results. The single pencil beam dose-depth profiles in water as well as the dose map computed on non-homogeneous phantom agree with full-MCs at 2% level, observing a gain in processing time from 200 to 5000.Significance. Such performance allows for computing a plan with electron beams in few minutes with an accuracy of ∼%, demonstrating the FRED potential to be adopted for fast plan re-calculation in photon or electron radiotherapy applications.
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Affiliation(s)
- G Franciosini
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
| | - G Battistoni
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Milano, Italy
| | - A Cerqua
- Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - A De Gregorio
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
| | - P De Maria
- Scuola post-laurea in Fisica Medica, Dipartimento di Scienze e Biotecnologie medico-chirurgiche, Sapienza Universitá di Roma, Roma, Italy
| | - M De Simoni
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
| | - Y Dong
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Milano, Italy
| | - M Fischetti
- Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - M Marafini
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Museo Storico della Fisica e Centro Studi e Ricerche 'E. Fermi', Roma, Italy
| | - R Mirabelli
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
| | - A Muscato
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Scuola post-laurea in Fisica Medica, Dipartimento di Scienze e Biotecnologie medico-chirurgiche, Sapienza Universitá di Roma, Roma, Italy
| | - V Patera
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - F Salvati
- Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - A Sarti
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - A Sciubba
- Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy.,Istituto Nazionale di Fisica Nucleare (INFN)- Laboratori Nazionali di Frascati, Frascati, Italy
| | - M Toppi
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
| | - G Traini
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy
| | - A Trigilio
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy
| | - A Schiavi
- Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Roma, Italy.,Dipartimento di Scienze di Base e Applicate per Ingegneria, Sapienza Università di Roma, Roma, Italy
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262
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Borovkov VI, Bagryansky VA, Molin YN. A spin statistical factor in electron transfer to oxygen molecules. Phys Chem Chem Phys 2023; 25:5397-5405. [PMID: 36723236 DOI: 10.1039/d2cp05401a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The oxygen molecule in its ground triplet state (3O2) is a strong electron acceptor. Electron transfer to 3O2 to form a superoxide anion is an important elementary step in many chemical and biological processes. If this transfer occurs from a spin 1/2 paramagnetic particle where the total spin of the reactants is equal to 3/2, the reaction is spin-forbidden. In liquids, the significant dipole-dipole electron spin interaction in 3O2 is supposed to mix the non-reactive quartet and reactive doublet states at a time scale of ∼10 ps, thus avoiding the barrier. To elucidate the role of spin effects in the electron transfer to 3O2, we studied this reaction over a range of more than three orders of magnitude of the relative diffusion coefficient (D) of the reactants. It was found that spin effects during electron transfer to 3O2 become insignificant when D < 10-9 m2 s-1. In the range of intermediate D values (10-9 m2 s-1 < D < 10-8 m2 s-1) - which corresponds to some reactions of oxygen with small radicals in aqueous solutions - the effective spin factor decreases with increasing D value. If D > 10-8 m2 s-1, the electron transfer is spin-selective with the spin factor of 1/3 as determined by the spin statistics. At such D values, the reaction encounter time may exceed the expected quartet-doublet mixing time by almost an order of magnitude. The reduced rate of quartet-doublet transitions within the encounter complex in the reaction with 3O2 has been explained by the spin-exchange interaction and chemical Zeno effect.
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Affiliation(s)
- Vsevolod I Borovkov
- Voevodsky Institute of Chemical Kinetics and Combustion, SB RAS, Institutskaya, 3, 630090 Novosibirsk, Russia. .,Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
| | - Victor A Bagryansky
- Voevodsky Institute of Chemical Kinetics and Combustion, SB RAS, Institutskaya, 3, 630090 Novosibirsk, Russia. .,Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
| | - Yuri N Molin
- Voevodsky Institute of Chemical Kinetics and Combustion, SB RAS, Institutskaya, 3, 630090 Novosibirsk, Russia.
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263
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Karabulut E, Celik FA, Korkmaz ET. The long-lived reactive nitrogen species in the troposphere: DFTB model for atmospheric applications. Phys Chem Chem Phys 2023; 25:5569-5581. [PMID: 36727207 DOI: 10.1039/d2cp05344f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The longest lived reactive NO2 molecule formation in a dry and clean air environment under a high-temperature shock wave was investigated under three basic reactions (R2 for the O + NO system, R6 for the NO + NO3 system, and R7 for the NO + O3 system) in the atmospheric environment. With certain approaches, a DFTB3 model was used, which gave results close to the density functional theory. In the calculations, the related reactions up to 250 ps were examined at individual specific temperatures, and the temperature ranges that contributed to the formation of the NO2 molecule were determined. Moreover, a shock wave with both heating and cooling channels was applied only on R2 to see whether molecular concentrations were in good agreement with atmospheric information. The reaction products were examined under a shock wave of about 20 ps. At the end of the study, the applicability of the DFTB model to atmospheric systems was demonstrated by comparing it with experimental data and information. QCT approach was also used for the calculation of reaction rate constants of only O2-formation on the O + NO system. Here, all systems are focused on nitrogen species containing oxygen. In particular, the highest-population NO molecule that emerged in the lightning flash event was used as the reactant, while systems existing with the longest lived NO2 in the atmosphere after the lightning flash were focused in the product channel. As a result of the study, the hypothesis of geophysicists that almost all NO2 formed in the lightning flash event originates from the NO + O system was disproved. It has been proven that the presence of NO3 molecules that can withstand high temperatures in such systems should be evaluated.
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Affiliation(s)
- Ezman Karabulut
- Vocational School of Health Services, Bitlis Eren University, 13000 Bitlis, Turkey
| | - Fatih Ahmet Celik
- Faculty of Arts&Sciences, Physics Department, Bitlis Eren University, 13000 Bitlis, Turkey
| | - Ebru Tanboğa Korkmaz
- Faculty of Arts&Sciences, Physics Department, Bitlis Eren University, 13000 Bitlis, Turkey
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264
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Li S, Chu T. Improving tumor/muscle and tumor/blood ratios of 99mTc-labeled nitroimidazole propylene amine oxime (PnAO) complexes with ethylene glycol linkers. Bioorg Med Chem Lett 2023; 82:129154. [PMID: 36736496 DOI: 10.1016/j.bmcl.2023.129154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 02/02/2023]
Abstract
Three nitroimidazole propylene amine oxime (PnAO) derivatives with different lengths of ethylene glycol chain were synthesized and radiolabeled with 99mTc. The radiochemical purities of three 99mTc-labeled complexes, oxo[[6,6,12,12-tetramethyl-1,17-bis(2-nitro-1H-imidazol-1-yl)-3,15-dioxa-7,11-diazaheptadecane-5, 13-dione dioximato] (3-)-N,N',N'',N''']-technetium-99m (99mTc-2P2O1), oxo[[9,9,15,15-tetramethyl-1,23-bis(2-nitro-1H-imidazol-1-yl)-3,6,18,21-tetraoxa-10, 14-diazatricosane-8,16-dione dioximato] (3-)-N,N',N'',N''']-technetium-99m (99mTc-2P2O2) and oxo[[15,15,21,21-tetramethyl-1,35-bis(2-nitro-1H-imidazol-1-yl)-3,6,9,12,24,27,30,33-octaoxa-16,20-diazapentatriacontane-14,22-dione dioximato] (3-)-N,N',N'',N''']-technetium-99m (99mTc-2P2O4), were above 90%, and they were all stable both in vitro and in vivo. The hypoxia/normoxia uptake ratios of the three complexes were 2.92 ± 0.61, 2.63 ± 0.64 and 2.29 ± 0.67 in S180 cellular uptake assay (4 h). All of these complexes presented good hypoxia selectivity. The results of biodistribution studies in S180 tumor-bearing mice revealed that the tumor/muscle (T/M) ratios (7.20 ± 2.37, 7.19 ± 1.75, 5.56 ± 1.10) and tumor/blood (T/B) ratios (1.66 ± 0.34, 1.73 ± 0.25, 2.13 ± 0.19) at 4 h of three complexes were significantly higher than those of 99mTc-2P2 (3.24 ± 0.65, 0.81 ± 0.34) without the ethylene glycol chains. Among them, 99mTc-2P2O4 had the best T/B ratio. The new complexes have higher tumor/blood and tumor/muscle ratios by adding suitable length of ethylene glycol chain. It is helpful for the design and optimization of hypoxic imaging agents.
