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Leclerc M, Beaupré S. Driving organic electronics to new heights. Nat Mater 2024; 23:589-590. [PMID: 38702541 DOI: 10.1038/s41563-024-01863-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Affiliation(s)
- Mario Leclerc
- Department of Chemistry, Université Laval, Quebec City, Quebec, Canada.
| | - Serge Beaupré
- Department of Chemistry, Université Laval, Quebec City, Quebec, Canada
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2
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Reveret L, Leclerc M, Morin F, Émond V, Calon F. Pharmacokinetics, biodistribution and toxicology of novel cell-penetrating peptides. Sci Rep 2023; 13:11081. [PMID: 37422520 PMCID: PMC10329699 DOI: 10.1038/s41598-023-37280-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 06/19/2023] [Indexed: 07/10/2023] Open
Abstract
Cell-penetrating peptides (CPPs) have been used in basic and preclinical research in the past 30 years to facilitate drug delivery into target cells. However, translation toward the clinic has not been successful so far. Here, we studied the pharmacokinetic (PK) and biodistribution profiles of Shuttle cell-penetrating peptides (S-CPP) in rodents, combined or not with an immunoglobulin G (IgG) cargo. We compared two enantiomers of S-CPP that contain both a protein transduction domain and an endosomal escape domain, with previously shown capacity for cytoplasmic delivery. The plasma concentration versus time curve of both radiolabelled S-CPPs required a two-compartment PK analytical model, which showed a fast distribution phase (t1/2α ranging from 1.25 to 3 min) followed by a slower elimination phase (t1/2β ranging from 5 to 15 h) after intravenous injection. Cargo IgG combined to S-CPPs displayed longer elimination half-life, of up to 25 h. The fast decrease in plasma concentration of S-CPPs was associated with an accumulation in target organs assessed at 1 and 5 h post-injection, particularly in the liver. In addition, in situ cerebral perfusion (ISCP) of L-S-CPP yielded a brain uptake coefficient of 7.2 ± 1.1 µl g-1 s-1, consistent with penetration across the blood-brain barrier (BBB), without damaging its integrity in vivo. No sign of peripheral toxicity was detected either by examining hematologic and biochemical blood parameters, or by measuring cytokine levels in plasma. In conclusion, S-CPPs are promising non-toxic transport vectors for improved tissue distribution of drug cargos in vivo.
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Affiliation(s)
- L Reveret
- Faculty of Pharmacy, Université Laval, Quebec City, QC, Canada
- Neurosciences Axis, CHU de Québec-Université Laval Research Center, 2705, Boulevard Laurier, Room T2-67, Quebec City, QC, G1V 4G2, Canada
| | - M Leclerc
- Faculty of Pharmacy, Université Laval, Quebec City, QC, Canada
- Neurosciences Axis, CHU de Québec-Université Laval Research Center, 2705, Boulevard Laurier, Room T2-67, Quebec City, QC, G1V 4G2, Canada
| | - F Morin
- Neurosciences Axis, CHU de Québec-Université Laval Research Center, 2705, Boulevard Laurier, Room T2-67, Quebec City, QC, G1V 4G2, Canada
| | - V Émond
- Neurosciences Axis, CHU de Québec-Université Laval Research Center, 2705, Boulevard Laurier, Room T2-67, Quebec City, QC, G1V 4G2, Canada
| | - F Calon
- Faculty of Pharmacy, Université Laval, Quebec City, QC, Canada.
- Neurosciences Axis, CHU de Québec-Université Laval Research Center, 2705, Boulevard Laurier, Room T2-67, Quebec City, QC, G1V 4G2, Canada.
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3
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Abstract
Direct (hetero)arylation polymerization (DHAP) shows great promise for simple, low cost, and benign preparation of conjugated polymers. However, coupling selectivity has always posed a problem. Herein, direct (hetero)arylation was studied on small molecule models to develop suitable conditions for C-C couplings between 2-methylthiophene acting as an electron-donating moiety and 2-thiophenecarbonitrile acting as an electron-withdrawing moiety, when one of the partners is brominated. We observed that the best conditions are obtained when the electron-withdrawing moiety is halogenated.
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Affiliation(s)
| | - Samuel Brassard
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - Mario Leclerc
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
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4
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Brassard S, Sangachin MH, Leclerc M. Toward Defect Suppression in Polythiophenes Synthesized by Direct (Hetero)Arylation Polymerization. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Samuel Brassard
- Département de Chimie, Université Laval, Quebec City G1V 0A6, Quebec, Canada
| | | | - Mario Leclerc
- Département de Chimie, Université Laval, Quebec City G1V 0A6, Quebec, Canada
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5
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Chamelot G, Idir M, Leclerc M, Morin JF. Synthesis and Properties of 2,6-Azulene-Based Conjugated Polymers and their Applications in Dispersing Single-Walled Carbon Nanotubes. Polym Chem 2023. [DOI: 10.1039/d2py01567f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Azulene-based conjugated polymers exhibit unique features that can be exploited in several applications, including energy storage, coatings, sensors and printed electronics. The position by which the azulene is linked to...
