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Articles 1 - 30 of 164
Full-Text Articles in Chemistry
Effective And Selective Dna Modification On Bacterial Membranes, Qian Tian, Yousef Bagheri, Puspam Keshri, Rigumula Wu, Kewei Ren, Qikun Yu, Mingxu You
Effective And Selective Dna Modification On Bacterial Membranes, Qian Tian, Yousef Bagheri, Puspam Keshri, Rigumula Wu, Kewei Ren, Qikun Yu, Mingxu You
Chemistry Department Faculty Publication Series
With highly precise self-assembly and programmability, DNA has been widely used as a versatile material in nanotechnology and synthetic biology. Recently, DNA-based nanostructures and devices have been engineered onto eukaryotic cell membranes for various exciting applications in the detection and regulation of cell functions. While in contrast, the potential of applying DNA nanotechnology for bacterial membrane studies is still largely underexplored, which is mainly due to the lack of tools to modify DNA on bacterial membranes. Herein, using lipid-DNA conjugates, we have developed a simple, fast, and highly efficient system to engineer bacterial membranes with designer DNA molecules. We have …
Polymeric Nanoparticles Active Against Dual-Species Bacterial Biofilms, Jessa Marie V. Makabenta, Jungmi Park, Cheng-Hsuan Li, Aritra Nath Chattopadhyay, Ahmed Nabawy, Ryan F. Landis, Akash Gupta, Suzannah Schmidt-Malan, Robin Patel, Vincent M. Rotello
Polymeric Nanoparticles Active Against Dual-Species Bacterial Biofilms, Jessa Marie V. Makabenta, Jungmi Park, Cheng-Hsuan Li, Aritra Nath Chattopadhyay, Ahmed Nabawy, Ryan F. Landis, Akash Gupta, Suzannah Schmidt-Malan, Robin Patel, Vincent M. Rotello
Chemistry Department Faculty Publication Series
Biofilm infections are a global public health threat, necessitating new treatment strategies. Biofilm formation also contributes to the development and spread of multidrug-resistant (MDR) bacterial strains. Biofilm-associated chronic infections typically involve colonization by more than one bacterial species. The co-existence of multiple species of bacteria in biofilms exacerbates therapeutic challenges and can render traditional antibiotics ineffective. Polymeric nanoparticles offer alternative antimicrobial approaches to antibiotics, owing to their tunable physico-chemical properties. Here, we report the efficacy of poly(oxanorborneneimide) (PONI)-based antimicrobial polymeric nanoparticles (PNPs) against multi-species bacterial biofilms. PNPs showed good dual-species biofilm penetration profiles as confirmed by confocal laser scanning microscopy. …
Exogenous Introduction Of Initiator And Executioner Caspases Results In Different Apoptotic Outcomes, Francesca Anson, S Thayumanavan, Jeanne A. Hardy
Exogenous Introduction Of Initiator And Executioner Caspases Results In Different Apoptotic Outcomes, Francesca Anson, S Thayumanavan, Jeanne A. Hardy
Chemistry Department Faculty Publication Series
The balance of pro-apoptotic and pro-survival proteins defines a cell's fate. These processes are controlled through an interdependent and finely tuned protein network that enables survival or leads to apoptotic cell death. The caspase family of proteases is central to this apoptotic network, with initiator and executioner caspases, and their interaction partners, regulating and executing apoptosis. In this work, we interrogate and modulate this network by exogenously introducing specific initiator or executioner caspase proteins. Each caspase is exogenously introduced using redox-responsive polymeric nanogels. Although caspase-3 might be expected to be the most effective due to the centrality of its role …
Persistent Radical Anion Polymers Based On Naphthalenediimide And A Vinylene Spacer, Sashi Debnath, Connor J. Boyle, Dongming Zhou, Bryan M. Wong, Kevin R. Kittilstved, Dhandapani Venkataraman
Persistent Radical Anion Polymers Based On Naphthalenediimide And A Vinylene Spacer, Sashi Debnath, Connor J. Boyle, Dongming Zhou, Bryan M. Wong, Kevin R. Kittilstved, Dhandapani Venkataraman
Chemistry Department Faculty Publication Series