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Affiliation(s)
- Shuo Li
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Taiwei Chu
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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265
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George MAR, Dopfer O. Microhydrated clusters of a pharmaceutical drug: infrared spectra and structures of amantadineH +(H 2O) n. Phys Chem Chem Phys 2023; 25:5529-5549. [PMID: 36723361 DOI: 10.1039/d2cp04556g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Solvation of pharmaceutical drugs has an important effect on their structure and function. Analysis of infrared photodissociation spectra of amantadineH+(H2O)n=1-4 clusters in the sensitive OH, NH, and CH stretch range by quantum chemical calculations (B3LYP-D3/cc-pVTZ) provides a first impression of the interaction of this pharmaceutically active cation with water at the molecular level. The size-dependent frequency shifts reveal detailed information about the acidity of the protons of the NH3+ group of N-protonated amantadineH+ (AmaH+) and the strength of the NH⋯O and OH⋯O hydrogen bonds (H-bonds) of the hydration network. The preferred cluster growth begins with sequential hydration of the NH3+ group by NH⋯O ionic H-bonds (n = 1-3), followed by the extension of the solvent network through OH⋯O H-bonds. However, smaller populations of cluster isomers with an H-bonded solvent network and free N-H bonds are already observed for n ≥ 2, indicating the subtle competition between noncooperative ion hydration and cooperative H-bonding. Interestingly, cyclic water ring structures are identified for n ≥ 3, each with two NH⋯O and two OH⋯O H-bonds. Despite the increasing destabilization of the N-H proton donor bonds upon gradual hydration, no proton transfer to the (H2O)n solvent cluster is observed up to n = 4. In addition to ammonium cluster ions, a small population of microhydrated iminium isomers is also detected, which is substantially lower for the hydrophilic H2O than for the hydrophobic Ar environment.
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Affiliation(s)
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
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266
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Tomaník L, Rulíšek L, Slavíček P. Redox Potentials with COSMO-RS: Systematic Benchmarking with Different Databases. J Chem Theory Comput 2023; 19:1014-1022. [PMID: 36657082 DOI: 10.1021/acs.jctc.2c00919] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Recent techniques of computational electrochemistry can yield redox potentials with accuracy as good as 0.1 V. Yet, many such methods are not universal, easy to use, or computationally efficient. Herein, we provide a systematic benchmarking of a relatively cheap and straightforward computational approach for fairly accurate computations of redox potentials. It is based on a combination of the conductor-like screening model for real solvents (COSMO-RS) and the density functional theory (DFT). The benchmarking is done with databases covering diverse redox systems, including transition-metal aquacomplexes and various organic and inorganic compounds. In addition, we also present our own test set aiming at maximum chemical diversity and maximum range of redox potential values. We assess the performance of the fairly efficient computational protocol combining the COSMO-RS with the BP86 DFT functional. This is done by calibrating it against different high-level state-of-the-art techniques, in particular, polarizable continuum model (PCM) connected to composite G3(MP2,CC)(+) method, domain-based pair natural orbital implementation of coupled cluster theory, or complete basis set CBS-QB3 method. We also elaborate on the absolute reduction potential value of standard hydrogen electrode to be used with COSMO-RS, and we propose the value of approx. 4.4 V. The COSMO-RS/BP86-D3(BJ) combination outperforms other methods on a wide range of redox systems. However, we show that its accuracy is based on a balanced error cancelation and, therefore, it cannot be further systematically improved. As a result, the proposed procedure represents a pragmatic choice for large-scale screening, yet it could be combined with more advanced methods for detailed studies.
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Affiliation(s)
- Lukáš Tomaník
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28Prague 6, Czech Republic
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 166 10Praha 6, Czech Republic
| | - Petr Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28Prague 6, Czech Republic
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267
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Yamamoto Y, Baruah T, Chang PH, Romero S, Zope RR. Self-consistent implementation of locally scaled self-interaction-correction method. J Chem Phys 2023; 158:064114. [PMID: 36792502 DOI: 10.1063/5.0130436] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Recently proposed local self-interaction correction (LSIC) method [Zope et al., J. Chem. Phys. 151, 214108 (2019)] is a one-electron self-interaction-correction (SIC) method that uses an iso-orbital indicator to apply the SIC at each point in space by scaling the exchange-correlation and Coulomb energy densities. The LSIC method is exact for the one-electron densities, also recovers the uniform electron gas limit of the uncorrected density functional approximation, and reduces to the well-known Perdew-Zunger SIC (PZSIC) method as a special case. This article presents the self-consistent implementation of the LSIC method using the ratio of Weizsäcker and Kohn-Sham kinetic energy densities as an iso-orbital indicator. The atomic forces as well as the forces on the Fermi-Löwdin orbitals are also implemented for the LSIC energy functional. Results show that LSIC with the simplest local spin density functional predicts atomization energies of the AE6 dataset better than some of the most widely used generalized-gradient-approximation (GGA) functional [e.g., Perdew-Burke-Ernzerhof (PBE)] and barrier heights of the BH6 database better than some of the most widely used hybrid functionals (e.g., PBE0 and B3LYP). The LSIC method [a mean absolute error (MAE) of 0.008 Å] predicts bond lengths of a small set of molecules better than the PZSIC-LSDA (MAE 0.042 Å) and LSDA (0.011 Å). This work shows that accurate results can be obtained from the simplest density functional by removing the self-interaction-errors using an appropriately designed SIC method.
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Affiliation(s)
- Yoh Yamamoto
- Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, USA
| | - Tunna Baruah
- Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, USA
| | - Po-Hao Chang
- Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, USA
| | - Selim Romero
- Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, USA
| | - Rajendra R Zope
- Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, USA
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268
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Komarov K, Park W, Lee S, Zeng T, Choi CH. Accurate Spin-Orbit Coupling by Relativistic Mixed-Reference Spin-Flip-TDDFT. J Chem Theory Comput 2023; 19:953-964. [PMID: 36655271 DOI: 10.1021/acs.jctc.2c01036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Relativistic mixed-reference spin-flip (MRSF)-TDDFT is developed considering the spin-orbit coupling (SOC) within the mean-field approximation. The resulting SOC-MRSF faithfully reproduces the experiments with very high accuracy, which is also consistent with the values by four-component (4c) relativistic CASSCF and 4c-CASPT2 in the spin-orbit-energy splitting calculations of the C, Si, and Ge atoms. Even for the fifth-row element Sn, the SOC-MRSF yielded accurate splittings (∼ 3 % error). In the SOC calculations of the molecular 4-thiothymine with a third-row element, SOC-MRSF values are in excellent agreement with those of the SO-GMC-QDPT2 level, regardless of geometries and exchange-correlation functionals. The same SOC-MRSF predicted the anticipated chance of S1 (nπ*) → T1 (ππ*) intersystem crossing, even in thymine with only second-row elements. With its accuracy and practicality, thus, SOC-MRSF is a promising electronic structure protocol in challenging situations such as nonadiabatic molecular dynamics (NAMD) incorporating both internal conversions and intersystem crossings in large systems.
