UNT Scholarly Works - 1,036 Matching Results

Search Results

prev Results: 97 - 120 next
open access

Formal oxo- and aza-[3 + 2] reactions of α-enaminones and quinones: a double divergent process and the roles of chiral phosphoric acid and molecular sieves

Description: Article develops a double divergent process for the reaction of α-enaminones with quinones through facile manipulation of catalyst and additive, leading to structurally completely different products.
Date: September 21, 2020
Creator: Luo, Weiwei; Sun, Zhicheng; Fernando, E. H. Nisala; Nesterov, Vladimir N.; Cundari, Thomas R., 1964- & Wang, Hong
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

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)]

Description: 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.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Reactions of triosmium and triruthenium clusters with 2-ethynylpyridine: new modes for alkyne C–C bond coupling and C–H bond activation

Description: Article investigates the reaction of the trimetallic clusters [H₂Os₃(CO)₁₀] and [Ru₃(CO)₁₀L₂] (L = CO, MeCN) with 2-ethynylpyridine.
Date: August 19, 2020
Creator: Richmond, Michael G.; Joy, Tuhinur R.; Roknuzzaman; Hossain, Emdad; Ghosh, Shishir; Tocher, Derek A. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Sc3N@Ih-C80 based donor–acceptor conjugate: role of thiophene spacer in promoting ultrafast excited state charge separation

Description: Article reports light induced charge separation in a newly synthesized triphenylamine–thiophene-Sc₃N@Iₕ-C₈₀ donor–acceptor conjugate and its C₆₀ analog, triphenylamine–thiophene-C₆₀ conjugate, and the significance of the thiophene spacer in promoting electron transfer events.
Date: May 27, 2020
Creator: Gobeze, Habtom B.; D'Souza, Francis; Caballero, Rubén; Servián, Luis David; Fernandez-Delgado, Olivia; Echegoyen, Luis et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Electrocatalytic proton-reduction behaviour of telluride-capped triiron clusters: tuning of overpotentials and stabilization of redox states relative to lighter chalcogenide analogues

Description: Article investigating the utility of the non-biological element tellurium as a replacement for the widely biologically-utilized lighter chalcogenides sulfur and selenium in the realm of proton-reduction catalysis.
Date: May 14, 2020
Creator: Hrovat, David A.; Richmond, Michael G.; Rahaman, Ahibur; Lisensky, George C.; Browder-Long, Jess; Nordlander, Ebbe et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Asymmetric hydrogenation of an α-unsaturated carboxylic acid catalyzed by intact chiral transition metal carbonyl clusters – diastereomeric control of enantioselectivity

Description: Article presenting research where twenty clusters of the general formula [(μ-H)₂Ru₃(μ₃-S)(CO)₇(μ-P–P*)] (P–P* = chiral diphosphine of the ferrocene-based Walphos or Josiphos families) have been synthesised and characterised.
Date: February 27, 2020
Creator: Richmond, Michael G.; Abdel-Magied, Ahmed F.; Theibich, Yusuf; Singh, Amrendra K.; Rahaman, Ahibur; Doverbratt, Isa et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Review—Two Different Multiple Photosynthetic Reaction Centers Using Either Zinc Porphyrinic Oligopeptide-Fulleropyrrolidine or Free-Base Porphyrinic Polypeptide-Li+@C60 Supramolecular Complexes

Description: Article presents an overview of two successful examples of photosynthetic reaction center models combined with light-capturing antenna chromophores. This article is part of the JSS Focus Issue on Porphyrins, Phthalocyanines, and Supramolecular Assemblies in Honor of Karl M. Kadish.
Date: August 10, 2020
Creator: D'Souza, Francis; Solladié, Nathalie; Fukuzumi, Shunichi; Ohkubo, Kei; Rein, Régis; Saito, Kenji et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Role of quantum confinement and interlayer coupling in CrI3-graphene magnetic tunnel junctions

Description: Article presents a combination of first principles and quantum ballistic transport calculations to shed important insights from an atomistic viewpoint on the underlying mechanisms governing spin transport in graphene/ CrI₃ junctions.
Date: May 29, 2020
Creator: Buongiorno Nardelli, Marco; Heath, Jonathan J.; Costa, Marcio & Kuroda, Marcelo A.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Electropolymerizable meso-Tetrakis Biphenyl-Bis(bithiophene) Zinc Porphyrin: Ground and Excited State Properties in Solution and in Films with Axially Coordinated C60

Description: Article presenting research where an electropolymerizable zinc porphyrin carrying eight entities of peripheral bithiophene, 4 was newly designed and synthesized.
Date: July 9, 2020
Creator: Ganesan, Ashwin; Shao, Shuai; Seetharaman, Sairaman; Perera, Wijayantha A. & D'Souza, Francis
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Triplet photosensitizer-nanotube conjugates: synthesis, characterization and photochemistry of charge stabilizing, palladium porphyrin/carbon nanotube conjugates