Persistent n-doped conjugated polymers were achieved by doping the electron accepting PDNDIV and PFNDIVpolymers with ionic (TBACN) or neutral (TDAE) dopants. The great electron affinities, as indicated by the low LUMO levels of PDNDIV (−4.09 eV) and PFNDIV (−4.27 eV), facilitated the chemical reduction from either TBACN or TDAE. The low-lying LUMOs of the neutral polymers PDNDIV and PFNDIV were achieved by incorporation of vinylene spacers between the electron poor NDI units to increase the conjugation length without the use of an electron donor, and this was lowered further by an electron-withdrawing fluorinated N-substituent on the NDI moiety. The …
3' End Additions By T7 Rna Polymerase Are Rna Self-Templated, Distributive And Diverse In Character––Rna-Seq Analyses, Yasaman Gholamalipour, Aruni K. Mudiyanselage, Craig T. Martin
3' End Additions By T7 Rna Polymerase Are Rna Self-Templated, Distributive And Diverse In Character––Rna-Seq Analyses, Yasaman Gholamalipour, Aruni K. Mudiyanselage, Craig T. Martin
Chemistry Department Faculty Publication Series
Synthetic RNA is widely used in basic science, nanotechnology and therapeutics research. The vast majority of this RNA is synthesized in vitro by T7 RNA polymerase or one of its close family members. However, the desired RNA is generally contaminated with products longer and shorter than the DNA-encoded product. To better understand these undesired byproducts and the processes that generate them, we analyze in vitro transcription reactions using RNA-Seq as a tool. The results unambiguously confirm that product RNA rebinds to the polymerase and self-primes (in cis) generation of a hairpin duplex, a process that favorably competes with promoter driven …
High Energy Density In Azobenzene-Based Materials For Photo-Thermal Batteries Via Controlled Polymer Architecture And Polymer-Solvent Interactions, Seung Pyo Jeong, Lawrence A. Renna, Connor J. Boyle, Hyunwook S. Kwak, Edward Harder, Wolfgang Damm, Dhandapani Venkataraman
High Energy Density In Azobenzene-Based Materials For Photo-Thermal Batteries Via Controlled Polymer Architecture And Polymer-Solvent Interactions, Seung Pyo Jeong, Lawrence A. Renna, Connor J. Boyle, Hyunwook S. Kwak, Edward Harder, Wolfgang Damm, Dhandapani Venkataraman
Chemistry Department Faculty Publication Series
Energy densities of ~510 J/g (max: 698 J/g) have been achieved in azobenzene-based syndiotactic-rich poly(methacrylate) polymers. The processing solvent and polymer-solvent interactions are important to achieve morphologically optimal structures for high-energy density materials. This work shows that morphological changes of solid-state syndiotactic polymers, driven by different solvent processings play an important role in controlling the activation energy of Z-E isomerization as well as the shape of the DSC exotherm. Thus, this study shows the crucial role of processing solvents and thin film structure in achieving higher energy densities.
Carbon Nanotubes And Graphene As Additives In 3d Printing, Lara A. Al-Hariri, Branden Leonhardt, Mesopotamia Nowotarski, James Magi, Kaelynn Chambliss, Thaís Venzel, Sagar Delekar, Steve Acquah
Carbon Nanotubes And Graphene As Additives In 3d Printing, Lara A. Al-Hariri, Branden Leonhardt, Mesopotamia Nowotarski, James Magi, Kaelynn Chambliss, Thaís Venzel, Sagar Delekar, Steve Acquah
Chemistry Department Faculty Publication Series
3D printing is a revolutionary technology for the consumer and industrial markets. As the technology for 3D printing has expanded, the need for multi-materials that support fused deposition modeling and other forms of additive manufacturing is increasing. 3D printing filaments infused with carbon nanotubes and graphene are now commercially available, with the promise of producing conductive composites. This chapter explores some of the research, products, and challenges involved in bringing the next generation of functional printing materials to the consumer market.
Integrating Arsenic-Related Environmental Topics Into The Education Of The Next Generation Of Citizens For Arsenic-Hit Communities: Awareness And Mobilization, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Immobilization Of Scandium And Other Chemical Elements In Systems With Aquatic Macrophyte, S. A. Ostroumov, M. E. Johnson, Julian Tyson, B. Xing
Immobilization Of Scandium And Other Chemical Elements In Systems With Aquatic Macrophyte, S. A. Ostroumov, M. E. Johnson, Julian Tyson, B. Xing
Chemistry Department Faculty Publication Series
No abstract provided.