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Affiliation(s)
- Konstantin Komarov
- Center for Quantum Dynamics, Pohang University of Science and Technology, Pohang37673, South Korea
| | - Woojin Park
- Department of Chemistry, Kyungpook National University, Daegu41566, South Korea
| | - Seunghoon Lee
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California91125, USA
| | - Tao Zeng
- Department of Chemistry, York University, Toronto, ONM3J 1P3, Canada
| | - Cheol Ho Choi
- Department of Chemistry, Kyungpook National University, Daegu41566, South Korea
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269
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Zhang RJ, Chai BL, Xu H, Zheng TF, Zhu ZH, Peng Y, Chen JL, Liu SJ, Wen HR. Enhanced Heterogeneous Catalytic Activity of Peroxymonosulfate for Rhodamine B Degradation via a Co II-Based Metal-Organic Framework. Inorg Chem 2023; 62:2760-2768. [PMID: 36724472 DOI: 10.1021/acs.inorgchem.2c03888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A stable metal-organic framework with the formula {[Co(BBZB)(IPA)]·H2O}n (JXUST-23, BBZB = 4,7-bis(1H-benzimidazole-1-yl)-2,1,3-benzothiadiazole and H2IPA = isophthalic acid) was constructed by incorporating Co2+ ions and two conjugated ligands under solvothermal conditions. JXUST-23 takes a dinuclear cluster-based layer structure with a porosity of 2.7%. In this work, JXUST-23 was used to activate peroxymonosulfate (PMS) to degrade rhodamine B (RhB), a difficult-to-degrade pollutant in water. Compared with pure PMS or JXUST-23, the JXUST-23/PMS system displays the best degradation ability of RhB in neutral solution. When the mass ratio of JXUST-23 to PMS was 2:3, 99.72% of RhB (50 ppm) was removed within 60 min, and the reaction rate was 0.1 min-1. Furthermore, free radical quenching experiments show that SO4•- was the main free radical during the process of RhB degradation. In addition, JXUST-23 exhibits good reusability for the degradation of the organic dye RhB, making it a potential candidate for environmental remediation.
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Affiliation(s)
- Rui-Jie Zhang
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Bi-Lian Chai
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Hui Xu
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Teng-Fei Zheng
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Zi-Hao Zhu
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Yan Peng
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Jing-Lin Chen
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - Sui-Jun Liu
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
| | - He-Rui Wen
- School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China
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270
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Song J, Zhang Q, Zhang Y, Guo H, Wang L. Study on persulfate activated by Ce-modified tea waste biochar to degrade tetracycline. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:49632-49643. [PMID: 36780077 DOI: 10.1007/s11356-023-25760-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 02/01/2023] [Indexed: 02/14/2023]
Abstract
In this study, the Ce-modified tea residue biochar (Ce-TBC) was successfully generated and applied to the biochar/persulfate system (Ce-TBC/PDS), the mechanism of the removal of tetracycline (TC) using Ce-TBC/PDS was elaborated. Under the optimal experimental conditions (Ce-TBC = 0.8 g L-1, PDS = 4 mM, TC = 10 mg L-1), the removal efficiency of TC was 91.28%, and after 5 cycles, the elimination rate of Ce-TBC/PDS still reached up to 80%. The mechanism of TC removal by Ce-TBC/PDS was analyzed by scanning electron microscopy (SEM), X-ray diffractometer (XRD), Fourier infrared transform spectrometer (FT-IR), and X-ray photoelectron spectrometer (XPS) characterization, and influence factor experiments. The results showed that the introduction of CeOx increased the oxygen vacancies on the TBC surface and promoted the interconversion between Ce3+ and Ce4+ for better activation of PDS and generation of active species. Free radical quenching experiments and paramagnetic resonance spectrometry (EPR) analysis showed that the non-radical pathway 1O2 played a dominant role in the Ce-TBC/PDS system. The present work provided an efficient means of PDS activator and recycling of tea waste.
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Affiliation(s)
- Jiabao Song
- School of Environmental & Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Qiuya Zhang
- School of Environmental & Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Yanan Zhang
- School of Environmental & Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Hongli Guo
- School of Environmental & Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Liping Wang
- School of Environmental & Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China.
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271
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Zhang H, Chen Y, Hua W, Gu W, Zhuang H, Li H, Jiang X, Mao Y, Liu Y, Jin D, Bu W. Heterostructures with Built-in Electric Fields for Long-lasting Chemodynamic Therapy. Angew Chem Int Ed Engl 2023; 62:e202300356. [PMID: 36780170 DOI: 10.1002/anie.202300356] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 02/14/2023]
Abstract
Sustained signal activation by hydroxyl radicals (⋅OH) has great significance, especially for tumor treatment, but remains challenging. Here, a built-in electric field (BIEF)-driven strategy was proposed for sustainable generation of ⋅OH, thereby achieving long-lasting chemodynamic therapy (LCDT). As a proof of concept, a novel Janus-like Fe@Fe3 O4 -Cu2 O heterogeneous catalyst was designed and synthesized, in which the BIEF induced the transfer of electrons in the Fe core to the surface, reducing ≡Cu2+ to ≡Cu+ , thus achieving continuous Fenton-like reactions and ⋅OH release for over 18 h, which is approximately 12 times longer than that of Fe3 O4 -Cu2 O and 72 times longer than that of Cu2 O nanoparticles. In vitro and in vivo antitumor results indicated that sustained ⋅OH levels led to persistent extracellular regulated protein kinases (ERK) signal activation and irreparable oxidative damage to tumor cells, which promoted irreversible tumor apoptosis. Importantly, this strategy provides ideas for developing long-acting nanoplatforms for various applications.
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Affiliation(s)
- Huilin Zhang
- Departments of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, 200040, P. R. China.,Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Yang Chen
- School of Life Sciences and Technology, Tongji University, Shanghai, 200092, P. R. China
| | - Wei Hua
- Departments of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, 200040, P. R. China
| | - Wenjun Gu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Hongjun Zhuang
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China.,Departments of Rehabilitation, Zhongshan Hospital, Fudan University, Shanghai, 200032, P. R. China
| | - Huiyan Li
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Xingwu Jiang
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Ying Mao
- Departments of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, 200040, P. R. China
| | - Yanyan Liu
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Dayong Jin
- Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, New South Wales, 2007, Australia
| | - Wenbo Bu
- Departments of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, 200040, P. R. China.,Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
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272
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Khumaeni A, Budi WS, Hedwig R, Kurniawan KH. Quantification of the Trace Metal Element Cr in Stainless Steel Using Picosecond Laser-Induced Breakdown Spectroscopy at Atmospheric Pressure. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2023. [DOI: 10.1007/s13369-023-07675-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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273
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Yuan H, Shang P, Yang J, Huang Q, Song L, Jiang XF. Anion-Directed Self-Assembly of Calix[4]arene-Based Silver(I) Coordination Polymers and Photocatalytic Degradation of Organic Pollutants. Inorg Chem 2023; 62:2652-2662. [PMID: 36719869 DOI: 10.1021/acs.inorgchem.2c03587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Coordination polymers (CPs) have recently emerged as promising candidates for heterogeneous photocatalysis due to their structural designability and tunable properties. Herein, we developed two novel Ag(I)-calix[4]arene coordination polymers with the formula {[Ag2(μ-NO3)L1]}n (CP 1) and {[AgL1]·PF6}n (CP 2) (L1 = 2-mercapto-5-methyl-1,3,4-thiadiazole resorcinol calix[4]arene). Crystallography revealed that anion coordination and self-inclusion behavior induced the cavitand and silver ions to self-assemble into well-defined CPs 1 and 2 with different topological coordination frameworks, respectively. Furthermore, CPs 1 and 2 display high photocatalytic activity for the photodegradation of rhodamine B (RhB) and methyl orange (MO) in an aqueous solution under mild conditions (WLED and UV irradiation). The comparison results demonstrate that CP 1 exhibited better photocatalytic performance than CP 2, which correlated well with the differences in their molecular structure and HOMO-LUMO energy gaps. The photocatalysis products and possible intermediates were successfully monitored and determined using mass spectrum, gas chromatography, and electron paramagnetic resonance measurements. The rational photocatalysis mechanism was further investigated and proposed.
