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1,045 Matching Results
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Experimental and kinetic modeling study of oxidation of acetonitrile
Article asserts that oxidation of acetonitrile has been studied in a flow reactor in the absence and presence of nitric oxide. A detailed chemical kinetic model for oxidation of acetonitrile was developed, based on a critical evaluation of data from literature. This is the accepted manuscript version of the published article.
Date:
April 10, 2021
Creator:
Alzueta, María U.; Guerrero, Marta; Millera, Angela; Marshall, Paul & Glarborg, Peter
Object Type:
Article
System:
The UNT Digital Library
Green synthesis of olefin-linked covalent organic frameworks for hydrogen fuel cell applications
This article creates a green strategy to fabricate a highly crystalline olefin-linked pyrazine-based covalent organic framework (COF) with high robustness and porosity under solvent-free conditions. This study opens up new possibilities for the green synthesis of advanced materials and provides important guidance for the rational design and synthesis of polymeric materials for proton-exchange membrane fuel cell applications.
Date:
March 31, 2021
Creator:
Wang, Zhifang; Yang, Yi; Zhao, Zhengfeng; Zhang, Penghui; Zhang, Yushu; Liu, Jinjin et al.
Object Type:
Article
System:
The UNT Digital Library
Accelerated reliability testing of Cu-Al bimetallic contact by a micropattern corrosion testing platform for wire bond device application
This article presents a novel method of in-situ investigation of the device corrosion process to capture the real time mechanistic information not obtained in standard reliability testing.
Date:
March 26, 2021
Creator:
Ashok Kumar, Goutham Isaac; Alptekin, John; Caperton, Joshua; Salunke, Ashish & Chyan, Oliver Ming-Ren
Object Type:
Article
System:
The UNT Digital Library
Covalent organic framework nanofluidic membrane as a platform for highly sensitive bionic thermosensation
Article reporting a nanofluidic membrane based on an ionic covalent organic framework (COF) that is capable of intelligently monitoring temperature variations and expressing it in the form of continuous potential differences. This article pioneers a way to explore COFs for mimicking the sophisticated signaling system observed in the nature.
Date:
March 23, 2021
Creator:
Zhang, Pengcheng; Chen, Sifan; Zhu, Changjia; Hou, Linxiao; Xian, Weipeng; Zuo, Xiuhui et al.
Object Type:
Article
System:
The UNT Digital Library
Theoretical modeling study of the reaction H + CF4 → HF + CF3
This article determines the rate constant of the reaction H + CF₄ → HF + CF₃, characterizing its transition state by quantum-chemical methods.
Date:
March 23, 2021
Creator:
Cobos, Carlos J.; Knight, Gary; Marshall, Paul & Troe, Jürgen
Object Type:
Article
System:
The UNT Digital Library
Pyrazinacenes exhibit on-surface oxidation-state-dependent conformational and self-assembly behaviours
This article reports pyrazinacenes containing the dihydro-decaazapentacene and dihydro-octaazatetracene chromophores and compares their properties/functions as a model case at an oxidizing metal substrate.
Date:
March 10, 2021
Creator:
Miklík, David; Mousavi, S. Fatemeh; Burešová, Zuzana; Middleton, Anna; Matsushita, Yoshitaka; Labuta, J. et al.
Object Type:
Article
System:
The UNT Digital Library
A window-space-directed assembly strategy for the construction of supertetrahedron-based zeolitic mesoporous metal–organic frameworks with ultramicroporous apertures for selective gas adsorption
Article presenting a novel window-space-directed assembly strategy for the synthesis of zeolitic mesoporous MOFs with ultramicroporous apertures based on supertetrahedral building units. This article provides an effective and innovative strategy and paves the way for the future design and synthesis of functional, highly connected materials for various applications.
Date:
March 5, 2021
Creator:
Zhang, Lei; Li, Fangfang; You, Jianjun; Hua, Nengbin; Wang, Qianting; Si, Junhui et al.
Object Type:
Article
System:
The UNT Digital Library
Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin
This article presents a new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, that is shown to undergo excited state charge separation, which is enhanced by axial F⁻ binding to the Zn center. Spectroelectrochemical studies are used to identify the spectra of charge separated states and charge separation upon photoexcitation of ZnP is established.
Date:
February 24, 2021
Creator:
Chahal, Mandeep K.; Liyanage, Anudradha; Alsaleh, Ajyal Z.; Karr, P. A.; Hill, Jonathan P. & D'Souza, Francis
Object Type:
Article
System:
The UNT Digital Library
Calculation of the Vapour Pressure of Organic Molecules by Means of a Group-Additivity Method and Their Resultant Gibbs Free Energy and Entropy of Vaporization at 298.15 K
Article presenting the calculation of the vapour pressure of organic molecules at 298.15 K using a commonly applicable computer algorithm based on the group-additivity method. The standard entropy of vaporization ΔS°vap has been determined and compared with experimental data of 1129 molecules, exhibiting excellent conformance with a correlation coefficient R2 of 0.9598, a standard error σ of 8.14 J/mol/K and a medium absolute deviation of 4.68%.
