Search Results - "Urbina, Andres S."

Hiding in the Crowd: Spectral Signatures of Overcoordinated Hydrogen-Bond Environments by Morawietz, Tobias, Urbina, Andres S, Wise, Patrick K, Wu, Xiangen, Lu, Wanjun, Ben-Amotz, Dor, Markland, Thomas E

“…Molecules with an excess number of hydrogen-bonding partners play a crucial role in fundamental chemical processes, ranging from anomalous diffusion in…”
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Capturing CO2 in Quadrupolar Binding Pockets: Broadband Microwave Spectroscopy of Pyrimidine-(CO2) n , n = 1,2 by Welsh, Blair A., Urbina, Andres S., Ho, Tuan A., Rempe, Susan L., Slipchenko, Lyudmila V., Zwier, Timothy S.

“…Pyrimidine has two in-plane CH­(δ+)/N̈(δ−)/CH­(δ+) binding sites that are complementary to the (δ−/2δ+/δ−) quadrupole moment of CO2. We recorded broadband…”
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Quantifying the Nearly Random Microheterogeneity of Aqueous tert-Butyl Alcohol Solutions Using Vibrational Spectroscopy by Urbina, Andres S., Slipchenko, Lyudmila V., Ben-Amotz, Dor

“…The microheterogeneous structure of aqueous tert-butyl alcohol (TBA) solutions is quantified by combining experimental, simulations, and theoretical results…”
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Influence of H, OH and salts on hydrophobic self-assembly by Judd, Kenneth D, Mendes de Oliveira, Denilson, Urbina, Andres S, Ben-Amotz, Dor

“…In spite of the ubiquity of acid/base ions and salts in biological systems, their influence on hydrophobic self-assembly remains an open question. Here we use…”
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Capturing CO 2 in Quadrupolar Binding Pockets: Broadband Microwave Spectroscopy of Pyrimidine-(CO 2 ) n , n = 1,2 by Welsh, Blair A, Urbina, Andres S, Ho, Tuan A, Rempe, Susan L, Slipchenko, Lyudmila V, Zwier, Timothy S

“…Pyrimidine has two in-plane CH(δ+)/ (δ-)/CH(δ+) binding sites that are complementary to the (δ-/2δ+/δ-) quadrupole moment of CO . We recorded broadband…”
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Hydration and Seamless Integration of Hydrogen Peroxide in Water by Bredt, Aria J, Mendes de Oliveira, Denilson, Urbina, Andres S, Slipchenko, Lyudmila V, Ben-Amotz, Dor

“…Raman multivariate curve resolution is used to decompose the vibrational spectra of aqueous hydrogen peroxide (H2O2) into pure water, dilute H2O2, and…”
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Binding-Induced Unfolding of 1‑Bromopropane in α‑Cyclodextrin by Urbina, Andres S, Boulos, Victoria M, Zeller, Matthias, Mendes de Oliveira, Denilson, Ben-Amotz, Dor

“…Raman multivariate curve resolution vibrational spectroscopy and X-ray crystallography are used to quantify changes in the gauche–trans conformational…”
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Expulsion of Hydroxide Ions from Methyl Hydration Shells by Bredt, Aria J, Kim, Yongbin, Mendes de Oliveira, Denilson, Urbina, Andres S, Slipchenko, Lyudmila V, Ben-Amotz, Dor

“…The affinity of hydroxide ions for methyl hydration shells is assessed using a combined experimental and theoretical analysis of tert-butyl alcohol (TBA)…”
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Lead and cadmium levels in Galapagos Penguin Spheniscus mendiculus, Flightless Cormorant Phalacrocorax harrisi, and Waved Albatross Phoebastria irrorata by Jiménez-Uzcátegui, Gustavo, Vinueza, Rommel L, Urbina, Andrés S, Egas, David A, García, Carolina, Cotín, Javier, Sevilla, Christian

“…Heavy metals are a threat to wildlife, and they have yet to be analyzed in seabirds from the Galápagos Archipelago. To gauge their prevalence in Galápagos…”
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Experimental and Computational Studies of Hydrophobic Association and Ion Affinity for Molecular Oil/Water Interfaces by Urbina, Andres S

“…Experimental and computational techniques are used to study physico-chemical phenomena occurring in water on which hydrophobic interactions play a role. In…”
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Insights on the aromaticity of imidazolylidene carbenes by means of DFT calculations by Urbina, Andres S., Zambrano, Cesar H., Torres, F. Javier, Rincon, Luis

“…[Display omitted] •The stability of 16 imidazolylidene carbenes was studied using five aromatic descriptors.•A relation between the carbene singlet–triplet gap…”
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Hiding in the crowd: Spectral signatures of overcoordinated hydrogen bond environments by Morawietz, Tobias, Urbina, Andres S, Wise, Patrick K, Wu, Xiangen, Lu, Wanjun, Ben-Amotz, Dor, Markland, Thomas E

“…Molecules with an excess number of hydrogen-bonding partners play a crucial role in fundamental chemical processes, ranging from the anomalous diffusion in…”
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Computational study B3LYP interaction of molecular hydrogen [H2] with rccc R-Pyg [4]arenes [R = methyl, fluoride] functionalized with Li by Andrés S. Urbina, Andrea A. Saltos, Fernando Javier Torres

“…The interaction of molecular hydrogen [H2] with methyl- and fluoride-substituted rccc pirogallol[4]arenes functionalized with Li+ cations [Li-R-Pyg[4]Ar] was…”
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