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Affiliation(s)
- Hui Yuan
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China
| | - Ping Shang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China
| | - Jie Yang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China
| | - Qing Huang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China
| | - Ling Song
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China
| | - Xuan-Feng Jiang
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Science, School of Materials Science and Engineering, Hubei University, Wuhan, Hubei 430062, P.R. China.,Hubei Key Laboratory of Processing and Application of Catalytic Materials, Huanggang Normal University, Huanggang, Hubei 438000, P.R. China
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274
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Complete, Theoretical Rovibronic Spectral Characterization of the Carbon Monoxide, Water, and Formaldehyde Cations. Molecules 2023; 28:molecules28041782. [PMID: 36838769 PMCID: PMC9964158 DOI: 10.3390/molecules28041782] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
New high-level ab initio quartic force field (QFF) methods are explored which provide spectroscopic data for the electronically excited states of the carbon monoxide, water, and formaldehyde cations, sentinel species for expanded, recent cometary spectral analysis. QFFs based on equation-of-motion ionization potential (EOM-IP) with a complete basis set extrapolation and core correlation corrections provide assignment for the fundamental vibrational frequencies of the A˜2B1 and B˜2A1 states of the formaldehyde cation; only three of these frequencies have experimental assignment available. Rotational constants corresponding to these vibrational excitations are also provided for the first time for all electronically excited states of both of these molecules. EOM-IP-CCSDT/CcC computations support tentative re-assignment of the ν1 and ν3 frequencies of the B˜2B2 state of the water cation to approximately 2409.3 cm-1 and 1785.7 cm-1, respectively, due to significant disagreement between experimental assignment and all levels of theory computed herein, as well as work by previous authors. The EOM-IP-CCSDT/CcC QFF achieves agreement to within 12 cm-1 for the fundamental vibrational frequencies of the electronic ground state of the water cation compared to experimental values and to the high-level theoretical benchmarks for variationally-accessible states. Less costly EOM-IP based approaches are also explored using approximate triples coupled cluster methods, as well as electronically excited state QFFs based on EOM-CC3 and the previous (T)+EOM approach. The novel data, including vibrationally corrected rotational constants for all states studied herein, provided by these computations should be useful in clarifying comet evolution or other remote sensing applications in addition to fundamental spectroscopy.
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275
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Borisover M. Time-independent desorption hysteresis in liquid phase sorption experiments: the concept and the models based on gate-sorption site coupling. ADSORPTION 2023. [DOI: 10.1007/s10450-023-00380-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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276
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Chemical Composition, Antimicrobial and Antioxidant Bioautography Activity of Essential Oil from Leaves of Amazon Plant Clinopodium brownei (Sw.). Molecules 2023; 28:molecules28041741. [PMID: 36838728 PMCID: PMC9962765 DOI: 10.3390/molecules28041741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/25/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
The Amazonian region of Ecuador has an extremely rich vegetal biodiversity, and its inhabitants have proven to have a millennial ancestral knowledge of the therapeutic and medicinal use of these resources. This work aimed to evaluate the chemical composition and biological activity of the essential oil obtained from the medicinal plant Clinopodium brownei (Sw.) Kuntze, which is widely spread in tropical and subtropical America. This species is traditionally used for treating respiratory and digestive diseases and is also known for its analgesic properties. Most of the molecules detected on a non-polar column were ethyl cinnamate 21.4%, pulegone 20.76%, methyl cinnamate 16.68%, caryophyllene 8.17%, β-selinene 7.92% and menthone 7.51%, while those detected on a polar column were: pulegone 29.90%, ethyl cinnamate 18.75%, methyl cinnamate 13.82%, caryophyllene 10.0% and menthone 8.04%. The antioxidant activity by the assays, DPPH (2.2-diphenyl-1-picrylhydrazyl) and ABTS (2.2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)), shows the following values of 50% inhibition of oxidation, IC50 DPPH 1.77 mg/mL, IC50 ABTS 0.06 mg/mL, which, compared to the essential oil of Thymus vulgaris (natural positive control), turn out to be less active. Bioautography indicates that the molecules responsible for the antioxidant activity are derived from cinnamic acid: ethyl cinnamate and methyl cinnamate, and caryophyllene. The antimicrobial activity on the nine microorganisms evaluated shows bacterial growth inhibitory concentrations ranging from 13.6 mg/mL for Staphylococcus epidermidis ATCC 14990 to 3.1 mg/mL for Candida albicans ATCC 10231; the results are lower than those of the positive control. Bioautography assigns antimicrobial activity to caryophyllene. The results indicate a very interesting activity of the essential oil and several of its molecules, validating the traditional use and the importance of this medicinal plant from Ecuador.
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277
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Kim DH, Kwon HG, Choi HK. Dewetting-Induced Hierarchical Self-Assembly of Block Copolymers Templated by Colloidal Crystals. Polymers (Basel) 2023; 15:polym15040897. [PMID: 36850181 PMCID: PMC9961777 DOI: 10.3390/polym15040897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Recent advances in high-performance flexible electronic devices have increased the demand for more diverse and complex nanofabrication methods; high-resolution, high-efficiency, and low-cost patterning strategies for next-generation devices are therefore required. In this study, we demonstrate the formation of dewetting-induced hierarchical patterns using two self-assembled materials: block copolymers (BCPs) and colloidal crystals. The combination of the two self-assembly methods successfully generates multiscale hierarchical patterns because the length scales of the periodic colloidal crystal structures are suitable for templating the BCP patterns. Various concentric ring patterns were observed on the templated BCP films, and a free energy model of the polymer chain was applied to explain the formation of these patterns relative to the template width. Frequently occurring spiral-defective features were also examined and found to be promoted by Y-junction defects.
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278
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Shao Y, Hou B, Li W, Yan X, Wang X, Xu Y, Dong Q, Li W, He J, Zhang WB. Three-Component Bolaform Giant Surfactants Forming Lamellar Nanopatterns with Sub-5 nm Feature Sizes. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- Yu Shao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Bo Hou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Weiyi Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Xiaojin Yan
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Xiaoge Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Yuchun Xu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Qingshu Dong
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Weihua Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, P. R. China
| | - Jinlin He
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China
| | - Wen-Bin Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry & Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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279
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Tang H, Lü X, Meng X, Wang H, Bai G, Bao W. Biomimetic Liquid Metal-Elastomer Composited Foam with Adjustable Thermal Conductivity for Heat Control. Molecules 2023; 28:1688. [PMID: 36838676 PMCID: PMC9962720 DOI: 10.3390/molecules28041688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/20/2023] [Accepted: 02/02/2023] [Indexed: 02/12/2023] Open
Abstract
The application of traditional materials with constant thermal conductivity in time-varying thermal environments poses great challenges due to their inability of adjusting thermal conductivity according to different requirements, for which reason materials with adjustable thermal conductivity have attracted much attention. However, certain limitations induced by those materials' low softness or harsh adjustment conditions restrict them from being applied in heat dissipation and heat transfer scenarios. In this study, we report a biomimetic liquid metal-elastomer composited foam with adjustable thermal conductivity (B-LM-ECF). Inspired by the rationale of homeothermic animals regulating the thermal conductivity of their subcutaneous tissue, the prepared material adjusts its thermal conductivity via adjusting the volume proportion of liquid metal within it. The thermal conductivity of B-LM-ECF can be adjusted within the range of 0.11-8.4 W·m-1K-1. The adjustment factor η of B-LM-ECF is 76, which is defined as the ratio of the highest to the lowest thermal conductivity of the material. The material enabling reversible switching for itself from thermal insulation to heat dissipation. The prepared material exhibits 45 KPa of Young's modulus with the maximum fracture tensile rate of 600%, facilitating better covering for thermal management objects. We selected a power lithium battery and a smartphone as specific thermal management objects to demonstrate its practical application in thermal management experiment.
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Affiliation(s)
- Hongyao Tang
- School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
| | - Xiaozhou Lü
- School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
| | - Xiangyu Meng
- School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
| | - Hai Wang
- School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
| | - Guanghui Bai
- Science and Technology on Space Physics Laboratory, Beijing 100076, China
| | - Weimin Bao
- School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
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280
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Verevkin SP, Samarov AA, Zherikova KV. Noncovalent Interactions in Crowded Benzene Systems: How Much Strain Is Too Much? Attractions Overcome Repulsions! Synlett 2023. [DOI: 10.1055/s-0042-1751415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
AbstractIn molecular design, large alkyl groups are used to introduce bulk and steric crowding of the catalytic center to improve catalytic efficiency and selectivity. The bulky groups are highly polarizable, increasing their ability to participate in stabilizing noncovalent interactions. The rationalization of noncovalent interaction trends is of both fundamental and practical interest as it provides new design concepts for catalysis and synthesis. Highly congested molecules always present challenges to chemists. Crowded benzene systems are an important class of compounds with well-established thermodynamic properties. The latter were used in this work to develop tools to quantify the degree of stabilization or destabilization in benzene systems crowded with bulky isopropyl and tert-butyl substituents. The basic idea was to quantify the delicate balance between repulsive and attractive interactions inherent in crowded benzene systems. The ensemble of experimental thermodynamic data and DFT-D3 calculations enabled the development of quantitative scales of the dispersion contributions and their understanding at the molecular level.