Description: Author Manuscript version of an article investigating the ability of a triplet photosensitizer to generate long-lived charge separated states, in contrast to traditionally used singlet photosensitizers, in covalently functionalized single-walled carbon nanotube hybrids.
Date: April 21, 2020
Creator: Arellano, Luis M.; Gobeze, Habtom B.; Gómez-Escalonilla, María J.; Fierro, Jose Luis G.; D'Souza, Francis & Langa, Fernando
Item Type: Refine your search to only Article
Partner: University of North Texas
open access

Electron Transfer Mediated by Iron Carbonyl Clusters Enhance Light-Driven Hydrogen Evolution in Water by Quantum Dots

Description: This article tests an assembly consisting of CdSe quantum dots and [Fe₃Te₂(CO)₉] as a catalytic system for proton reduction in aqueous solution.
Date: March 9, 2020
Creator: Richmond, Michael G.; Li, Chuanshuai; Rahaman, Ahibur; Lin, Weihua; Mourad, Hassan; Meng, Jie et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Hole-punching for enhancing electrocatalytic activities of 2D graphene electrodes: Less is more

Description: Article develops 2D carbon electrocatalysts based on graphene with and without punched holes and/or N-doping and performs a comprehensive combined experimental and theoretical study on the edge and surface electrocatalytic activities of single-layer 2D graphene sheets.
Date: August 17, 2020
Creator: Xia, Zhenhai; Gao, Yunxiang; Zhang, Lipeng; Li, Chang Ming & Dai, Liming
Item Type: Refine your search to only Article
Partner: University of North Texas
open access

Multi-modal surface analysis of porous films under operando conditions

Description: Article presents thin film analogs of practical catalysts that allow for the implementation of surface characterization tools, including advanced microscopy and operando spectroscopy methodologies.
Date: August 4, 2020
Creator: Eads, Calley N.; Zhong, Jian-Qiang; Kim, Donghun; Akter, Nusnin; Chen, Zhihengyu; Norton, Angela M. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Calculation of Abraham Model L-Descriptor and Standard Molar Enthalpies of Vaporization for Linear C7-C14 Alkynes From Gas Chromatographic Retention Index Data

Description: 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.)
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Analysis of the Fe 2p XPS for hematite 𝛂 Fe2O3: Consequences of covalent bonding and orbital splittings on multiplet splittings

Description: Article analyzes the origins of the complex Fe 2p X-Ray Photoelectron Spectra (XPS) of hematite (α-Fe₂O₃) and is related to the character of the bonding in this compound. This analysis provides a new and novel view of the reasons for XPS binding energies (BEs) and BE shifts, which deepens the current understanding and interpretation of the physical and chemical significance of the XPS. This article is part of the JCP Special Topic on Oxide Chemistry and Catalysis.
Date: January 2, 2020
Creator: Bagus, Paul S.; Nelin, Connie J.; Brundle, C. R.; Lahiri, N.; Ilton, Eugene S. & Rosso, Kevin M.
Item Type: Refine your search to only Article
Partner: UNT College of Science

Flipped and Free: an inverted, active-learning general chemistry course using exclusively OER

Description: Presentation on using a flipped course format and including an open textbook, OpenStax: Chemistry 2e. Flipped courses provide lecture content that is accessible online, and they use class time for active learning activities. It is a part of 2022 University of North Texas Open Access Symposium that was held on March 8, 2022.
Date: March 8, 2022
Creator: Petros, Amy K.
Item Type: Refine your search to only Presentation
Partner: UNT College of Science
open access

Function of Conserved Residues of Human Glutathione Synthetase: Implications for the ATP-Grasp Enzymes

Description: Article examining the mechanism of Glutathione synthetase, an enzyme that belongs to the glutathione synthetase ATP-binding domain-like superfamily. A variety of structural alignment methods were applied and four highly conserved residues of human glutathione synthetase (Glu-144, Asn-146, Lys-305, and Lys-364) were identified in the binding site. The function of these was studied by experimental and computational site-directed mutagenesis.
Date: May 21, 2004
Creator: Dinescu, Adriana; Cundari, Thomas R., 1964-; Bhansali, Vikas S.; Luo, Jia-Li & Anderson, Mary E.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Revision and Extension of a Generally Applicable Group-Additivity Method for the Calculation of the Standard Heat of Combustion and Formation of Organic Molecules

Description: Article presenting the calculation of the heats of combustion ΔH°c and formation ΔH°f of organic molecules at standard conditions using a commonly applicable computer algorithm based on the group-additivity method. This work is a continuation and extension of an earlier publication.
Date: October 10, 2021
Creator: Naef, Rudolf & Acree, William E. (William Eugene)
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

Excited State Charge Separation in an Azobenzene-Bridged Perylenediimide Dimer – Effect of Photochemical Trans-Cis Isomerization

Description: Article demonstrating photoinduced charge transfer and separation events in a newly synthesized azobenzene-bridged perylenediimide-dimer (PDI-dimer). Results offer key insights on the role of the azobenzene bridge and the dimer geometry in governing the excited state charge transfer and separation in symmetrically linked PDI dimer.
Date: September 20, 2021
Creator: Zink-Lorre, Nathalie; Seetharaman, Sairaman; Gutiérrez-Moreno, David; Fernández-Lázaro, Fernando; Karr, Paul A. & D'Souza, Francis
Item Type: Refine your search to only Article
Partner: UNT College of Science
Back to Top of Screen