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Electrochemical sensor for selective tyramine determination, amplified by a molecularly imprinted polymer film (open access)

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
Covalency in Fe2O3 and FeO: Consequences for XPS satellite intensity (open access)

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
A general large-scale synthesis approach for crystalline porous materials (open access)

A general large-scale synthesis approach for crystalline porous materials

Article describes how crystalline porous materials such as covalent organic frameworks (COFs) metal-organic frameworks (MOFs) and porous organic changes (POCs) have been widely applied in various fields with outstanding performances. In this work, the authors developed a general approach comprising high pressure homogenization (HPH), which can realize large-scale synthesis of crystalline porous materials including COFs, MOFs, and POCs under benign conditions.
Date: November 2, 2023
Creator: Liu, Xiongli; Wang, An; Wang, Chunping; Li, Jinli; Zhang, Zhiyuan; Al-Enizi, Abdullah M. et al.
Object Type: Article
System: The UNT Digital Library
[Examining the Role of Nanomaterials and Optical Sensors for Genomics Research] captions transcript

[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
A Novel ppb-Level Sensitive and Highly Selective Europium-Based Diketone Luminescent Sensor for the Quantitative Detection of Aluminum Ions in Water Samples (open access)

A Novel ppb-Level Sensitive and Highly Selective Europium-Based Diketone Luminescent Sensor for the Quantitative Detection of Aluminum Ions in Water Samples

Article describes how a novel Eu(tta)3([4,4′-(t-bu)2-2,2′-bpy)] complex (tta-thenoyltrifluoroacetone), a ratiometric luminescent-based optical sensor for the quantitative determination of aluminum ion, is synthesized and characterized using XRD and 1H NMR. The sensor reported here is tested for 11 common cations and shows no interference on sensitivity. According to the authors, this is the first known Eu-based luminescence sensor that successfully exhibited the ability to detect aluminum ions in ppb levels in aqueous environments.
Date: November 6, 2023
Creator: Rajitha Perera, Nawagamu A. K.; Shankar, Sindhu K.; Archambault, Cynthia M.; Nesterov, Vladimir N.; Marpu, Sreekar; Yan, Hao et al.
Object Type: Article
System: The UNT Digital Library
Reweighted Manifold Learning of Collective Variables from Enhanced Sampling Simulations (open access)

Reweighted Manifold Learning of Collective Variables from Enhanced Sampling Simulations

Article provides a general reweighting framework based on anisotropic diffusion maps for manifold learning that takes into account that the learning data set is sampled from a biased probability distribution. The authors show that their proposed framework can be used in many manifold learning techniques on data from both standard and enhanced sampling simulations.
Date: November 11, 2022
Creator: Rydzewski, Jakub; Chen, Ming; Ghosh, Tushar K. & Valsson, Omar
Object Type: Article
System: The UNT Digital Library
Three Component Cascade Reaction of Cyclohexanones, Aryl Amines, and Benzoylmethylene Malonates: Cooperative Enamine-Brønsted Acid Approach to Tetrahydroindoles (open access)

Three Component Cascade Reaction of Cyclohexanones, Aryl Amines, and Benzoylmethylene Malonates: Cooperative Enamine-Brønsted Acid Approach to Tetrahydroindoles

Article discusses how a three-component cascade reaction comprising cyclic ketones, arylamines, and benzoylmethylene malonates has been developed to access 4,5,6,7-tetrahydro-1H-indoles. Furthermore, the reaction was achieved through cooperative enamine-Brønsted catalysis in high yields with wide substrate scopes.
Date: November 30, 2022
Creator: Vasquez, Jose Cortes; Alharbi, Waad S.; Davis, Jacqkis; Moore, Alexia; Nesterov, Vladimir N.; Cundari, Thomas R., 1964- et al.
Object Type: Article
System: The UNT Digital Library
In vitro anti-diabetic effects and phytochemical profiling of novel varieties of Cinnamomum zeylanicum (L.) extracts (open access)

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
Charge stabilization via electron exchange: excited charge separation in symmetric, central triphenylamine derived, dimethylaminophenyl–tetracyanobutadiene donor–acceptor conjugates (open access)

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 (open access)

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