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9 results on '"Boudreault, Pierre-Luc T."'

2. Encapsulated-type iridium(III) phosphorescent emitters with a hexadentate ligand of three different bidentate units

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Gobierno de Aragón, Benavent, Llorenç, Boudreault, Pierre-Luc T., Esteruelas, Miguel A., López, Ana M., Oñate, Enrique, Tsai, Jui-Yi, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Gobierno de Aragón, Benavent, Llorenç, Boudreault, Pierre-Luc T., Esteruelas, Miguel A., López, Ana M., Oñate, Enrique, and Tsai, Jui-Yi

Abstract

The preparation and photophysical properties of new phosphorescent iridium(III) emitters are reported. The metal center is encapsulated by a hexadentate ligand made up of three different bidentate fragments: orthometalated 2-phenylpyridine, orthometalated 2-benzylpyridine, and metalated 2-ethylpyridine. Their formation involves activation reactions of C(sp2)–H and C(sp3)–H bonds assisted by pyridyl groups.

Published
2023

4. Supporting Information - Two synthetic tools to deepen the understanding of the influence of stereochemistry on the properties of Iridium(III) heteroleptic emitters

Author

Babón, Juan C., Boudreault, Pierre-Luc T., Esteruelas, Miguel A., Gaona, Miguel A., Izquierdo, Susana, Oliván, Montserrat, Oñate, Enrique, Tsai, Jui-Yi, Vélez, Andrea, Babón, Juan C., Boudreault, Pierre-Luc T., Esteruelas, Miguel A., Gaona, Miguel A., Izquierdo, Susana, Oliván, Montserrat, Oñate, Enrique, Tsai, Jui-Yi, and Vélez, Andrea

Published
2023

8. Optical and photophysical properties of indolocarbazole derivatives

Author

Belletete, Michel, Blouin, Nicolas, Boudreault, Pierre-Luc T., Leclerc, Mario, and Durocher, Gilles

Subjects
Indole -- Optical properties, Indole -- Chemical properties, Azo compounds -- Chemical properties, Azo compounds -- Optical properties, Chemicals, plastics and rubber industries
Abstract

The optical and physical properties of five ladder indolo[3,2-b]carbazoles, M1,M2,M3, M4 and M5 were studied. It was found that the side chains were twisted in the equilibrium geometry of the molecules, with relatively high rotational energy barriers against planarity and in their lowest states, the five compounds investigated become more quinoid like.

Published
2006

9. Pyridyl-directed C-H and C-Br bond activations promoted by dimer iridium-olefin complexes

Author

Boudreault Pierre Luc T, Enrique Oñate, Miguel A. Esteruelas, Jui Yi Tsai, Erik Mora, Diputación General de Aragón, Ministerio de Economía y Competitividad (España), and European Commission

Subjects
Olefin fiber, 010405 organic chemistry, Dimer, Acetylacetone, Organic Chemistry, Substituent, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, Toluene, 0104 chemical sciences, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Cyclooctene, Pyridine, Iridium, Physical and Theoretical Chemistry
Abstract

Complexes [Ir(μ-Cl)(η2-C8H14)2]2 (1) and [Ir(μ-Cl)(η4-C8H12)]2 (2) promote the pyridyl-directed ortho-CH and ortho-CBr activations of the phenyl substituent of 2-(2-bromophenyl)pyridine. The formed products depend upon the olefin of the dimer, which governs the kinetic preference of the activation. The cyclooctene complex 1 reacts with the substituted heterocycle to give (η2-C8H14)2Ir(μ-Cl)2Ir{κ2-C,N-[C6BrH3-py]}2 (3), in acetone, at room temperature. Treatment of 3 with K(acac) affords Ir(acac)(η2-C8H14)2 (4) and Ir(acac){κ2-C,N-[C6BrH3-py]}2 (5; acac = acetylacetone). Under more severe conditions, 2-ethoxyethanol under reflux, the reaction of 1 with the heterocycle gives a yellow solid, which yields a 5:82:7 mixture of 5, Ir(acac){κ2-C,N-[C6BrH3-py]}{κ2-C,N-[C6H4-py]} (6), and Ir(acac){κ2-C,N-[C6H4-py]}2 (7) by reaction with K(acac). In acetone or toluene, at room temperature, 2-(2-bromophenyl)pyridine breaks the chloride bridges of dimer 2 to form IrCl(η4-C8H12){κ1-N-[py-C6BrH4]} (8), which evolves into IrClBr{κ2-C,N-[C6H4-py]}(η4-C8H12) (9) as a result of the oxidative addition of the ortho-CBr of the phenyl substituent to the metal center. Treatment of 9 with Ag2O in acetylacetone leads to Ir(acac){κ2-C,N-[C6H4-py]}{κ1-C, η2-[C8H12-(C3-acac)]} (10), as a consequence of the replacement of the halides by an O,O-chelate acac ligand and the outside to metal nucleophilic attack of a second acac group to the diene C–C double bond disposed trans to bromide., Financial support from the MINECO of Spain (Projects CTQ2017-82935-P and Red de Excelencia Consolider CTQ2016-81797-REDC), the Diputación General de Aragón (E06_17R), FEDER, and the European Social Fund is acknowledged.

Published
2018

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