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6
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Boivin L, Dupont W, Gendron D, Leclerc M. Biosourced Monomers: Toward Sustainable Conjugated Polymers for Organic Electronics. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Louis‐Philippe Boivin
- Department of Chemistry Université Laval 1045 Av. de la Médecine Québec QC G1V 0A6 Canada
| | - William Dupont
- Department of Chemistry Université Laval 1045 Av. de la Médecine Québec QC G1V 0A6 Canada
| | - David Gendron
- Kemitek Cégep de Thetford 835 Rue Mooney O Thetford Mines QC G6G 0A5 Canada
| | - Mario Leclerc
- Department of Chemistry Université Laval 1045 Av. de la Médecine Québec QC G1V 0A6 Canada
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7
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Saint‐Béat B, Darnis G, Leclerc M, Babin M, Maps F. Same mesozooplankton functional groups, different functions in three Arctic marine ecosystems. Funct Ecol 2022. [DOI: 10.1111/1365-2435.14179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B. Saint‐Béat
- IFREMER, Dyneco Pelagos BP Plouzané France
- Takuvik Joint International Laboratory Université Laval (Canada) – CNRS (France), Département de biologie et Québec‐Océan, Université Laval, Quebec CA France
| | - G. Darnis
- Québec‐Océan, Département de biologie Université Laval Québec Canada
| | - M. Leclerc
- Takuvik Joint International Laboratory Université Laval (Canada) – CNRS (France), Département de biologie et Québec‐Océan, Université Laval, Quebec CA France
| | - M. Babin
- Takuvik Joint International Laboratory Université Laval (Canada) – CNRS (France), Département de biologie et Québec‐Océan, Université Laval, Quebec CA France
| | - F. Maps
- Takuvik Joint International Laboratory Université Laval (Canada) – CNRS (France), Département de biologie et Québec‐Océan, Université Laval, Quebec CA France
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Abstract
Forest biomass is viewed as a significant source of organic carbon and thus the ideal replacement of petroleum products. From the resources derived from biomass, lignocellulose is the most abundant biobased material on earth. One of the aromatic added value compounds obtained from the depolymerization of lignin is vanillin. Here, we report the preparation of new compounds having benzothiophene, indole, isatin, benzofuroxan, benzofurazan, benzothiadiazole, and phthalimide heteroaromatic ring structures. More precisely, our results show that vanillin can be used as a biosourced starting material for the preparation of a variety of aromatic dibrominated monomers. X-ray crystallography on single crystals was also performed to obtain meaningful information on their solid-state ordering. This work opens the way to new, sustainable, biosourced aromatic materials (small molecules or polymers) for organic electronics.
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Affiliation(s)
| | - William Dupont
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - Mario Leclerc
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - David Gendron
- Cégep de Thetford, Kemitek, Thetford Mines G6G 0A5, Canada
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9
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Millera Ferriz L, Ponton DE, Storck V, Leclerc M, Bilodeau F, Walsh DA, Amyot M. Role of organic matter and microbial communities in mercury retention and methylation in sediments near run-of-river hydroelectric dams. Sci Total Environ 2021; 774:145686. [PMID: 33609815 DOI: 10.1016/j.scitotenv.2021.145686] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/08/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Run-of-river power plants (RoRs) are expected to triple in number over the next decades in Canada. These structures are not anticipated to considerably promote the mobilization and transport of mercury (Hg) and its subsequent microbial transformation to methylmercury (MeHg), a neurotoxin able to biomagnify in food webs up to humans. To test whether construction of RoRs had an effect on Hg transport and transformation, we studied Hg and MeHg concentrations, organic matter contents and methylating microbial community abundance and composition in the sediments of a section of the St. Maurice River (Quebec, Canada). This river section has been affected by the construction of two RoR dams and its watershed has been disturbed by a forest fire, logging, and the construction of wetlands. Higher total Hg (THg) and MeHg concentrations were observed in the surface sediments of the flooded sites upstream of the RoRs. These peaks in THg and MeHg were correlated with organic matter proportions in the sediments (r2 = 0.87 and 0.82, respectively). In contrast, the proportion of MeHg, a proxy for methylation potential, was best explained by the carbon to nitrogen ratio suggesting the importance of terrigenous organic matter as labile substrate for Hg methylation in this system. Metagenomic analysis of Hg-methylating communities based on the hgcA functional gene marker indicated an abundance of methanogens, sulfate reducers and fermenters, suggesting that these metabolic guilds may be primary Hg methylators in these surface sediments. We propose that RoR pondages act as traps for sediments, organic matter and Hg, and that this retention can be amplified by other disturbances of the watershed such as forest fire and logging. RoR flooded sites can be conducive to Hg methylation in sediments and may act as gateways for bioaccumulation and biomagnification of MeHg along food webs, particularly in disturbed watersheds.
