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Creator | Title | Description | Subject | Date |
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Borodai, Anastasia S. | C-F bond activation | Activation of Carbon-Fluorine Bonds in 2', 3', 4', 5', 6'-Pentafluoroacetophenone through a Transition Metal Complex- Manganese Pentacarbonyl | Carbon; Fluorine; Bond; Activation | 2014-05-30 |
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Minteer, Shelley D. | Characterizing efficiency of multi-Enzyme cascade-based biofuel cells by product analysis | The performance of biofuel cells with enzyme cascades have normally been characterized with open circuit potential, power density, and current density measurements. In this work, we demonstrate that with the method of quantitative product analysis by mass spectrometry, we can obtain other valuable i... | | 2014-01-01 |
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Fleming Aaron M. | Computational studies of electronic circular dichroism spectra predict absolute configuration assignments for the guanine oxidation product 5-carboxamido-5-formamido-2-iminohydantoin | Oxidation of the guanine heterocycle by two electrons can yield the chiral product 5-carboxamido-5-formamido-2-iminohydantoin (2Ih). The 2Ih free base enantiomers were synthesized from 2'-deoxyguanosine oxidized with a Cu(II)/H2O2 oxidant system followed by hydrolysis of the N-glycosidic bond. These... | Guanine oxidation; 2-Iminohydantoin; Electronic circular dichroism; Time-dependent density functional theory | 2014-12-15 |
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Minteer, Shelley D. | Controlled placement of enzymes on carbon nanotubes using comb-branched DNA | Immobilization is not only useful for preserving enzyme activity, but also to adhere an enzyme to a surface, such as an electrode, so that the enzyme does not leach into solution during testing. Current immobilization approaches do not readily allow for adjustments to the distance between the enzyme... | | 2014-01-01 |
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Armentrout, Peter B. | Fifty years of ion and neutral thermochemistry by mass spectrometry | Originating with the appearance potentials for "positive rays", the ability of mass spectrometry to obtain quantitative information about the energetics of both ions and neutrals has evolved dramatically. About 50 years ago, many of the techniques that are now common place were first implemented, th... | | 2014-01-01 |
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Minteer, Shelley D. | Improved performance of a thylakoid bio-solar cell by incorporation of carbon quantum dots | Carbon quantum dots (CQDs) were incorporated into thylakoid bioanodes capable of direct photobioelectrocatalysis in order to increase the photocurrent generation. More thylakoids are in contact with the increased surface area which allows for greater direct electron transfer (DET). Additionally, the... | | 2014-01-01 |
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Minteer, Shelley D. | In recognition of Adam Heller and his enduring contributions to electrochemistry | Recent progress in diverse scientific fields ranging from bioelectrochemistry to battery technology to photoconversion has been deeply influenced by the contributions of Professor Adam Heller of the University of Texas at Austin to electrochemistry and materials science. This focus issue recognizes ... | | 2014-01-01 |
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Minteer, Shelley D. | Investigating the reversible inhibition model of laccase by hydrogen peroxide for bioelectrocatalytic applications | The reversible inhibition of laccase by H2O2 as a bioelectrocatalyst was studied in mediated- and direct electron transfer-based configurations to understand the differences in mechanism. The reversible inhibition of laccase follows a noncompetitive inhibition model when 2,2-azino-bis(3-ethylbenzoth... | | 2014-01-01 |
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Minteer, Shelley D. | Nickel cysteine complexes as anodic electrocatalysts for fuel cells | Compared to platinum, nickel is an inexpensive catalyst that can oxidize methanol in alkaline media. There is a desire to increase nickel loading during electrodeposition for improved performance. In this paper, a nickel cysteine complex (NiCys) is used as the precursor for electrodeposition on glas... | | 2014-01-01 |
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Minteer, Shelley D. | Photobioelectrochemistry: Solar energy conversion and biofuel production with photosynthetic catalysts | Photobioelectrochemical cells are devices which have been developed over the past few decades and use photosynthetic catalysts for solar energy conversion or biofuel production. In this paper, a critical review of reported photobioelectrochemical systems is presented. The systems discussed include s... | | 2014-01-01 |
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Poulter, Charles Dale | Predicting the functions and specificity of triterpenoid synthases: a mechanism-based multi-intermediate docking approach | Terpenoid synthases construct the carbon skeletons of tens of thousands of natural products. To predict functions and specificity of triterpenoid synthases, a mechanism-based, multi-intermediate docking approach is proposed. In addition to enzyme function prediction, other potential applications of ... | | 2014-01-01 |
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Morse, Michael David | Rotational analysis of the 30 1 band of the Ã6Σ+ ← X̃6Σ + system of CrCCH | The spectrum of chromium acetylide, CrCCH, has been investigated in the near-infrared region (10 500-14 500 cm−1) and an intense band system is observed. The 310 band of this system has been investigated at high resolution (0.025 cm−1) and this system is identified as the ˜A6 + ← ˜X6 + syste... | | 2014-01-01 |
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Poulter, Charles Dale | Tetartohedral twinning in IDI-2 from Thermus thermophilus: crystallization under anaerobic conditions | Type-2 isopentenyl diphosphate isomerase (IDI-2) is a key flavoprotein involved in the biosynthesis of isoprenoids. Since fully reduced flavin mononucleotide (FMNH2) is needed for activity, it was decided to crystallize the enzyme under anaerobic conditions in order to understand how this reduced co... | | 2014-01-01 |
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Armentrout, Peter B. | Theoretical investigation and reinterpretation of the decomposition of lithiated proline and N-Methyl Proline | Lithium cation complexes of proline (Pro) and N-methyl proline (NMP) have been collisionally activated with xenon in a guided ion beam tandem mass spectrometer (GIBMS). In addition to the loss of the intact ligand, Pro and NMP, we observed two prominent fragmentation pathways involving the loss of (... | | 2014-01-01 |
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Armentrout, Peter B. | Thermodynamics and mechanism of protonated cysteine decomposition: a guided ion beam and computational study | A quantitative molecular description of the decomposition of protonated cysteine, H+Cys, is provided by studying the kinetic energy dependence of threshold collision-induced dissociation (CID) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Primary dissociation channels are deamida... | | 2014-01-01 |