Keeping Track Of Our Arsenic Intake: A Possible Citizen-Science Project, Julian Tyson
Keeping Track Of Our Arsenic Intake: A Possible Citizen-Science Project, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Non-Chromatographic Speciation Of Inorganic Arsenic By Atomic Fluorescence Spectrometry With Flow Injection Hydride Generation With A Tetrahydroborate-Form Anion-Exchanger, N. Wang, Julian Tyson
Non-Chromatographic Speciation Of Inorganic Arsenic By Atomic Fluorescence Spectrometry With Flow Injection Hydride Generation With A Tetrahydroborate-Form Anion-Exchanger, N. Wang, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Trace Determination Of Total Mercury In Rice By Conventional Inductively Coupled Plasma Mass Spectrometry, Lindsay R. Drennan-Harris, Sirinapa Wongwilawan, Julian Tyson
Trace Determination Of Total Mercury In Rice By Conventional Inductively Coupled Plasma Mass Spectrometry, Lindsay R. Drennan-Harris, Sirinapa Wongwilawan, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Inorganic Arsenic In Water By A Quartz Crystal Microbalance, C Li, A. E. Basaran, Julian Tyson
Determination Of Inorganic Arsenic In Water By A Quartz Crystal Microbalance, C Li, A. E. Basaran, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Dispersive Liquid–Liquid Microextraction And Microsample Injection System Coupled With Inductively Coupled Plasma-Mass Spectrometry For Inorganic Arsenic Speciation In Natural Waters, Latif Elci, Aydan Elci, Tiffany Berg, Julian Tyson
Dispersive Liquid–Liquid Microextraction And Microsample Injection System Coupled With Inductively Coupled Plasma-Mass Spectrometry For Inorganic Arsenic Speciation In Natural Waters, Latif Elci, Aydan Elci, Tiffany Berg, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Improving The Accuracy And Precision Of An Arsenic Field Test Kit: Increased Reaction Time And Digital Image Analysis, James Kearns, Julian Tyson
Improving The Accuracy And Precision Of An Arsenic Field Test Kit: Increased Reaction Time And Digital Image Analysis, James Kearns, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Study Of The Interactions Between Elodea Canadensis And Cuo Nanoparticles, M. E. Johnson, S. A. Ostroumov, Julian Tyson, B. Xing
Study Of The Interactions Between Elodea Canadensis And Cuo Nanoparticles, M. E. Johnson, S. A. Ostroumov, Julian Tyson, B. Xing
Chemistry Department Faculty Publication Series
No abstract provided.
Phytoprotective Influence Of Bacteria On Growth And Cadmium Accumulation In The Aquatic Plant Lemna Minor, Lisa M Stout, Elena N Dodova, Julian Tyson, Klaus Nusslein
Phytoprotective Influence Of Bacteria On Growth And Cadmium Accumulation In The Aquatic Plant Lemna Minor, Lisa M Stout, Elena N Dodova, Julian Tyson, Klaus Nusslein
Chemistry Department Faculty Publication Series
No abstract provided.