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Affiliation(s)
- L Millera Ferriz
- Département de sciences biologiques, Université de Montréal, Montreal H2V 2S9, QC, Canada; Biology Department, Concordia University, Montreal H4B 1R6, QC, Canada; GRIL, Groupe de Recherche Interuniversitaire en Limnologie, Département de sciences biologiques, Université de Montréal, Campus MIL, Montreal H3C 3J7, QC, Canada
| | - D E Ponton
- Département de sciences biologiques, Université de Montréal, Montreal H2V 2S9, QC, Canada; GRIL, Groupe de Recherche Interuniversitaire en Limnologie, Département de sciences biologiques, Université de Montréal, Campus MIL, Montreal H3C 3J7, QC, Canada
| | - V Storck
- Département de sciences biologiques, Université de Montréal, Montreal H2V 2S9, QC, Canada; Biology Department, Concordia University, Montreal H4B 1R6, QC, Canada
| | - M Leclerc
- Département de sciences biologiques, Université de Montréal, Montreal H2V 2S9, QC, Canada; GRIL, Groupe de Recherche Interuniversitaire en Limnologie, Département de sciences biologiques, Université de Montréal, Campus MIL, Montreal H3C 3J7, QC, Canada
| | - F Bilodeau
- Hydro-Québec Production, Environment Department, Montreal, QC, Canada
| | - D A Walsh
- Biology Department, Concordia University, Montreal H4B 1R6, QC, Canada; GRIL, Groupe de Recherche Interuniversitaire en Limnologie, Département de sciences biologiques, Université de Montréal, Campus MIL, Montreal H3C 3J7, QC, Canada
| | - M Amyot
- Département de sciences biologiques, Université de Montréal, Montreal H2V 2S9, QC, Canada; GRIL, Groupe de Recherche Interuniversitaire en Limnologie, Département de sciences biologiques, Université de Montréal, Campus MIL, Montreal H3C 3J7, QC, Canada.
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10
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Beaumont C, Turgeon J, Idir M, Neusser D, Lapointe R, Caron S, Dupont W, D’Astous D, Shamsuddin S, Hamza S, Landry É, Ludwigs S, Leclerc M. Water-Processable Self-Doped Conducting Polymers via Direct (Hetero)arylation Polymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00847] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Josyane Turgeon
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Maël Idir
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | - David Neusser
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Rosalie Lapointe
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Samuel Caron
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | - William Dupont
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Dominic D’Astous
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
| | | | - Sarah Hamza
- Polyanalytik, 700 Collip Circle #202, London, Ontario N6G 4X8, Canada
| | - Éric Landry
- Polyanalytik, 700 Collip Circle #202, London, Ontario N6G 4X8, Canada
| | - Sabine Ludwigs
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, 70569 Stuttgart, Germany
| | - Mario Leclerc
- Département de Chimie, Université Laval, Québec, Québec G1V 0A6, Canada
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11
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Molina A, Coquart J, Marie JP, Lamia B, Tardif C, Leclerc M, Prum G, Debeaumont D. [Vocal cord dysfunction in athletes: Interest of rehabilitation to effort]. Rev Mal Respir 2021; 38:418-422. [PMID: 33832809 DOI: 10.1016/j.rmr.2021.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 01/25/2021] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Vocal Cord Dysfunction (VCD) is a syndrome characterized by paradoxical adduction of the vocal folds during breathing. Its non-specific clinical manifestations frequently lead to misdiagnosis and delay in its treatment. The treatment of VCD is not pharmacological but rehabilitative and remains poorly appreciated. OBSERVATION In this clinical case we describe a 16-year-old female judoka who presented with effort intolerance associated with occasional dyspnea, which had suddenly worsened over the preceding few months so that in now produced sudden respiratory difficulty, mainly during intense and sudden efforts. After a period where her symptoms were confused with asthma, she was diagnosed with exercise-induced VCD. Her treatment was aimed to: (a) rehabilitate respiratory mechanics in order to eliminate abdominal-thoracic asynchrony, (b) rehabilitate naso-nasal breathing, (c) train her to control abdominal-diaphragmatic breathing at rest and then during effort, (d) train her to use ventilatory control as soon as prodromal symptoms appear in order to prevent the development of stridor or complete closure of the vocal folds (at rest and then progressively during exercise). CONCLUSION Following the implementation of these rehabilitation strategies to correct her ventilatory and dyskinetic issues, the patient no longer develops respiratory discomfort during exercise, including during judo competitions.