Date:
February 17, 2021
Creator:
Naef, Rudolf & Acree, William E. (William Eugene)
Object Type:
Article
System:
The UNT Digital Library
Bifunctional activation of methane by bioinspired transition metal complexes. A simple methane protease model
Article modeling Metal-based bifunctional methane activators using density functional theory. The research yields insight into possible avenues for bio-inspired methane activators.
Date:
February 15, 2021
Creator:
Anderson, Mary E.; Marks, Michael B. & Cundari, Thomas R., 1964-
Object Type:
Article
System:
The UNT Digital Library
Kinetic fall-off behavior for the Cl + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction
Article discusses how rate coefficients, k, for the gas-phase Cl + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction were measured over the 15–500 torr (He and N2 bath gas) pressure range at temperatures between 283 and 323 K. An atmospheric degradation mechanism for C4H2O3 is proposed based on the observed product yields and theoretical calculations of ring-opening pathways and activation barrier energies at the CBS-QB3 level of theory. This is the accepted manuscript version of the published article.
Date:
February 15, 2021
Creator:
Chattopadhyay, Aparajeo; Gierczak, Tomasz; Marshall, Paul; Papadimitriou, Vassileios C. & Burkholder, James B. (James Bart), 1954-
Object Type:
Article
System:
The UNT Digital Library
Disentangling Orbital and Valley Hall Effects in Bilayers of Transition Metal Dichalcogenides
This article shows that a bilayer of 2H-MoS₂ is an orbital Hall insulator that exhibits a sizeable orbital Hall effect in the absence of both spin and valley Hall effects. The results are based on density functional theory and low-energy effective model calculations and strongly suggest that bilayers of TMDs are highly suitable platforms for direct observation of the orbital Hall insulating phase in two-dimensional materials.
Date:
February 5, 2021
Creator:
Cysne, Tarik P.; Costa, Marcio; Canonico, Luis M.; Buongiorno Nardelli, Marco; Muniz, R. B. & Rappoport, Tatiana G.
Object Type:
Article
System:
The UNT Digital Library
Ignition delay times of NH3/DME blends at high pressure and low DME fraction: RCM experiments and simulations
Authors of the article describe how autoignition delay times of ammonia/dimethyl ether (NH3/DME) mixtures were measured in a rapid compression machine with DME fractions of 0, 2 and 5 and 100% in the fuel. Analysis of the mechanism indicates that this 'early DME oxidation' generates reactive species that initiate the oxidation of ammonia, which in turn begins heat release that raises the temperature and accelerates the oxidation process towards ignition. This is the accepted manuscript version of the published article.
Date:
January 14, 2021
Creator:
Dai, Liming; Glarborg, Peter; Gersen, Sander; Marshall, Paul; Mokhov, Anatoli & Levinsky, Howard
Object Type:
Article
System:
The UNT Digital Library
Calculation of Abraham Model L-Descriptor and Standard Molar Enthalpies of Vaporization for Linear C7-C14 Alkynes From Gas Chromatographic Retention Index Data
Article determines Abraham model L solute descriptors for an additional 33 linear C7-C14 alkynes based on published gas chromatographic retention indices for solutes eluted from capillary columns coated with squalane and apiezon L stationary phases.
Date:
2021
Creator:
Shanmugam, Neel; Eddula, Shrika; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Object Type:
Article
System:
The UNT Digital Library
A new synthetic route for the preparation of [Os3(CO)10(μ-OH)(μ-H)] and its reaction with bis(diphenylphosphino)methane (dppm): syntheses and X-ray structures of two isomers of [Os3(CO)8(μ-OH)(μ-H)(μ-dppm)] and [Os3(CO)7(μ3-CO)(μ3-O)(μ-dppm)]
Article describes a convenient synthetic method for the preparation of the hydroxy-bridged triosmium cluster [Os₃(CO)₁₀(μ-OH)(μ-H)] along with the re-evaluation of the reaction of this cluster with dppm that has led to the isolation of a new isomer for [Os₃(CO)₈(μ-OH)(μ-H)(μ-dppm)].
Date:
December 17, 2020
Creator:
Richmond, Michael G.; Joy, Tuhinur R.; Bhoumik, Nikhil C.; Ghosh, Shishir & Kabir, Shariff E.
Object Type:
Article
System:
The UNT Digital Library
Spatial Engineering Direct Cooperativity between Binding Sites for Uranium Sequestration
This article gives a full account of the conceptual and experimental development from randomly distributed functionalities to a convergent arrangement that facilitates cooperative binding is given, thus conferring exceptional affinity toward the analyte of interest. The concept presented here uncovers a new paradigm in the design of efficient sorbent materials by manipulating the spatial distribution to amplify the cooperation of functions.
