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Showing 1 to 9 of 9 entries
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Ambient Stable Radical Cations, Diradicaloid π-Dimeric Dications, Closed-Shell Dications, and Diradical Dications of Methylthio-Capped Rylenes.

Chemistry (Weinheim an der Bergstrasse, Germany)

Qi Q, Burrezo PM, Phan H, Herng TS, Gopalakrishna TY, Zeng W, Ding J, Casado J, Wu J.
PMID: 28382693
Chemistry. 2017 Jun 01;23(31):7595-7606. doi: 10.1002/chem.201701102. Epub 2017 May 17.

Radical cations and dications of π-conjugated systems play vital roles in organic electronic devices, organic conductors, and conducting polymers. Their structures, charge and spin distribution, and mechanism of charge transport are of great interest. In this article, radical cations...

Push-Pull Type Oligo(N-annulated perylene)quinodimethanes: Chain Length and Solvent-Dependent Ground States and Physical Properties.

Journal of the American Chemical Society

Zeng Z, Lee S, Son M, Fukuda K, Burrezo PM, Zhu X, Qi Q, Li RW, Navarrete JT, Ding J, Casado J, Nakano M, Kim D, Wu J.
PMID: 26062868
J Am Chem Soc. 2015 Jul 08;137(26):8572-83. doi: 10.1021/jacs.5b04156. Epub 2015 Jun 25.

Research on stable open-shell singlet diradicaloids recently became a hot topic because of their unique optical, electronic, and magnetic properties and promising applications in materials science. So far, most reported singlet diradicaloid molecules have a symmetric structure, while asymmetric...

Fully Fused Quinoidal/Aromatic Carbazole Macrocycles with Poly-radical Characters.

Journal of the American Chemical Society

Das S, Herng TS, Zafra JL, Burrezo PM, Kitano M, Ishida M, Gopalakrishna TY, Hu P, Osuka A, Casado J, Ding J, Casanova D, Wu J.
PMID: 27248181
J Am Chem Soc. 2016 Jun 22;138(24):7782-90. doi: 10.1021/jacs.6b04539. Epub 2016 Jun 10.

While the chemistry of open-shell singlet diradicaloids has been successfully developed in recent years, the synthesis of π-conjugated systems with poly-radical characters (i.e., beyond diradical) in the singlet ground state has been mostly unsuccessful. In this study, we report...

Planarization, fusion, and strain of carbon-bridged phenylenevinylene oligomers enhance π-electron and charge conjugation: a dissectional vibrational Raman study.

Journal of the American Chemical Society

Burrezo PM, Zhu X, Zhu SF, Yan Q, López Navarrete JT, Tsuji H, Nakamura E, Casado J.
PMID: 25730496
J Am Chem Soc. 2015 Mar 25;137(11):3834-43. doi: 10.1021/ja5125463. Epub 2015 Mar 10.

We have used Raman spectroscopy to study the molecular and electronic structures of the radical cations and dications of carbon-bridged oligo(para-phenylenevinylene)s (COPVn, n = 1-6) possessing consecutive fused pentagons and hexagons, up to 19, along with COPV derivatives having...

Operative Mechanism of Hole-Assisted Negative Charge Motion in Ground States of Radical-Anion Molecular Wires.

Journal of the American Chemical Society

Franco C, Burrezo PM, Lloveras V, Caballero R, Alcón I, Bromley ST, Mas-Torrent M, Langa F, López Navarrete JT, Rovira C, Casado J, Veciana J.
PMID: 27997166
J Am Chem Soc. 2017 Jan 18;139(2):686-692. doi: 10.1021/jacs.6b08649. Epub 2017 Jan 06.

Charge transfer/transport in molecular wires over varying distances is a subject of great interest. The feasible transport mechanisms have been generally accounted for on the basis of tunneling or superexchange charge transfer operating over small distances which progressively gives...

A public health approach to pediatric residency education: responding to social determinants of health.

Journal of graduate medical education

Kuo AA, Shetgiri R, Guerrero AD, Barreto PM, Perez VH, Fond K, Slusser W.
PMID: 22655145
J Grad Med Educ. 2011 Jun;3(2):217-23. doi: 10.4300/JGME-D-10-00150.1.

OBJECTIVE: To evaluate the impact of a public health approach to pediatric residency education on learner knowledge, skills, attitudes, beliefs, and career choice.BACKGROUND: Incorporating public health principles into traditional residency education can give pediatricians the population-oriented perspective to address...

Quinoidal/Aromatic Transformations in π-Conjugated Oligomers: Vibrational Raman studies on the Limits of Rupture for π-Bonds.

Angewandte Chemie (International ed. in English)

Burrezo PM, Zafra JL, López Navarrete JT, Casado J.
PMID: 27862823
Angew Chem Int Ed Engl. 2017 Feb 20;56(9):2250-2259. doi: 10.1002/anie.201605893. Epub 2017 Feb 03.

The vibrational Raman spectra of several series of aromatic and quinoidal compounds have been analyzed considering the downshifts and upshifts of the frequencies of the relevant Raman bands as a function of the number of repeating units. Oligothiophenes, oligophenylene-vinylenes,...

High-Pressure Chemistry and the Mechanochemical Polymerization of [5]-Cyclo-p-phenylene.

Chemistry (Weinheim an der Bergstrasse, Germany)

Qiu L, Peña-Alvarez M, Taravillo M, Evans PJ, Darzi ER, Jasti R, Burrezo PM, López Navarrete JT, Baonza VG, Casado J, Kertesz M.
PMID: 28898486
Chemistry. 2017 Nov 21;23(65):16593-16604. doi: 10.1002/chem.201703435. Epub 2017 Oct 30.

Evidence for the surprising formation of polymeric phases under high pressure for conjugated nanohoop molecules was found. This paper represents one of the unique cases, in which the molecular-level effects of pressure in crystalline organic solids is addressed, and...

Bis(aminoaryl) Carbon-Bridged Oligo(phenylenevinylene)s Expand the Limits of Electronic Couplings.

Angewandte Chemie (International ed. in English)

Burrezo PM, Lin NT, Nakabayashi K, Ohkoshi SI, Calzado EM, Boj PG, Díaz García MA, Franco C, Rovira C, Veciana J, Moos M, Lambert C, López Navarrete JT, Tsuji H, Nakamura E, Casado J.
PMID: 28140501
Angew Chem Int Ed Engl. 2017 Mar 06;56(11):2898-2902. doi: 10.1002/anie.201610921. Epub 2017 Jan 31.

Carbon-bridged bis(aminoaryl) oligo(para-phenylenevinylene)s have been prepared and their optical, electrochemical, and structural properties analyzed. Their radical cations are class III and class II mixed-valence systems, depending on the molecular size, and they show electronic couplings which are among the...

Showing 1 to 9 of 9 entries