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Affiliation(s)
- A Molina
- CIC-CRB 1404, unité de physiologie respiratoire et sportive, centre hospitalier universitaire de Rouen, 1, rue de Germont, 76000 Rouen, France.
| | - J Coquart
- UFR STAPS, EA 3832, CETAPS, université de Rouen-Normandie, 76821, Mont-Saint-Aignan, France
| | - J P Marie
- Service d'oto-rhino-laryngologie, centre hospitalier universitaire de Rouen, 76000 Rouen, France
| | - B Lamia
- Service de soins intensifs de pneumologie, centre hospitalier universitaire de Rouen, 76000 Rouen, France
| | - C Tardif
- CIC-CRB 1404, unité de physiologie respiratoire et sportive, centre hospitalier universitaire de Rouen, 1, rue de Germont, 76000 Rouen, France
| | - M Leclerc
- Cabinet de Kinésithérapie, 76000 Rouen, France
| | - G Prum
- CIC-CRB 1404, unité de physiologie respiratoire et sportive, centre hospitalier universitaire de Rouen, 1, rue de Germont, 76000 Rouen, France
| | - D Debeaumont
- CIC-CRB 1404, unité de physiologie respiratoire et sportive, centre hospitalier universitaire de Rouen, 1, rue de Germont, 76000 Rouen, France
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Farahat ME, Laventure A, Anderson MA, Mainville M, Tintori F, Leclerc M, Ratcliff EL, Welch GC. Slot-Die-Coated Ternary Organic Photovoltaics for Indoor Light Recycling. ACS Appl Mater Interfaces 2020; 12:43684-43693. [PMID: 32946216 DOI: 10.1021/acsami.0c11809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Efficient organic photovoltaics (OPVs) based on slot-die-coated (SD) ternary blends were developed for low-intensity indoor light harvesting. For active layers processed in air and from eco-friendly solvents, our device performances (under 1 sun and low light intensity) are the highest reported values for fluoro-dithiophenyl-benzothiadiazole donor polymer-based OPVs. The N-annulated perylene diimide dimer acceptor was incorporated into a blend of donor polymer (FBT) and fullerene acceptor (PC61BM) to give ternary bulk heterojunction blends. SD ternary-based devices under 1 sun illumination showed enhanced power conversion efficiency (PCE) from 6.8 to 7.7%. We observed enhancement in the short-circuit current density and open-circuit voltage of the devices. Under low light intensity light-emitting device illumination (ca. 2000 lux), the ternary-based devices achieved a PCE of 14.0% and a maximum power density of 79 μW/cm2 compared to a PCE of 12.0% and a maximum power density of 68 μW/cm2 for binary-based devices. Under the same illumination conditions, the spin-coated (SC) devices showed a PCE of 15.5% and a maximum power density of 88 μW/cm2. Collectively, these results demonstrate the exceptional promise of a SD ternary blend system for indoor light harvesting and the need to optimize active layers based on industry-relevant coating approaches toward mini modules.
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Affiliation(s)
- Mahmoud E Farahat
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Audrey Laventure
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Michael A Anderson
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
| | - Mathieu Mainville
- Department of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Francesco Tintori
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Mario Leclerc
- Department of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Erin L Ratcliff
- Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, United States
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, Arizona 85721, United States
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Gregory C Welch
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
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Peterhans L, Nicolaidou E, Diamantis P, Alloa E, Leclerc M, Surin M, Clément S, Rothlisberger U, Banerji N, Hayes SC. Structural and Photophysical Templating of Conjugated Polyelectrolytes with Single-Stranded DNA. Chem Mater 2020; 32:7347-7362. [PMID: 33122875 PMCID: PMC7587141 DOI: 10.1021/acs.chemmater.0c02251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/06/2020] [Indexed: 06/11/2023]
Abstract
A promising approach to influence and control the photophysical properties of conjugated polymers is directing their molecular conformation by templating. We explore here the templating effect of single-stranded DNA oligomers (ssDNAs) on cationic polythiophenes with the goal to uncover the intermolecular interactions that direct the polymer backbone conformation. We have comprehensively characterized the optical behavior and structure of the polythiophenes in conformationally distinct complexes depending on the sequence of nucleic bases and addressed the effect on the ultrafast excited-state relaxation. This, in combination with molecular dynamics simulations, allowed us a detailed atomistic-level understanding of the structure-property correlations. We find that electrostatic and other noncovalent interactions direct the assembly with the polymer, and we identify that optimal templating is achieved with (ideally 10-20) consecutive cytosine bases through numerous π-stacking interactions with the thiophene rings and side groups of the polymer, leading to a rigid assembly with ssDNA, with highly ordered chains and unique optical signatures. Our insights are an important step forward in an effective approach to structural templating and optoelectronic control of conjugated polymers and organic materials in general.