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Affiliation(s)
- Sergey P. Verevkin
- Faculty of Interdisciplinary Research, Competence Centre CALOR, University of Rostock
- Department of Physical Chemistry, Kazan Federal University
| | | | - Kseniya V. Zherikova
- Nikolaev Institute of Inorganic Chemistry of Siberian Branch of Russian Academy of Sciences
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281
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Wlodarczyk MT, Dragulska SA, Chen Y, Poursharifi M, Acosta Santiago M, Martignetti JA, Mieszawska AJ. Pt(II)-PLGA Hybrid in a pH-Responsive Nanoparticle System Targeting Ovarian Cancer. Pharmaceutics 2023; 15:pharmaceutics15020607. [PMID: 36839929 PMCID: PMC9961376 DOI: 10.3390/pharmaceutics15020607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Platinum-based agents are the main treatment option in ovarian cancer (OC). Herein, we report a poly(lactic-co-glycolic acid) (PLGA) nanoparticle (NP) encapsulating platinum (II), which is targeted to a cell-spanning protein overexpressed in above 90% of late-stage OC, mucin 1 (MUC1). The NP is coated with phospholipid-DNA aptamers against MUC1 and a pH-sensitive PEG derivative containing an acid-labile hydrazone linkage. The pH-sensitive PEG serves as an off-on switch that provides shielding effects at the physiological pH and is shed at lower pH, thus exposing the MUC1 ligands. The pH-MUC1-Pt NPs are stable in the serum and display pH-dependent PEG cleavage and drug release. Moreover, the NPs effectively internalize in OC cells with higher accumulation at lower pH. The Pt (II) loading into the NP was accomplished via PLGA-Pt (II) coordination chemistry and was found to be 1.62 wt.%. In vitro screening using a panel of OC cell lines revealed that pH-MUC1-Pt NP has a greater effect in reducing cellular viability than carboplatin, a clinically relevant drug analogue. Biodistribution studies have demonstrated NP accumulation at tumor sites with effective Pt (II) delivery. Together, these results demonstrate a potential for pH-MUC1-Pt NP for the enhanced Pt (II) therapy of OC and other solid tumors currently treated with platinum agents.
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Affiliation(s)
- Marek T. Wlodarczyk
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
| | - Sylwia A. Dragulska
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
| | - Ying Chen
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA
| | - Mina Poursharifi
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
| | - Maxier Acosta Santiago
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
| | - John A. Martignetti
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA
- Women’s Health Research Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY 10029, USA
- Rudy Ruggles Research Institute, Western Connecticut Health Network, 131 West St., Danbury, CT 06810, USA
| | - Aneta J. Mieszawska
- Department of Chemistry, Brooklyn College, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
- Correspondence:
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282
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A Theoretical Study of Scattering of e± by Tl Atom. ATOMS 2023. [DOI: 10.3390/atoms11020037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
This article incorporates details of our calculations of the observable quantities for the scattering of electrons and positrons from a post transition metal Thallium (Tl), in the energy range of 1 eV ≤ Ei ≤ 1 MeV, using the relativistic Dirac partial wave (phase-shift) analysis employing a complex optical-potential. Absolute differential, integrated elastic and inelastic, transport, total ionization, and total cross sections and a thorough study of the critical minima in the elastic differential cross sections along with the associated angular positions of the maximum polarization points in the Sherman function are provided to study the collision dynamics. The optical potential model incorporates the interactions of the incident electron and/or positron with both the nucleus and the bound electrons of the target atom. In-depth analyses of the spin asymmetry, which are sensitive to phases related interference effect, brought on by the various ingredients of the lepton-atom interaction, are also presented. The performance of the current approach to explain the observations, with the exception of the extremely low energy domain, is shown by a comparison of the previous experimental and theoretical results on this target atom.
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283
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Banyon C, Tranter RS. High-Temperature Dissociation of Neopentanol: Shock Tube/Photoionization Mass Spectrometry Studies. J Phys Chem A 2023; 127:1293-1301. [PMID: 36716350 DOI: 10.1021/acs.jpca.2c07358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The pyrolysis mechanism of 2,2-dimethylpropan-1-ol (neopentanol) has been investigated at high temperatures (1128-1401K) and high pressures (5 and 15 bar). The experiments were performed in a miniature shock tube coupled to a time-of-flight mass spectrometer. Cations were generated by tunable vacuum ultraviolet photoionization resulting in multidimensional data sets containing mass and photoionization spectra and the time histories of species. At the elevated temperatures and pressures of this work, neopentanol was determined to dissociate primarily by the scission of a C-C bond yielding tert-butyl and hydroxymethyl radicals. These promptly form isobutene and formaldehyde by H-atom elimination. In the structurally similar molecule neopentane, roaming radical reactions have previously been found to be important under conditions close to the present work (1260-1459 K, 1.1 bar). There are two possible roaming radical reactions for neopentanol. However, no experimental evidence for these reactions was found at the elevated pressures in this study, and the dissociation of neopentanol is dominated by bond scission yielding radical products.
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Affiliation(s)
- Colin Banyon
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois60439, United States
| | - Robert S Tranter
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois60439, United States
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284
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Zhao H, Chen W, Wu D, Liu X, Hu W, Zhang X. Coupling the effect of Co and Mo on peroxymonosulfate activation for the removal of organic pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:48389-48400. [PMID: 36759407 DOI: 10.1007/s11356-023-25755-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
Although heterogeneous cobalt-based catalysts have been widely studied and used in SO4•- based advanced oxidation processes, the efficiencies were still not high enough due to the limiting step of Co(III)/Co(II) cycle in the system. In this study, a bimetallic oxide composed of Co and Mo was designed and used for enhancing the performance of peroxymonosulfate activation on organic pollutants removal. The CoMoO4 nanorods exhibited superior catalytic activity for methylene blue (MB) degradation than Co3O4, MoO3, and their mechanical mixture, which was attributed to the synergetic effect between Co and Mo. CoMoO4 nanorods were able to efficiently degrade MB under a wide pH range of 3-11 and could maintain high efficiency in 5 cycles with less leakage of metal ions. Moreover, CoMoO4 nanorods displayed broad spectrum applicability to the different water matrix and a variety of pollutants such as phenol and Congo red. The Co(II) was proved to be the main active site of the catalyst, while Mo played an important role in promoting the Co(III)/Co(II) cycle. Surface free radicals are the main active species in the degradation process. This work provides new insights into the design of cobalt-based bimetallic catalyst and the improvement on PMS activation.
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Affiliation(s)
- Huanxin Zhao
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.
| | - Wenkai Chen
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Dan Wu
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Xinyue Liu
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Wanjie Hu
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Xuejun Zhang
- College of Environmental and Safety Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China
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285
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Wide-pH-range adaptable ammonia electrosynthesis from nitrate on Cu-Pd interfaces. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1411-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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286
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Efficient degradation of trichloroethene with the existence of surfactants by peroxymonosulfate activated by nano-zero-valent iron: performance and mechanism investigation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:48351-48362. [PMID: 36757597 DOI: 10.1007/s11356-023-25725-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 01/31/2023] [Indexed: 02/10/2023]
Abstract
In this study, the degradation of trichloroethylene (TCE) with the existence of tween-80 (TW-80) or sodium dodecyl sulfate (SDS) using peroxymonosulfate (PMS) activated by nano-zero-valent iron (nZVI) was investigated. Over 87.6% TCE (with 1.3 g L-1 TW-80 presence) was degraded by 0.9 mM PMS and 0.12 g L-1 nZVI, while 89.7% TCE (with 2.3 g L-1 SDS presence) was degraded by 1.2 mM PMS and 0.20 g L-1 nZVI, in which more than 71.9% TCE with TW-80 existence and 87.5% TCE with SDS existence were dechlorinated. Besides, the effects of some factors (i.e., PMS and nZVI dosages, initial solution pH, and inorganic anions) on TCE removal were evaluated. The degradation of TCE was restrained continuously with increasing surfactant concentration, and TW-80 was more easily decomposed than SDS in PMS/nZVI system. Furthermore, sulfate radical (SO4-•) and hydroxyl radical (HO•) were demonstrated the main reactive oxygen species (ROS) contributing to TCE degradation and SO4-• played a dominant role through EPR tests and ROS scavenging experiments. Finally, the results of TCE degradation in actual groundwater confirmed that PMS/nZVI process has great advantages and potential in remediation of actual TCE-contaminated groundwater with TW-80 or SDS existence.
