Výsledky vyhledávání - "Patrice Jacques"

On the interaction of triarylmethane dye crystal violet with LAPONITE® clay: using mineral nanoparticles to control the dye photophysics

Autor: Jocelyne Brendle, Patrice Jacques, Ahmad Ibrahim, Xavier Allonas, Christian Ley, A. Walter

Publikováno v: Physical Chemistry Chemical Physics. 17:16677-16681

The combination of an organic dye with clays leads to very interesting hybrid materials with original properties. It is found that LAPONITE® nanoparticles have an impact on the photophysical properties of the crystal violet dye inducing a kinetic st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22f6ee23f954add9141cf489202faee2
https://doi.org/10.1039/c5cp02370j

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Solvent-tuned dual emission: a structural and electronic interplay highlighting a novel planar ICT (OPICT)

Autor: Patrice Jacques, S. Chevreux, Keitaro Nakatani, Gilles Lemercier, Clémence Allain, R. Paulino Neto, Ilaria Ciofini

Publikováno v: Physical Chemistry Chemical Physics. 17:7639-7642

Displaying a dual emission, a Phen-PENMe2 compound can be foreseen as a new model for fundamental studies. It is based on an excited state cumulene-type structure, involving orthogonal π orbital (OPICT). In contrast to the "Twisted Intramolecular Ch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d60ec38dc890b5d7b5d919a2fcc7baa
https://doi.org/10.1039/c4cp05661b

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Concerning restricted rotations in pyridinyl anisoles and pyridinyl phenols bearing saturated handles, and their solid state structures

Autor: Didier Le Nouen, Markus Neuburger, Emel Ay, Théophile Tschamber, Hélène Chaumeil, Patrice Jacques

Publikováno v: Tetrahedron Letters. 55:5979-5983

The variable-temperature («dynamic») NMR measurements of series of pyridinyl anisoles and pyridinyl phenols each of them bearing ortho, ortho′ handles of various lengths at oxygenated ring lead to the following results: (i) at room temperature, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35f7d3b2ac82b2fbadd59f45feaad796
https://doi.org/10.1016/j.tetlet.2014.09.002

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Synthesis and photophysical properties of 2,6-dicyano-p-phenylenediamine

Autor: Muhammad Zahid, Asim Mansha, Günter Grampp, Patrice Jacques, Arnulf Rosspeintner, Gonzalo Angulo

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 220:54-63

The photophysical and electrochemical properties of p-phenylenediamine (PPD) are strongly affected by the addition of cyano groups to the aromatic ring. In 2,3,5,6-tetracyano-p-phenylenediamine (TCPPD) the photophysics is governed mostly by the solve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78c589ae4fc2b986f8fb2fe7251f8e53
https://doi.org/10.1016/j.jphotochem.2011.03.018

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Spectroscopic characteristics of a novel highly fluorescent p-phenylenediamine: Tetracyano-p-phenylenediamine

Autor: Arnulf Rosspeintner, Jakob Grilj, Patrice Jacques, Günter Grampp, Stephan Landgraf, Gonzalo Angulo

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 199:204-210

We present here some of the physicochemical properties of tetracyano-p-phenylenediamine (TCPPD). This is the second highly fluorescent p-phenylenediamine (PPD) presented in the literature. The molecule emits with a very long lifetime (20 ns) and an o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b747a64c43cd8a3c09eec288ad63863
https://doi.org/10.1016/j.jphotochem.2008.05.017

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Excited state proton transfer in a ‘super’ photoacid based on a phenol–pyridinium biaryl chromophore

Autor: Fabrice Morlet Savary, Christiane Carre, Xavier Allonas, J.-Pierre Malval, Vincent Diemer, Hélène Chaumeil, Albert Defoin, Patrice Jacques

Publikováno v: Chemical Physics Letters. 455:238-241

We report the effect of a N-methylpyridinium substituent on the photoacidity enhancement of a phenol derivative. The steady-state and time-resolved fluorescence of this new phenolic ‘super’ photoacid (HPPy) are measured in different solvents in c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::859c5cb457e794e367ce021375c68370
https://doi.org/10.1016/j.cplett.2008.02.099

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Solvent tuned single molecule dual emission in protic solvents: effect of polarity and H-bonding

Autor: Clémence Allain, S. Chevreux, Keitaro Nakatani, Patrice Jacques, Liam Wilbraham, Gilles Lemercier, Ilaria Ciofini

Publikováno v: Faraday discussions. 185

Phen-PENMe2 has recently been proposed as a promising new molecule displaying solvent-tuned dual emission, highlighting an original and newly-described charge transfer model. The study of the photophysical behaviour of this molecule was extended to i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7e19a7c67c0d92075398c7b56b5bac4
https://pubmed.ncbi.nlm.nih.gov/26411633

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Joint spectroscopic and theoretical investigation of cationic cyanine dye Astrazon Orange-R: solvent viscosity controlled relaxation of excited states

Autor: Christian Ley, Patrice Bordat, Lola Remongin, Patrice Jacques, Xavier Allonas, Ahmad Ibrahim, Luciano H. di Stefano

Publikováno v: Physical Chemistry Chemical Physics
Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2015, 17 (8), pp.5982--5990. ⟨10.1039/c4cp05103c⟩

International audience; In this paper, the first study of cationic cyanine dye Astrazon Orange-R by combined spectroscopic and theoretical investigation is presented. It is shown that molecular modeling of Astrazon Orange-R is in very good agreement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d39c91904290fdf8aa1039704ef439c9
https://pubmed.ncbi.nlm.nih.gov/25642470

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A butterfly like motion as a clue to the photophysics of thioxanthone

Autor: Luis Serrano-Andrés, D. Burget, Patrice Jacques, Oscar Rubio-Pons

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 179:298-304

A theoretical, quantum-chemical study of the thioxanthone (TX) molecule has been performed at the MP2 and CASPT2 levels of theory. Geometries, absorption energies, and transition and state properties have been investigated. Two conformers have been f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d4e7dffaeac21178f41adb7f488968f
https://doi.org/10.1016/j.jphotochem.2005.08.033

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