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Affiliation(s)
- Lisa Peterhans
- Department
of Chemistry and Biochemistry, University
of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Eliana Nicolaidou
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus
| | - Polydefkis Diamantis
- Laboratory
of Computational Chemistry and Biochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Elisa Alloa
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus
| | - Mario Leclerc
- Department
of Chemistry, Université Laval, G1K 7P4 Quebec
City, Quebec, Canada
| | - Mathieu Surin
- Laboratory
for Chemistry of Novel Materials, Center for Innovation in Materials
and Polymers, University of Mons −
UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - Sébastien Clément
- Institut
Charles Gerhardt Montpellier, ICGM, UMR 5253 CNRS, Université de Montpellier, Place Eugène Bataillon, F-34095 Montpellier, Cedex
05, France
| | - Ursula Rothlisberger
- Laboratory
of Computational Chemistry and Biochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Natalie Banerji
- Department
of Chemistry and Biochemistry, University
of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Sophia C. Hayes
- Department
of Chemistry, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus
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Yuan J, Zhang H, Zhang R, Wang Y, Hou J, Leclerc M, Zhan X, Huang F, Gao F, Zou Y, Li Y. Reducing Voltage Losses in the A-DA′D-A Acceptor-Based Organic Solar Cells. Chem 2020. [DOI: 10.1016/j.chempr.2020.08.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abd‐El‐Aziz AS, Antonietti M, Barner‐Kowollik C, Binder WH, Böker A, Boyer C, Buchmeiser MR, Cheng SZD, D’Agosto F, Floudas G, Frey H, Galli G, Genzer J, Hartmann L, Hoogenboom R, Ishizone T, Kaplan DL, Leclerc M, Lendlein A, Liu B, Long TE, Ludwigs S, Lutz J, Matyjaszewski K, Meier MAR, Müllen K, Müllner M, Rieger B, Russell TP, Savin DA, Schlüter AD, Schubert US, Seiffert S, Severing K, Soares JBP, Staffilani M, Sumerlin BS, Sun Y, Tang BZ, Tang C, Théato P, Tirelli N, Tsui OKC, Unterlass MM, Vana P, Voit B, Vyazovkin S, Weder C, Wiesner U, Wong W, Wu C, Yagci Y, Yuan J, Zhang G. The Next 100 Years of Polymer Science. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000216] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mainville M, Tremblay V, Fenniri MZ, Laventure A, Farahat ME, Ambrose R, Welch GC, Hill IG, Leclerc M. Water Compatible Direct (Hetero)arylation Polymerization of PPDT2FBT: A Pathway Towards Large‐Scale Production of Organic Solar Cells. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000231] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mathieu Mainville
- Department of ChemistryUniversité Laval 1046 Avenue de la medecine Quebec City G1V 0A6 (QC Canada
| | - Vicky Tremblay
- Department of ChemistryUniversité Laval 1046 Avenue de la medecine Quebec City G1V 0A6 (QC Canada
| | - Miriam Z. Fenniri
- Department of ChemistryUniversité Laval 1046 Avenue de la medecine Quebec City G1V 0A6 (QC Canada
| | - Audrey Laventure
- Department of ChemistryUniversity of Calgary 2500 University Drive NW Calgary T2N 1N4 (AB Canada
| | - Mahmoud E. Farahat
- Department of ChemistryUniversity of Calgary 2500 University Drive NW Calgary T2N 1N4 (AB Canada
| | - Ryan Ambrose
- Department of Physics & Atmospheric ScienceDalhousie University 6310 Coburg Road Halifax B3H 4R2 (NS Canada
| | - Gregory C. Welch
- Department of ChemistryUniversity of Calgary 2500 University Drive NW Calgary T2N 1N4 (AB Canada
| | - Ian G. Hill
- Department of Physics & Atmospheric ScienceDalhousie University 6310 Coburg Road Halifax B3H 4R2 (NS Canada
| | - Mario Leclerc
- Department of ChemistryUniversité Laval 1046 Avenue de la medecine Quebec City G1V 0A6 (QC Canada
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17
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Abstract
Human harvest can induce selection on life history and morphological traits, leading to ecological and evolutionary responses. Our understanding of harvest-induced selection on behavioral traits is, however, very limited. Here, we assessed whether hunters harvest, consciously or not, individuals with specific behavioral traits. We used long-term, detailed behavioral and survival data of a heavily harvested brown bear (Ursus arctos) population in Sweden. We found that hunters harvested male bears that were less active during legal hunting hours and had lower movement rates. Also, hunters harvested male and female bears that used habitats closer to roads. We provide an empirical example that individual behavior can modulate vulnerability to hunting and that hunters could exert a selective pressure on wildlife behaviors. This study increases our understanding of the complex interactions between harvest method, human behavior, and animal behavior that are at play in harvest-induced selection and provides better insight into the full effects of human harvest on wild populations.