Simultaneous Detection Of Selenium By Atomic Fluorescence And Sulfur By Molecular Emission By Flow-Injection Hydride Generation With On-Line Reduction For The Determination Of Selenate, Sulfate And Sulfite, Jf Tyson, Cd Palmer
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Lead In Wine And Rum Samples By Flow Injection-Hydride Generation-Atomic Absorption Spectrometry, L Elci, Z Arslan, Jf Tyson
Determination Of Lead In Wine And Rum Samples By Flow Injection-Hydride Generation-Atomic Absorption Spectrometry, L Elci, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Insights Into The Chemical Biology Of Selenium, Rs Glass, Mj Berry, E Block, Ht Boakye, Ba Carlson, J Gailer, Gn George, Vn Gladyshev, Dl Hatfield, Ne Jacobsen, S Johnson, C Kahakachchi, R Kaminski, Sa Manley, H Mix, Ij Pickering, Ej Prenner, K Saira, A Skowronska, Jf Tyson, Pc Uden, Q Wu, Xm Xu, R Yamdagni, Y Zhang
Insights Into The Chemical Biology Of Selenium, Rs Glass, Mj Berry, E Block, Ht Boakye, Ba Carlson, J Gailer, Gn George, Vn Gladyshev, Dl Hatfield, Ne Jacobsen, S Johnson, C Kahakachchi, R Kaminski, Sa Manley, H Mix, Ij Pickering, Ej Prenner, K Saira, A Skowronska, Jf Tyson, Pc Uden, Q Wu, Xm Xu, R Yamdagni, Y Zhang
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Lead By Hydride Generation Atom Trapping Flame Atomic Absorption Spectrometry, N Ertas, Z Arslan, Jf Tyson
Determination Of Lead By Hydride Generation Atom Trapping Flame Atomic Absorption Spectrometry, N Ertas, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Trace Elements In Siliceous Samples By Icp-Ms After Precipitation Of Silicon As Sodium Fluorosilicate, Z Arslan, Jf Tyson
Determination Of Trace Elements In Siliceous Samples By Icp-Ms After Precipitation Of Silicon As Sodium Fluorosilicate, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
High Throughput Sample Introduction System For The Analysis Of Drinking Waters And Wastewaters By Icp-Ms, M Mahar, Jf Tyson, K Neubauer, Z Grosser
High Throughput Sample Introduction System For The Analysis Of Drinking Waters And Wastewaters By Icp-Ms, M Mahar, Jf Tyson, K Neubauer, Z Grosser
Chemistry Department Faculty Publication Series
No abstract provided.
The Arsenic Project: Creating Authentic Research Experiences For First-Year Undergraduates, Julian Tyson
The Arsenic Project: Creating Authentic Research Experiences For First-Year Undergraduates, Julian Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Slurry Sampling For Determination Of Lead In Marine Plankton By Electrothermal Atomic Absorption Spectrometry, Z Arslan, Jf Tyson
Slurry Sampling For Determination Of Lead In Marine Plankton By Electrothermal Atomic Absorption Spectrometry, Z Arslan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Real And Composite Emission Lines As Internal Standards In The Determination Of As, Se And Sb By Inductively Coupled Plasma Optical Emission Spectrometry, Fm Pan, Jf Tyson
Real And Composite Emission Lines As Internal Standards In The Determination Of As, Se And Sb By Inductively Coupled Plasma Optical Emission Spectrometry, Fm Pan, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Influences Of Cadmium And Zinc Interaction And Humic Acid On Metal Accumulation In Ceratophyllum Demersum, S Bunluesin, P Pokethitiyook, Gr Lanza, Jf Tyson, M Kruatrachue, Bs Xing, S Upatham
Influences Of Cadmium And Zinc Interaction And Humic Acid On Metal Accumulation In Ceratophyllum Demersum, S Bunluesin, P Pokethitiyook, Gr Lanza, Jf Tyson, M Kruatrachue, Bs Xing, S Upatham
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Methylmercury And Inorganic Mercury In Water Samples By Slurry Sampling Cold Vapor Atomic Absorption Spectrometry In A Flow Injection System After Preconcentration On Silica C-18 Modified, Sr Segade, Jf Tyson
Chemistry Department Faculty Publication Series
No abstract provided.
Determination Of Selenium By Flow Injection Hydride Generation Inductively Coupled Plasma Optical Emission Spectrometry, Pc Hernandez, Jf Tyson, Pc Uden, D Yates
Determination Of Selenium By Flow Injection Hydride Generation Inductively Coupled Plasma Optical Emission Spectrometry, Pc Hernandez, Jf Tyson, Pc Uden, D Yates
Chemistry Department Faculty Publication Series
No abstract provided.
Simultaneous Speciation Of Arsenic And Selenium In Human Urine By High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry, Fm Pan, Jf Tyson, Pc Uden
Simultaneous Speciation Of Arsenic And Selenium In Human Urine By High-Performance Liquid Chromatography Inductively Coupled Plasma Mass Spectrometry, Fm Pan, Jf Tyson, Pc Uden
Chemistry Department Faculty Publication Series
No abstract provided.