Výsledky vyhledávání - "Hakim Karoui"

Akademický článek

EPR Spectroscopy: A Powerful Tool to Analyze Supramolecular Host•Guest Complexes of Stable Radicals with Cucurbiturils

Autor: Fengbo Liu, Hakim Karoui, Antal Rockenbauer, Simin Liu, Olivier Ouari, David Bardelang

Publikováno v: Molecules, Vol 25, Iss 4, p 776 (2020)

Stable organic free radicals are increasingly studied compounds due to the multiple and unusual properties imparted by the single electron(s). However, being paramagnetic, classical methods such as NMR spectroscopy can hardly be used due to relaxatio

Externí odkaz: https://doaj.org/article/9417333ba44f4b46bd88f0e73fa69ef9

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Polyphenolic Boronates Inhibit Tumor Cell Proliferation: Potential Mitigators of Oxidants in the Tumor Microenvironment

Autor: Gang Cheng, Hakim Karoui, Micael Hardy, Balaraman Kalyanaraman

Publikováno v: Cancers
Volume 15
Issue 4
Pages: 1089
Cancers, 2023, 15 (4), pp.1089. ⟨10.3390/cancers15041089⟩

International audience; Boronate-based compounds have been used in brain cancer therapy, either as prodrugs or in combination with other modalities. Boronates containing pro-luminescent and fluorescent probes have been used in mouse models of cancer.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cf73b8026e2d097ebae3ca903c4c316

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Triple Stack of a Viologen Derivative in a CB[10] Pair

Autor: Olivier Ouari, Valérie Monnier, David Bardelang, Didier Gigmes, Simin Liu, Roselyne Rosas, Christophe Bucher, Laurence Charles, Hakim Karoui, Shagor Chowdhury, Anthony Kermagoret, Floris Chevallier, Fengbo Liu

Publikováno v: Organic Letters
Organic Letters, 2021, ⟨10.1021/acs.orglett.1c00773⟩
Organic Letters, American Chemical Society, 2021, ⟨10.1021/acs.orglett.1c00773⟩

International audience; A viologen–phenylene–imidazole (VPI) conjugate, previously shown to be singly complexed by CB[7] and doubly bound by CB[8], is herein shown to form antiparallel triple stacks in water with cucurbit[10]uril (CB[10]), pairwi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f665e95d113dd6bf8fb3e2a6dd41d10
https://doi.org/10.1021/acs.orglett.1c00773

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Guest Exchange by a Partial Energy Ratchet in Water

Autor: Xue Yang, Qian Cheng, Anthony Kermagoret, Olivier Ouari, Valérie Monnier, David Bardelang, Hakim Karoui, Ruibing Wang, Laurence Charles, Didier Gigmes

Publikováno v: Angewandte Chemie International Edition
Angewandte Chemie International Edition, 2021, 60 (12), pp.6617-6623. ⟨10.1002/anie.202014399⟩
Angewandte Chemie International Edition, Wiley-VCH Verlag, 2021, 60 (12), pp.6617-6623. ⟨10.1002/anie.202014399⟩
Angewandte Chemie

International audience; Molecular machines are ubiquitous in nature and function away from equilibrium by consuming fuels to produce appropriate work. Chemists have recently excelled at mimicking the fantastic job performed by natural molecular machi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3126cf7473a27ba95df5cab846e8608a
https://hal-amu.archives-ouvertes.fr/hal-03227446

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Open and Closed Radicals: Local Geometry around Unpaired Electrons Governs Magic-Angle Spinning Dynamic Nuclear Polarization Performance

Autor: Laura Esteban Hofer, Georges Menzildjian, Maxim Yulikov, Yu Rao, Lyndon Emsley, Olivier Ouari, Gilles Casano, Dominik J. Kubicki, Gabriele Stevanato, Moreno Lelli, Hakim Karoui, Manuel Cordova, Anne Lesage, Didier Siri, Gunnar Jeschke

Publikováno v: Journal of the American Chemical Society

The development of magic-angle spinning dynamic nuclear polarization (MAS DNP) has allowed atomic-level characterization of materials for which conventional solid-state NMR is impractical due to the lack of sensitivity. The rapid progress of MAS DNP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2752ea174e2b4893275c8c1ec6b46f9
https://pubmed.ncbi.nlm.nih.gov/32806886