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Affiliation(s)
- M Leclerc
- Canada Research Chair in Evolutionary Demography and Conservation & Centre for Northern Studies, Département de biologie, Université de Sherbrooke, Sherbrooke, J1K2R1, Canada.
| | - A Zedrosser
- Faculty of Technology, Natural Sciences and Maritime Sciences, Department of Natural Sciences and Environmental Health, University of South-Eastern Norway, N-3800 Bø i, Telemark, Norway. .,Department of Integrative Biology, Institute of Wildlife Biology and Game Management, University of Natural Resources and Life Sciences, Vienna, Gregor Mendel Str. 33, A - 1180, Vienna, Austria.
| | - J E Swenson
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, PO Box 5003, NO - 1432 Ås, Oslo, Norway.,Norwegian Institute for Nature Research, NO-7485, Trondheim, Norway
| | - F Pelletier
- Canada Research Chair in Evolutionary Demography and Conservation & Centre for Northern Studies, Département de biologie, Université de Sherbrooke, Sherbrooke, J1K2R1, Canada
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18
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19
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Yuan J, Zhang Y, Zhou L, Zhang C, Lau TK, Zhang G, Lu X, Yip HL, So SK, Beaupré S, Mainville M, Johnson PA, Leclerc M, Chen H, Peng H, Li Y, Zou Y. Fused Benzothiadiazole: A Building Block for n-Type Organic Acceptor to Achieve High-Performance Organic Solar Cells. Adv Mater 2019; 31:e1807577. [PMID: 30883937 DOI: 10.1002/adma.201807577] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/11/2019] [Indexed: 05/20/2023]
Abstract
Narrow bandgap n-type organic semiconductors (n-OS) have attracted great attention in recent years as acceptors in organic solar cells (OSCs), due to their easily tuned absorption and electronic energy levels in comparison with fullerene acceptors. Herein, a new n-OS acceptor, Y5, with an electron-deficient-core-based fused structure is designed and synthesized, which exhibits a strong absorption in the 600-900 nm region with an extinction coefficient of 1.24 × 105 cm-1 , and an electron mobility of 2.11 × 10-4 cm2 V-1 s-1 . By blending Y5 with three types of common medium-bandgap polymers (J61, PBDB-T, and TTFQx-T1) as donors, all devices exhibit high short-circuit current densities over 20 mA cm-2 . As a result, the power conversion efficiency of the Y5-based OSCs with J61, TTFQx-T1, and PBDB-T reaches 11.0%, 13.1%, and 14.1%, respectively. This indicates that Y5 is a universal and highly efficient n-OS acceptor for applications in organic solar cells.
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Affiliation(s)
- Jun Yuan
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Yunqiang Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Liuyang Zhou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chujun Zhang
- Department of Physics and Institute of Advanced Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, 999077, P. R. China
| | - Tsz-Ki Lau
- Department of Physics, The Chinese University of Hong Kong, New Territories, Hong Kong, 999077, P. R. China
| | - Guichuan Zhang
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Xinhui Lu
- Department of Physics, The Chinese University of Hong Kong, New Territories, Hong Kong, 999077, P. R. China
| | - Hin-Lap Yip
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Shu Kong So
- Department of Physics and Institute of Advanced Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, 999077, P. R. China
| | - Serge Beaupré
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Mathieu Mainville
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Paul A Johnson
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Mario Leclerc
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Honggang Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Hongjian Peng
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Yongfang Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yingping Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
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20
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Milord F, Jolicoeur G, Hacala MA, Jiang J, Leclerc M, Phan E, Lambert L. Clinical presentation of reported lyme disease cases among children from Quebec (Canada) between 2009-2017. Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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21
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Li P, Mainville M, Zhang Y, Leclerc M, Sun B, Izquierdo R, Ma D. Air-Processed, Stable Organic Solar Cells with High Power Conversion Efficiency of 7.41. Small 2019; 15:e1804671. [PMID: 30637957 DOI: 10.1002/smll.201804671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/04/2018] [Indexed: 06/09/2023]
Abstract
High efficiency, excellent stability, and air processability are all important factors to consider in endeavoring to push forward the real-world application of organic solar cells. Herein, an air-processed inverted photovoltaic device built upon a low-bandgap, air-stable, phenanthridinone-based ter-polymer (C150 H218 N6 O6 S4 )n (PDPPPTD) and [6,6]-phenyl-C61 -butyric acid methyl ester (PC61 BM) without involving any additive engineering processes yields a high efficiency of 6.34%. The PDPPPTD/PC61 BM devices also exhibit superior thermal stability and photo-stability as well as long-term stability in ambient atmosphere without any device encapsulation, which show less performance decay as compared to most of the reported organic solar cells. In view of their great potential, solvent additive engineering via adding p-anisaldehyde (AA) is attempted, leading to a further improved efficiency of 7.41%, one of the highest efficiencies for all air-processed and stable organic photovoltaic devices. Moreover, the device stability under different ambient conditions is also further improved with the AA additive engineering. Various characterizations are conducted to probe the structural, morphology, and chemical information in order to correlate the structure with photovoltaic performance. This work paves a way for developing a new generation of air-processable organic solar cells for possible commercial application.