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287
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Galashev AY, Rakhmanova OR, Abramova KA, Katin KP, Maslov MM, Tkacheva OY, Rudenko AV, Kataev AA, Zaikov YP. Molecular Dynamics and Experimental Study of the Effect of CeF 3 and NdF 3 Additives on the Physical Properties of FLiNaK. J Phys Chem B 2023; 127:1197-1208. [PMID: 36696698 DOI: 10.1021/acs.jpcb.2c06915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The paper presents the results, which are consistent within 2%, obtained both in the simulation of molecular dynamics and in the experiment on the study of the kinetic properties of molten FLiNaK with addition of lanthanide fluorides. The parameters of the Born-Huggins-Meier potential for the interaction of CeF3 or NdF3 with FLiNaK components are first calculated using the ab initio approach. The enthalpy of the system with dissolved CeF3 or NdF3 calculated in the model increases by ∼4.4% over the entire temperature range studied (800 ≤ T ≤ 1020 K). The self-diffusion coefficients of the molten salt components are calculated from the Einstein relation and also estimated from the shear viscosity data. The temperature dependences of the shear viscosity of molten FLiNaK as well as FLiNaK with additions of 15 mol % CeF3 or NdF3 are determined experimentally and by calculation. In addition, the dependence of shear viscosity on the concentration of CeF3 and NdF3 in FLiNaK is measured and calculated. The linear growth of the shear viscosity with the CeF3 and NdF3 concentrations is obtained. Experimental dependence is in good agreement with the simulated results in the case of NdF3, and there is the discrepancy while CeF3 addition. An analytical approximation of the temperature and concentration dependences for the viscosity of molten FliNaK and for the calculated self-diffusion coefficients of constituent elements is proposed. Linear approximation of temperature dependence of the self-diffusion coefficients of similar components in the corresponding extended systems is presented.
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Affiliation(s)
- A Y Galashev
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - O R Rakhmanova
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - K A Abramova
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - K P Katin
- National Research Nuclear University MIPhI, Moscow115409Russia
| | - M M Maslov
- National Research Nuclear University MIPhI, Moscow115409Russia
| | - O Y Tkacheva
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - A V Rudenko
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - A A Kataev
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
| | - Y P Zaikov
- Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences, Akademicheskaya Street, 20, Yekaterinburg620990, Russia
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288
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Bang S, Snoeckx R, Cha MS. Kinetic Study for Plasma Assisted Cracking of NH 3: Approaches and Challenges. J Phys Chem A 2023; 127:1271-1282. [PMID: 36656156 DOI: 10.1021/acs.jpca.2c06919] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Ammonia is considered as one of the promising hydrogen carriers toward a sustainable world. Plasma assisted decomposition of NH3 could provide cost- and energy-effective, low-temperature, on-demand (partial) cracking of NH3 into H2. Here, we presented a temperature-dependent plasma-chemical kinetic study to investigate the role of both electron-induced reactions and thermally induced reactions on the decomposition of NH3. We employed a plasma-chemical kinetic model (KAUSTKin), developed a plasma-chemical reaction mechanism for the numerical analysis, and introduced a temperature-controlled dielectric barrier discharge reactor for the experimental investigation using 1 mol % NH3 diluted in N2. As a result, we observed the plasma significantly lowered the cracking temperature and found that the plasma-chemical mechanism should be further improved to better predict the experiment. The commonly used rates for the key NH3 pyrolysis reaction (NH3 + M ↔ NH2 + H + M) significantly overpredicted the recombination rate at temperatures below 600 K. Furthermore, the other identified shortcomings in the available data are (i) thermal hydrazine chemistry, (ii) electron-scattering cross-section data of NxHy, (iii) electron-impact dissociation of N2, and (iv) dissociative quenching of excited states of N2. We believe that the present study will spark fundamental interest to address these shortcomings and contribute to technical advancements in plasma assisted NH3 cracking technology.
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Affiliation(s)
- Seunghwan Bang
- CCRC, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal23955, Saudi Arabia
| | - Ramses Snoeckx
- CCRC, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal23955, Saudi Arabia
| | - Min Suk Cha
- CCRC, Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal23955, Saudi Arabia
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289
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Mittelmann S, Touchet K, Mao X, Park M, Brezinsek S, Pretzler G, Zorba V. Hydrogen isotope analysis in W-tiles using fs-LIBS. Sci Rep 2023; 13:2285. [PMID: 36759588 PMCID: PMC9911398 DOI: 10.1038/s41598-023-29138-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
Laser-Induced Breakdown Spectroscopy (LIBS) is a promising technology for in-situ analysis of Plasma-Facing Components in magnetic confinement fusion facilities. It is of major interest to monitor the hydrogen isotope retention i.e. tritium and deuterium over many operation hours to guarantee safety and availability of the future reactor. In our studies we use ultraviolet femtosecond laser pulses to analyze tungsten (W) tiles that were exposed to a deuterium plasma in the linear plasma device PSI-2, which mimics conditions at the first wall. A high-resolution spectrometer is used to detect the Balmer-[Formula: see text] transition of the surface from implanted hydrogen isotopes (H and D). We use Calibration Free CF-LIBS to quantify the amount of deuterium stored in W. This proof-of-principle study shows the applicability of femtosecond lasers for the detection of low deuterium concentration as present in first wall material of prevailing fusion experiments.
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Affiliation(s)
- Steffen Mittelmann
- Institute of Laser and Plasma Physics, Heinrich-Heine University Düsseldorf, 40225, Düsseldorf, Germany.
| | - Kévin Touchet
- grid.184769.50000 0001 2231 4551Laser Technologies Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Xianglei Mao
- grid.184769.50000 0001 2231 4551Laser Technologies Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Minok Park
- grid.184769.50000 0001 2231 4551Laser Technologies Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Sebastijan Brezinsek
- grid.8385.60000 0001 2297 375XForschungszentrum Jülich GmbH IEK-4 Plasmaphysik, 52425 Jülich, Germany
| | - Georg Pretzler
- grid.411327.20000 0001 2176 9917Institute of Laser and Plasma Physics, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Vassilia Zorba
- grid.184769.50000 0001 2231 4551Laser Technologies Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA ,grid.47840.3f0000 0001 2181 7878Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA 94720-1740 USA
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290
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Metal micro/nanostructure enhanced laser-induced breakdown spectroscopy. Anal Chim Acta 2023; 1241:340802. [PMID: 36657874 DOI: 10.1016/j.aca.2023.340802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/16/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023]
Abstract
This study used a femtosecond laser to ablate a Cu sample, forming a micro/nanostructural layer on the surface. And the effect of this structural layer on nanosecond laser-induced breakdown spectroscopy (LIBS) was discussed. Firstly, the effect of the micro/nanostructural layer on the intensity of laser-induced Cu plasma spectra was investigated. The micro/nanostructure could significantly enhance the spectral intensity of the Cu plasma by 82.5 times at 13.3 mJ laser energy. Secondly, the Cu plasma temperature and electron density were calculated. The micro/nanostructures could significantly increase Cu plasma temperature and electron density. Finally, the effect of micro/nanostructure surface on the spectral intensities of Pb and Cr elements in water was investigated for LIBS analysis. It was found that the detection limit of Pb and Cr trace metal elements in water was 1.85 ng/mL and 0.51 ng/mL at a lower laser energy (13.3 mJ), which was significantly better than other LIBS methods reported so far. The results show that the micro/nanostructure enhanced LIBS is a more sensitive method for detecting trace metal elements in the water.