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TinyPols: A family of water-soluble binitroxides tailored for dynamic nuclear polarization enhanced NMR spectroscopy at 18.8 and 21.1 T

Publikováno v: Chemical Science, 11 (10)
Chemical Science
Chemical Science, 2020, ⟨10.1039/c9sc05384k⟩
Chemical Science, The Royal Society of Chemistry, 2020, ⟨10.1039/c9sc05384k⟩

Dynamic Nuclear Polarization (DNP) has recently emerged as a key method to increase the sensitivity of solid-state NMR spectroscopy under Magic Angle Spinning (MAS). While efficient binitroxide polarizing agents such as AMUPol have been developed for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7df85e8da277971db230819b0e1b1e5
https://hdl.handle.net/20.500.11850/406428

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Embedding cyclic nitrone in mesoporous silica particles for EPR spin trapping of superoxide and other radicals

Autor: Olivier Ouari, Balaraman Kalyanaraman, Hakim Karoui, Micael Hardy, Stéphane Gastaldi, Jacek Zielonka, Monika Zielonka, Antal Rockenbauer, Emily Bloch, Selma Aslan, Eric Besson

Publikováno v: Analyst
Analyst, Royal Society of Chemistry, 2019, 144 (14), pp.4194-4203. ⟨10.1039/c9an00468h⟩
Analyst, 2019, 144 (14), pp.4194-4203. ⟨10.1039/c9an00468h⟩

The generation of superoxide radical anion in biological systems is one of the major initiating events in the redox biology of NADPH oxidases and mitochondrial redox signalling. However, the pallette of chemical tools for superoxide detection is very

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4baedd558f808508f0ba4dd55caa943
https://hal-amu.archives-ouvertes.fr/hal-02187288

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Triangular Regulation of Cucurbit[8]uril 1:1 Complexes

Autor: Hakim Karoui, Didier Siri, Roselyne Rosas, Laurence Charles, Antal Rockenbauer, Sylvain Clair, Mehmet Menaf Ayhan, Sébastien Combes, Alain Tonetto, Stéphane Viel, David Bardelang, Olivier Ouari, Ruibing Wang, Valérie Monnier, Khoa Truong Tran, Paul Tordo

Publikováno v: Journal of the American Chemical Society
Journal of the American Chemical Society, American Chemical Society, 2019, 141 (14), pp.5897-5907. ⟨10.1021/jacs.9b00150⟩
Journal of the American Chemical Society, 2019, 141 (14), pp.5897-5907. ⟨10.1021/jacs.9b00150⟩

International audience; Triangular shapes have inspired scientists over time and are common in nature, such as the flower petals ofoxalis triangularis, or the triangular faces of tetrahedrite crystals or on the icosahedron faces of virus capsids. Sup

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bb9990a8b07a4d7a9a2ebfbd951c613
https://hal-amu.archives-ouvertes.fr/hal-02355128

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Tailoring of Polarizing Agents in the bTurea Series for Cross-Effect Dynamic Nuclear Polarization in Aqueous Media

Autor: Antal Rockenbauer, Olivier Ouari, Claire Sauvée, Fabien Aussenac, Ralph T. Weber, Dimitry Akhmetzyanov, Melanie Rosay, Hakim Karoui, Didier Siri, Gilles Casano, Sébastien Abel, Thomas F. Prisner, Paul Tordo, Werner E. Maas

Publikováno v: Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2016, 22 (16), pp.5598-5606. ⟨10.1002/chem.201504693⟩
Chemistry-A European Journal, 2016, 22 (16), pp.5598-5606. ⟨10.1002/chem.201504693⟩

International audience; A series of 18 nitroxide biradicals derived from bTurea has been prepared, and their enhancement factors ɛ (1H) in cross-effect dynamic nuclear polarization (CE DNP) NMR experiments at 9.4 and 14.1 T and 100 K in a DNP-optimi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac65edf0090921ab39111e2f4ea51a8c
https://doi.org/10.1002/chem.201504693

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