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Affiliation(s)
- Pandeng Li
- Center of Energy, Materials and Telecommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boul. Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada
| | - Mathieu Mainville
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Yuliang Zhang
- Département de Génie Électrique, École de Technologie Supérieure, Montréal, Quebec, H3C 1K3, Canada
| | - Mario Leclerc
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Baoquan Sun
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Ricardo Izquierdo
- Département de Génie Électrique, École de Technologie Supérieure, Montréal, Quebec, H3C 1K3, Canada
| | - Dongling Ma
- Center of Energy, Materials and Telecommunications, Institut National de la Recherche Scientifique (INRS), 1650 Boul. Lionel-Boulet, Varennes, Quebec, J3X 1S2, Canada
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22
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Lan A, Vidal-Lletjós S, Andriamihaja M, Lepage P, Leclerc M, Blais A, Grauso-Culetto M, Benamouzig R, Tomé D, Blachier F. Influence du niveau d’apport protéique alimentaire sur la réparation épithéliale après un épisode inflammatoire colique aigu. NUTR CLIN METAB 2018. [DOI: 10.1016/j.nupar.2018.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Blaskovits JT, Johnson PA, Leclerc M. Mechanistic Origin of β-Defect Formation in Thiophene-Based Polymers Prepared by Direct (Hetero)arylation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01142] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Paul A. Johnson
- Department of Chemistry, Université Laval, Québec City, Québec G1V 0A6, Canada
| | - Mario Leclerc
- Department of Chemistry, Université Laval, Québec City, Québec G1V 0A6, Canada
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24
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Bura T, Beaupré S, Légaré MA, Ibraikulov OA, Leclerc N, Leclerc M. Theoretical Calculations for Highly Selective Direct Heteroarylation Polymerization: New Nitrile-Substituted Dithienyl-Diketopyrrolopyrrole-Based Polymers. Molecules 2018; 23:molecules23092324. [PMID: 30213056 PMCID: PMC6225168 DOI: 10.3390/molecules23092324] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/07/2018] [Accepted: 09/11/2018] [Indexed: 11/17/2022] Open
Abstract
Direct Heteroarylation Polymerization (DHAP) is becoming a valuable alternative to classical polymerization methods being used to synthesize π-conjugated polymers for organic electronics applications. In previous work, we showed that theoretical calculations on activation energy (Ea) of the C–H bonds were helpful to rationalize and predict the selectivity of the DHAP. For readers’ convenience, we have gathered in this work all our previous theoretical calculations on Ea and performed new ones. Those theoretical calculations cover now most of the widely utilized electron-rich and electron-poor moieties studied in organic electronics like dithienyl-diketopyrrolopyrrole (DT-DPP) derivatives. Theoretical calculations reported herein show strong modulation of the Ea of C–H bond on DT-DPP when a bromine atom or strong electron withdrawing groups (such as fluorine or nitrile) are added to the thienyl moiety. Based on those theoretical calculations, new cyanated dithienyl-diketopyrrolopyrrole (CNDT-DPP) monomers and copolymers were prepared by DHAP and their electro-optical properties were compared with their non-fluorinated and fluorinated analogues.
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Affiliation(s)
- Thomas Bura
- Canada Research Chair on Electroactive and Photoactive Polymers, Department of Chemistry, Université Laval, Quebec City, QC G1V 0A6, Canada.
| | - Serge Beaupré
- Canada Research Chair on Electroactive and Photoactive Polymers, Department of Chemistry, Université Laval, Quebec City, QC G1V 0A6, Canada.
| | - Marc-André Légaré
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Olzhas A Ibraikulov
- Laboratoire ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, 67037 Strasbourg, France.
| | - Nicolas Leclerc
- Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé, ICPEES, Université de Strasbourg, CNRS, 67087 Strasbourg, France.
| | - Mario Leclerc
- Canada Research Chair on Electroactive and Photoactive Polymers, Department of Chemistry, Université Laval, Quebec City, QC G1V 0A6, Canada.
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25
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Blaskovits JT, Leclerc M. CH Activation as a Shortcut to Conjugated Polymer Synthesis. Macromol Rapid Commun 2018; 40:e1800512. [DOI: 10.1002/marc.201800512] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/08/2018] [Indexed: 11/11/2022]
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26
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Aiach M, Fiessinger JN, Capron L, Nussas C, Housset E, Leclerc M. Kinetic Study of Factor X During Oral Anticoagulation with Acenocoumarol: Potential Value for the Initiation of Treatment. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1657129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryWe measured prothrombin time and coagulation factors (F) VII and X in 19 patients under heparin treatment receiving acenocoumarol (3 mg per day) without a loading dose. Blood samples were obtained on the 1st (D0), 2nd (D1), 3d (D2), 5th (D4), 7th (D6) and 9th (D8) days of treatment. In 7 patients (group A) acenocoumarol dosage had to be reduced at D2, D4, or D6, based on a prothrombin time smaller than 25% of normal. In the remaining 12 patients (group B), FVII and prothrombin time followed a double exponential decline. Conversely, the FX decrease could be fitted to a single exponential pattern. The slope of the linear relation, loge (FX) = b - a (D), calculated from measurements made at D0, D1, and D2, allowed us to predict the FX level at D8 by simple extrapolation, and, consequently, to estimate as early as D2 whether a change of acenocoumarol dosage would have been required. In group A this extrapolation always announced a dangerously low FX concentration at Dg that justified the preventive reduction of acenocoumarol dosage. We conclude that FX can be a valuable guide in the initiation of an oral anticoagulant treatment.