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291
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Gai L, Zhang R, Shi X, Ni Z, Wang S, Zhang JL, Lu H, Guo Z. BOINPYs: facile synthesis and photothermal properties triggered by photoinduced nonadiabatic decay. Chem Sci 2023; 14:1434-1442. [PMID: 36794191 PMCID: PMC9906650 DOI: 10.1039/d2sc06435a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Photothermal agents (PTAs) represent a core component of photothermal therapy (PTT). However, the current photothermal dyes are almost derived from well-known chromophores such as porphyrins, cyanine, and BODIPYs, and the design of new chromophores as versatile building blocks for PTA is considerably challenging because of the complexity of the modulation of excited-states. Herein, we adopted the concept of photoinduced nonadiabatic decay (PIND) to develop a photothermal boron-containing indoline-3-one-pyridyl chromophore (viz. BOINPY) with a facile one-pot synthesis and high yields. BOINPY derivatives exhibited specific features that fully address the concerns related to the design of PTA. The behavior and mechanism of BOINPYs for generating heat through the conical intersection pathway, which is called PIND, have been well understood through theoretical calculations. After encapsulation into the F127 copolymer, BOINPY@F127 nanoparticles displayed efficient photothermal conversion and performed well in the treatment of solid tumors upon light irradiation with good biocompatibility. This study provides useful theoretical guidance and concrete photothermal chromophores, which offer a versatile strategy embedding tunable properties for the development of diverse high-performance PTA.
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Affiliation(s)
- Lizhi Gai
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou 311121 P. R. China
| | - Ruijing Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China .,Spin-X Institute, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou 510641 China
| | - Xiuguang Shi
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou 311121 P. R. China
| | - Zhigang Ni
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou 311121 P. R. China
| | - Sisi Wang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou 311121 P. R. China .,State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China .,Chemistry and Chemical Engineering, Guangdong Laboratory Shantou 515031 China
| | - Hua Lu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University No. 2318, Yuhangtang Road Hangzhou 311121 P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing UniversityNanjing 210023P. R. China
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292
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Modeling of Liquid Hydrogen Tank Cooled with Para-Orthohydrogen Conversion. HYDROGEN 2023. [DOI: 10.3390/hydrogen4010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
With the accelerating development of liquid-hydrogen storage facilities, the problem of boil-off hydrogen losses becomes very important. A promising method to reduce these losses is to utilize the endothermic para-orthohydrogen conversion of vented hydrogen, which can effectively decrease heat loads on a hydrogen tank. To model such a process, a hybrid computational model has been developed, based on the application of computational fluid dynamics for an ullage space, where knowledge of thermal stratification is important, and reduced-order models for other system elements. The simulation results for a spheroidal tank in selected conditions indicated a 10–25% reduction of boil-off losses due to cooling produced by vented hydrogen undergoing para-ortho-conversion.
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293
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Kamran M, Qayoum A. Experimental investigation of natural convection of Fe 3O 4-water nanofluid in a cubic cavity. J DISPER SCI TECHNOL 2023. [DOI: 10.1080/01932691.2023.2173607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Mohammad Kamran
- Mechanical Engineering Department, National Institute of Technology Srinagar, Srinagar, J&K, India
| | - Adnan Qayoum
- Mechanical Engineering Department, National Institute of Technology Srinagar, Srinagar, J&K, India
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294
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Kayang KW, Volkov AN, Zhilyaev PA, Sharipov F. The ab initio potential energy curves of atom pairs and transport properties of high-temperature vapors of Cu and Si and their mixtures with He, Ar, and Xe gases. Phys Chem Chem Phys 2023; 25:4872-4898. [PMID: 36692492 DOI: 10.1039/d2cp04981c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The potential energy curves (PECs) for the homonuclear He-He, Ar-Ar, Cu-Cu, and Si-Si dimers, as well as heteronuclear Cu-He, Cu-Ar, Cu-Xe, Si-He, Si-Ar, and Si-Xe dimers, are obtained in quantum Monte Carlo (QMC) calculations. It is shown that the QMC method provides the PECs with an accuracy comparable with that of the state-of-the-art coupled cluster singles and doubles with perturbative triples corrections [CCSD(T)] calculations. The QMC data are approximated by the Morse long range (MLR) and (12-6) Lennard-Jones (LJ) potentials. The MLR and LJ potentials are used to calculate the deflection angles in binary collisions of corresponding atom pairs and transport coefficients of Cu and Si vapors and their mixtures with He, Ar, and Xe gases in the range of temperature from 100 K to 10 000 K. It is shown that the use of the LJ potentials introduces significant errors in the transport coefficients of high-temperature vapors and gas mixtures. The mixtures with heavy noble gases demonstrate anomalous behavior when the viscosity and thermal conductivity can be larger than that of the corresponding pure substances. In the mixtures with helium, the thermal diffusion factor is found to be unusually large. The calculated viscosity and diffusivity are used to determine parameters of the variable hard sphere and variable soft sphere molecular models as well as parameters of the power-law approximations for the transport coefficients. The results obtained in the present work include all information required for kinetic or continuum simulations of dilute Cu and Si vapors and their mixtures with He, Ar, and Xe gases.
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Affiliation(s)
- Kevin W Kayang
- Department of Mechanical Engineering, University of Alabama, 7th Avenue, Tuscaloosa, AL 35487, USA.
| | - Alexey N Volkov
- Department of Mechanical Engineering, University of Alabama, 7th Avenue, Tuscaloosa, AL 35487, USA.
| | - Petr A Zhilyaev
- Skolkovo Institute of Science and Technology, 121205, Bolshoy Boulevard 30, bld. 1, Moscow, Russia
| | - Felix Sharipov
- Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, Curitiba 81531-980, Brazil
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295
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Das P, Thekkepat K, Lee YS, Lee SC, Bhattacharjee S. Computational design of novel MAX phase alloys as potential hydrogen storage media combining first principles and cluster expansion methods. Phys Chem Chem Phys 2023; 25:5203-5210. [PMID: 36723101 DOI: 10.1039/d2cp05587b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Finding a suitable material for hydrogen storage under ambient atmospheric conditions is challenging for material scientists and chemists. In this work, using a first principles based cluster expansion approach, the hydrogen storage capacity of the Ti2AC (A = Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, and Zn) MAX phase and its alloys was studied. We found that hydrogen is energetically stable in Ti-A layers in which the tetrahedral site consisting of one A atom and three Ti atoms is energetically more favorable for hydrogen adsorption than other sites in the Ti-A layer. Ti2CuC has the highest hydrogen adsorption energy than other Ti2AC phases. We find that the 83.33% Cu doped Ti2AlxCu1-xC alloy structure is both energetically and dynamically stable and can store 3.66 wt% hydrogen under ambient atmospheric conditions, which is higher than that stored by both Ti2AlC and Ti2CuC phases. These findings indicate that the hydrogen capacity of the MAX phase can be significantly improved by doping an appropriate atom species.