Date:
December 4, 2020
Creator:
Sun, Qi; Song, Yanpei; Aguila, Briana; Ivanov, Aleksandr S.; Bryantsev, Vyacheslav S. & Ma, Shengqian
Object Type:
Article
System:
The UNT Digital Library
[Examining the Role of Nanomaterials and Optical Sensors for Genomics Research]
This presentation introduces the possibility of using nanomaterials and optically active sensors in genomics research. The presenter shares the history and applications of nanomaterials, introduces their research into optical-luminescent sensors and optically active plasmonic nanoparticles, and explores how they might be used in genomics. It was presented at the UNT Transdisciplinary Conference on Ancestral Genomics Research which was held virtually on November 20-21, 2020.
Date:
November 21, 2020
Creator:
Marpu, Sreekar
Object Type:
Video
System:
The UNT Digital Library
Covalency in Fe2O3 and FeO: Consequences for XPS satellite intensity
Article examines the covalent character of the interaction between the metal cation and the oxygen ligands for two Fe oxides with different nominal oxidation states, Fe(II)O, and Fe(III)₂O₃.
Date:
November 17, 2020
Creator:
Bagus, Paul S.; Nelin, Connie J.; Brundle, C. R.; Crist, B. Vincent; Lahiri, N. & Rosso, Kevin M.
Object Type:
Article
System:
The UNT Digital Library
Electrochemical sensor for selective tyramine determination, amplified by a molecularly imprinted polymer film
This article devised, fabricated, and tested a molecularly imprinted polymer (MIP) film based electrochemical sensor for selective determination of tyramine.
Date:
November 17, 2020
Creator:
Ayerdurai, Viknasvarri; Cieplak, Maciej; Noworyta, Krzysztof R.; Gajda, Marianna; Ziminska, Agnieszka; Sosnowska, Marta et al.
Object Type:
Article
System:
The UNT Digital Library
Charge stabilization via electron exchange: excited charge separation in symmetric, central triphenylamine derived, dimethylaminophenyl–tetracyanobutadiene donor–acceptor conjugates
This article hypothesizes and demonstrates a new mechanism to stabilize the charge separated states via the process of electron exchange among the different acceptor entities in multimodular donor–acceptor conjugates. This work constitutes the first example of stabilizing charge-separated states via the process of electron exchange.
Date:
November 13, 2020
Creator:
Yadav, Indresh S.; Alsaleh, Ajyal Z.; Misra, Rajneesh & D'Souza, Francis
Object Type:
Article
System:
The UNT Digital Library
Chemical and Genetic Studies on the Formation of Pyrrolones During the Biosynthesis of Cytochalasans
This article investigates the role of the highly conserved α,β-hydrolase enzymes PyiE and ORFZ during the biosynthesis of pyrichalasin H and the ACE1 metabolite, respectively, using gene knockout and complementation techniques. Taken together the results suggest that the α,β-hydrolase enzymes are essential for first ring cyclisation, but the precise nature of the intermediates remains to be determined.
Date:
November 4, 2020
Creator:
Zhang, Haili; Hantke, Verena; Bruhnke, Pia; Skellam, Elizabeth & Cox, Russell J.
Object Type:
Article
System:
The UNT Digital Library
In vitro anti-diabetic effects and phytochemical profiling of novel varieties of Cinnamomum zeylanicum (L.) extracts
Article exploring the use of pressured and decoctions water to extract anti-diabetic phytochemicals from cinnamon. The extensive metabolite profiling of novel SW and SG extracts and comparison of that with commercially available CC are reported for the first time in this study. The C. zeylanicum, SW accession holds some promise in the management of diabetes.
Date:
April 27, 2020
Creator:
Wariyapperuma, W.A. Niroshani M.; Kannangara, Sagarika; Wijayasinghe, Yasanandana S.; Subramanium, Sri & Jayawardena, Bimali
Object Type:
Article
System:
The UNT Digital Library
Aggregation-induced phosphorescence sensitization in two heptanuclear and decanuclear gold–silver sandwich clusters
This article obtains two few-atom heterometallic gold–silver hepta-/decanuclear clusters, denoted Au₆Ag and Au₉Ag, and determines their structures by X-ray diffraction and mass spectrometry.
Date:
October 30, 2020
Creator:
Lu, Zhou; Yang, Yu-Jie; Ni, Wen-Xiu; Li, Mian; Zhao, Yifang; Huang, Yong-Liang et al.
Object Type:
Article
System:
The UNT Digital Library
Efficient separation of xylene isomers by a guest-responsive metal–organic framework with rotational anionic sites
Article demonstrating the adaptively molecular discrimination of xylene isomers by employing a NbOF52−-pillared metal–organic framework (NbOFFIVE-bpy-Ni, also referred to as ZU-61) with rotational anionic sites.
Date:
October 28, 2020
Creator:
Cui, Xili; Niu, Zheng; Shan, Chuan; Yang, Lifeng; Hu, Jianbo; Wang, Qingju et al.
Object Type:
Article
System:
The UNT Digital Library