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Showing 1 to 12 of 147 entries
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The o-xylylene protecting group as an element of conformational control of remote stereochemistry in the synthesis of spiroketals.

Chemical communications (Cambridge, England)

Balbuena P, Rubio EM, Ortiz Mellet C, García Fernández JM.
PMID: 16779494
Chem Commun (Camb). 2006 Jun 28;(24):2610-2. doi: 10.1039/b604718a. Epub 2006 May 10.

Protection of trans-1,2-diol segments as cyclic o-xylylene ethers strongly favours diequatorial over diaxial dispositions; the possibility of using this grouping for remote control of the stereochemistry in the synthesis of spiroketals is here demonstrated by the stereoselective synthesis of...

Surface segregation and stability of core-shell alloy catalysts for oxygen reduction in acid medium.

Physical chemistry chemical physics : PCCP

Ramírez-Caballero GE, Ma Y, Callejas-Tovar R, Balbuena PB.
PMID: 20165770
Phys Chem Chem Phys. 2010 Mar 07;12(9):2209-18. doi: 10.1039/b917899f. Epub 2010 Jan 18.

Density functional theory is used for the evaluation of surface segregation, trends for dissolution of Pt surface atoms in acid medium, and oxygen reduction reaction activity of core-shell materials, containing a monolayer of platinum over a monometallic or bimetallic...

Nanotube nucleation versus carbon-catalyst adhesion--probed by molecular dynamics simulations.

The Journal of chemical physics

Ribas MA, Ding F, Balbuena PB, Yakobson BI.
PMID: 20001051
J Chem Phys. 2009 Dec 14;131(22):224501. doi: 10.1063/1.3266947.

Catalytic nucleation of carbon nanotubes (CNTs) remains a challenge for the theory: Which factors and forces decide if the gathering sp(2)-network of atoms will adhere to the catalyst particle and fully cover it or the graphitic cap will liberate...

Shell-anchor-core structures for enhanced stability and catalytic oxygen reduction activity.

The Journal of chemical physics

Ramirez-Caballero GE, Hirunsit P, Balbuena PB.
PMID: 20942553
J Chem Phys. 2010 Oct 07;133(13):134705. doi: 10.1063/1.3481482.

Density functional theory is used to evaluate activity and stability properties of shell-anchor-core structures. The structures consist of a Pt surface monolayer and a composite core having an anchor bilayer where C atoms in the interstitial sites lock 3d...

Structural and reactivity properties of finite length cap-ended single-wall carbon nanotubes.

The journal of physical chemistry. A

Zhao J, Balbuena PB.
PMID: 16494388
J Phys Chem A. 2006 Mar 02;110(8):2771-5. doi: 10.1021/jp0570418.

The reaction of C2 with growing single-wall carbon nanotubes of different chiralities is investigated using density functional theory. It is found that the energy of the frontier orbitals for (5,5) and (6,6) armchair carbon nanotubes exhibits periodic behavior with...

Local surface structure effect on reactivity of molecules confined between metallic surfaces.

Physical chemistry chemical physics : PCCP

Martínez de la Hoz JM, Balbuena PB.
PMID: 23247727
Phys Chem Chem Phys. 2013 Feb 07;15(5):1647-54. doi: 10.1039/c2cp43517a.

Interactions between metallic surfaces separated by nanometer distances create an unusual reactivity environment. Here we evaluate the effect of the geometry given by differences in the structures of the interacting surfaces and by the presence of steps. Adsorption of...

The role of cap chirality in the mechanism of growth of single-wall carbon nanotubes.

Nanotechnology

Gómez-Gualdrón DA, Balbuena PB.
PMID: 21836305
Nanotechnology. 2008 Dec 03;19(48):485604. doi: 10.1088/0957-4484/19/48/485604. Epub 2008 Nov 12.

Addition of C(2) radicals to rim sites of carbon nanotube caps with different chiral angles and its relation to the catalyzed growth of single-wall carbon nanotubes are investigated using density functional theory. It is shown that the structure of...

A versatile metal-organic framework for carbon dioxide capture and cooperative catalysis.

Chemical communications (Cambridge, England)

Park J, Li JR, Chen YP, Yu J, Yakovenko AA, Wang ZU, Sun LB, Balbuena PB, Zhou HC.
PMID: 22935998
Chem Commun (Camb). 2012 Oct 14;48(80):9995-7. doi: 10.1039/c2cc34622b.

A multi-functional MOF was constructed from Cu paddlewheel motifs and a judiciously designed novel ligand bearing carboxylate, pyridine, and amide groups. exhibits selective adsorption of CO(2) over CH(4) and excellent catalytic activity in a tandem one-pot deacetalization-Knoevenagel condensation reaction...

Guidance of Navigating Honeybees by Learned Elongated Ground Structures.

Frontiers in behavioral neuroscience

Menzel R, Tison L, Fischer-Nakai J, Cheeseman J, Balbuena MS, Chen X, Landgraf T, Petrasch J, Polster J, Greggers U.
PMID: 30697152
Front Behav Neurosci. 2019 Jan 15;12:322. doi: 10.3389/fnbeh.2018.00322. eCollection 2018.

Elongated landscape features like forest edges, rivers, roads or boundaries of fields are particularly salient landmarks for navigating animals. Here, we ask how honeybees learn such structures and how they are used during their homing flights after being released...

Preliminary study: Factor structure and psychometric properties of Affective Lability Scale-18 in pregnant and postpartum women.

Journal of affective disorders

Li H, Bowen A, Bowen R, Balbuena L, Baetz M, Feng C, Muhajarine N, Bally J.
PMID: 30419531
J Affect Disord. 2019 Feb 15;245:312-320. doi: 10.1016/j.jad.2018.11.066. Epub 2018 Nov 05.

No abstract available.

Explaining the singlet complexes detected for the reaction Zr(.

Journal of molecular modeling

Avilés A, Torres AE, Balbuena PB, Colmenares F.
PMID: 29247289
J Mol Model. 2017 Dec 15;24(1):12. doi: 10.1007/s00894-017-3562-y.

Energy profiles for the lowest lying triplet and singlet electronic pathways that link the reactants Zr + CH

Suicidality in People With Obsessive-Compulsive Symptoms or Personality Traits.

Frontiers in psychiatry

Bowen R, Rahman H, Dong LY, Khalaj S, Baetz M, Peters E, Balbuena L.
PMID: 30692943
Front Psychiatry. 2019 Jan 14;9:747. doi: 10.3389/fpsyt.2018.00747. eCollection 2018.

No abstract available.

Showing 1 to 12 of 147 entries