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Affiliation(s)
- Pritam Das
- Indo-Korea Science and Technology Center (IKST), Jakkur, Bengaluru 560065, India.
| | - Krishnamohan Thekkepat
- Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
| | - Young-Su Lee
- Energy Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Seoul, Republic of Korea
| | - Seung-Cheol Lee
- Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
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296
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Wang YS, Li H, Bai S, Wang YY, Han YF. N-Heterocyclic carbene-stabilized platinum nanoparticles within a porphyrinic nanocage for selective photooxidation. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1504-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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297
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Sodeifian G, Hsieh CM, Tabibzadeh A, Wang HC, Arbab Nooshabadi M. Solubility of palbociclib in supercritical carbon dioxide from experimental measurement and Peng-Robinson equation of state. Sci Rep 2023; 13:2172. [PMID: 36750582 PMCID: PMC9905554 DOI: 10.1038/s41598-023-29228-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Palbociclib is a poorly water-soluble medicine which acts against metastatic breast cancer cells. Among various techniques to improve the solubility of this medicine, applying supercritical technologies to produce micro- and nano-sized particles is a possible option. For this purpose, extraction of solubility data is required. In this research, the solubility of palbociclib in supercritical carbon dioxide (ScCO2) at different equilibrium conditions was measured at temperatures between 308 and 338 K and pressures within 12-27 MPa, for the first time. The minimum and maximum solubility data were found to be 8.1 × 10-7 (at 338 K and 12 MPa) and 2.03 × 10-5 (at 338 K and 27 MPa), respectively. Thereafter, two sets of models, including ten semi-empirical equations and three Peng-Robinson (PR) based integrated models were used to correlate the experimental solubility data. Bian's model and PR equation of state using van der Waals mixing rules (PR + vdW) showed better accuracy among the examined semi-empirical and integrated models, respectively. Furthermore, the self-consistency of the obtained data was confirmed using two distinct semi-empirical models. At last, the total and vaporization enthalpies of palbociclib solubility in ScCO2 were calculated from correlation results of semi-empirical equations and estimated to be 40.41 and 52.67 kJ/mol, respectively.
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Affiliation(s)
- Gholamhossein Sodeifian
- Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, 87317-53153, Iran. .,Laboratory of Supercritical Fluids and Nanotechnology, University of Kashan, Kashan, 87317-53153, Iran. .,Modeling and Simulation Centre, Faculty of Engineering, University of Kashan, Kashan, 87317-53153, Iran.
| | - Chieh-Ming Hsieh
- grid.37589.300000 0004 0532 3167Department of Chemical and Materials Engineering, National Central University, Taoyuan, 320317 Taiwan
| | - Amirmuhammad Tabibzadeh
- grid.412057.50000 0004 0612 7328Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, 87317-53153 Iran ,grid.412057.50000 0004 0612 7328Laboratory of Supercritical Fluids and Nanotechnology, University of Kashan, Kashan, 87317-53153 Iran ,grid.412057.50000 0004 0612 7328Modeling and Simulation Centre, Faculty of Engineering, University of Kashan, Kashan, 87317-53153 Iran
| | - Hsu-Chen Wang
- grid.37589.300000 0004 0532 3167Department of Chemical and Materials Engineering, National Central University, Taoyuan, 320317 Taiwan
| | - Maryam Arbab Nooshabadi
- grid.460957.90000 0004 0494 0702Bolvar Ghotbe Ravandi, Islamic Azad University of Kashan, Ostaadan Street, Kashan, 87159-98151 Iran
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298
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Chen H, Manvell AS, Kubus M, Dunstan MA, Lorusso G, Gracia D, Jørgensen MSB, Kegnæs S, Wilhelm F, Rogalev A, Evangelisti M, Pedersen KS. Towards frustration in Eu(II) Archimedean tessellations. Chem Commun (Camb) 2023; 59:1609-1612. [PMID: 36692932 DOI: 10.1039/d2cc06224k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Self-assembly of trans-{EuI2} nodes and ditopic ligands leads to isoreticular 2D frameworks featuring a rare, non-kagome Archimedean tessellation. The topology and intra-layer Eu(II)-Eu(II) antiferromagnetic interactions provide the prerequisites for geometrical spin frustration, which, due to the spin state degeneracy, is key for novel phenomena such as enhanced magnetic refrigeration.
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Affiliation(s)
- Hua Chen
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Anna S Manvell
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Mariusz Kubus
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Maja A Dunstan
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Giulia Lorusso
- CNR-Institute for Microelectronics and Microsystems, Bologna Unit, Bologna 40129, Italy
| | - David Gracia
- Instituto de Nanociencia y Materiales de Aragón, Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Mike S B Jørgensen
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Søren Kegnæs
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
| | - Fabrice Wilhelm
- European Synchrotron Radiation Facility, BP 220, Grenoble Cedex 9 38043, France
| | - Andrei Rogalev
- European Synchrotron Radiation Facility, BP 220, Grenoble Cedex 9 38043, France
| | - Marco Evangelisti
- Instituto de Nanociencia y Materiales de Aragón, Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Kasper S Pedersen
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
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299
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Espinosa-Garcia J, Rangel C. Analytical potential energy surface and dynamics for the OH + CH 3OH reaction. J Chem Phys 2023; 158:054302. [PMID: 36754788 DOI: 10.1063/5.0137372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Using as functional form a combination of valence bond and mechanic molecular terms a new full-dimensional potential energy surface was developed for the title reaction, named PES-2022, which was fitted to high-level ab initio calculations at the coupled-cluster singles, doubles, and perturbative triples-F12 explicitly correlated level on a representative number of points describing the reactive system. This surface simultaneously describes the two reaction channels, hydrogen abstraction from the methyl group [(R1) path] and from the alcohol group [(R2) path] of methanol to form water. PES-2022 is a smooth and continuous surface, which reasonably describes the topology of this reactive system from reactants to products, including the intermediate complexes present in the system. Based on PES-2022 an exhaustive dynamics study was performed using quasi-classical trajectory calculations under two different initial conditions: at a fixed room temperature, for direct comparison with the experimental evidence and at different collision energies, to analyze possible mechanisms of reaction. In the first case, the available energy was mostly deposited as water vibrational energy, with the vibrational population inverted in the stretching modes and not inverted in the bending modes, reproducing the experimental evidence. In the second case, the analysis of different dynamics magnitudes (excitation functions, product energy partitioning, and product scattering distributions), allows us to suggest different mechanisms for both (R1) and (R2) paths: a direct mechanism for the (R2) path vs an indirect one, related with "nearly trapped" trajectories in the intermediate complexes, for the (R1) path.
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Affiliation(s)
- J Espinosa-Garcia
- Área de Química Física and Instituto de Computación Científica Avanzada, Universidad de Extremadura, 06071 Badajoz, Spain
| | - C Rangel
- Área de Química Física and Instituto de Computación Científica Avanzada, Universidad de Extremadura, 06071 Badajoz, Spain
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300
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Beltrán FJ, Chávez AM, Cintas P, Martínez RF. Mechanistic Insights into the Oxidative Degradation of Formic and Oxalic Acids with Ozone and OH Radical. A Computational Rationale. J Phys Chem A 2023; 127:1491-1498. [PMID: 36749871 PMCID: PMC9940222 DOI: 10.1021/acs.jpca.2c08091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Gas-phase and aqueous oxidations of formic and oxalic acids with ozone and OH radicals have been thoroughly examined by DFT methods. Such acids are not only important feedstocks for the iterative construction of other organic compounds but also final products generated by mineralization and advanced oxidation of higher organics. Our computational simulation unravels both common and distinctive reaction channels, albeit consistent with known H atom abstraction pathways and formation of hydropolyoxide derivatives. Notably, reactions with neutral ozone and OH radical proceed through low-energy concerted mechanisms involving asynchronous transition structures. For formic acid, carbonylic H-abstraction appears to be more favorable than the dissociative abstraction of the acid proton. Formation of long oxygen chains does not cause a significant energy penalty and highly oxygenated products are stable enough, even if subsequent decomposition releases environmentally benign side substances like O2 and H2O.
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Affiliation(s)
- Fernando J. Beltrán
- Departamento
de Ingeniería Química y Química Física,
Facultad de Ciencias, and Instituto Universitario de Investigación
del Agua, Cambio Climático y Sostenibilidad, (IACYS), Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain,
| | - Ana María Chávez
- Departamento
de Ingeniería Química y Química Física,
Facultad de Ciencias, and Instituto Universitario de Investigación
del Agua, Cambio Climático y Sostenibilidad, (IACYS), Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain
| | - Pedro Cintas
- Departamento
de Química Orgánica e Inorgánica, Facultad de
Ciencias, and Instituto Universitario de Investigación del
Agua, Cambio Climático y Sostenibilidad, (IACYS), Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain
| | - R. Fernando Martínez
- Departamento
de Química Orgánica e Inorgánica, Facultad de
Ciencias, and Instituto Universitario de Investigación del
Agua, Cambio Climático y Sostenibilidad, (IACYS), Universidad de Extremadura, Avenida de Elvas s/n, 06006 Badajoz, Spain,
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