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Affiliation(s)
- M Aiach
- The Laboratoire d'Hémostase, Paris, France
| | - J-N Fiessinger
- The Chaire de Clinique Médicale et de Pathologie Vasculaire, Hôpital Broussais, Paris, France
| | - L Capron
- The Chaire de Clinique Médicale et de Pathologie Vasculaire, Hôpital Broussais, Paris, France
| | - C Nussas
- The Laboratoire d'Hémostase, Paris, France
| | - E Housset
- The Chaire de Clinique Médicale et de Pathologie Vasculaire, Hôpital Broussais, Paris, France
| | - M Leclerc
- The Laboratoire d'Hémostase, Paris, France
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27
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Leclerc M, Letarte J. 20. Une criminologie au-delà de nos frontières ? Questions de criminologie 2018:219-228. [DOI: 10.4000/books.pum.6626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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28
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Hartard C, Leclerc M, Rivet R, Maul A, Loutreul J, Banas S, Boudaud N, Gantzer C. F-Specific RNA Bacteriophages, Especially Members of Subgroup II, Should Be Reconsidered as Good Indicators of Viral Pollution of Oysters. Appl Environ Microbiol 2018; 84:e01866-17. [PMID: 29079627 PMCID: PMC5734038 DOI: 10.1128/aem.01866-17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/23/2017] [Indexed: 12/27/2022] Open
Abstract
Norovirus (NoV) is the leading cause of gastroenteritis outbreaks linked to oyster consumption. In this study, we investigated the potential of F-specific RNA bacteriophages (FRNAPH) as indicators of viral contamination in oysters by focusing especially on FRNAPH subgroup II (FRNAPH-II). These viral indicators have been neglected because their behavior is sometimes different from that of NoV in shellfish, especially during the depuration processes usually performed before marketing. However, a significant bias needs to be taken into account. This bias is that, in the absence of routine culture methods, NoV is targeted by genome detection, while the presence of FRNAPH is usually investigated by isolation of infectious particles. In this study, by targeting both viruses using genome detection, a significant correlation between the presence of FRNAPH-II and that of NoV in shellfish collected from various European harvesting areas impacted by fecal pollution was observed. Moreover, during their depuration, while the long period of persistence of NoV was confirmed, a similar or even longer period of persistence of the FRNAPH-II genome, which was over 30 days, was observed. Such a striking genome persistence calls into question the relevance of molecular methods for assessing viral hazards. Targeting the same virus (i.e., FRNAPH-II) by culture and genome detection in specimens from harvesting areas as well as during depuration, we concluded that the presence of genomes in shellfish does not provide any information on the presence of the corresponding infectious particles. In view of these results, infectious FRNAPH detection should be reconsidered as a valuable indicator in oysters, and its potential for use in assessing viral hazard needs to be investigated.IMPORTANCE This work brings new data about the behavior of viruses in shellfish, as well as about the relevance of molecular methods for their detection and evaluation of the viral hazard. First, a strong correlation between the presence of F-specific RNA bacteriophages of subgroup II (FRNAPH-II) and that of norovirus (NoV) in shellfish impacted by fecal contamination has been observed when both viruses are detected using molecular approaches. Second, when reverse transcription-PCR and culture are used to detect FRNAPH-II in shellfish, it appears that the genomes of the viruses present a longer period of persistence than infectious virus, and thus, virus genome detection fails to give information about the concomitant presence of infectious viruses. Finally, this study shows that FRNAPH persist at least as long as NoV does. These data are major arguments to reconsider the potential of FRNAPH as indicators of shellfish viral quality.
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Affiliation(s)
- C Hartard
- Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, Nancy, France
- CNRS, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Nancy, France
- Institut Jean Barriol, Université de Lorraine, Faculté des Sciences et Technologies, Vandœuvre-lès-Nancy, France
| | - M Leclerc
- Actalia, Food Safety Department, Saint-Lô, France
| | - R Rivet
- Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, Nancy, France
- CNRS, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Nancy, France
- Institut Jean Barriol, Université de Lorraine, Faculté des Sciences et Technologies, Vandœuvre-lès-Nancy, France
| | - A Maul
- Université de Lorraine, Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), UMR 7360, Metz, France
| | - J Loutreul
- Actalia, Food Safety Department, Saint-Lô, France
| | - S Banas
- Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, Nancy, France
- CNRS, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Nancy, France
- Institut Jean Barriol, Université de Lorraine, Faculté des Sciences et Technologies, Vandœuvre-lès-Nancy, France
| | - N Boudaud
- Actalia, Food Safety Department, Saint-Lô, France
| | - C Gantzer
- Université de Lorraine, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, Nancy, France
- CNRS, Laboratoire de Chimie Physique et Microbiologie pour l'Environnement (LCPME), UMR 7564, Nancy, France
- Institut Jean Barriol, Université de Lorraine, Faculté des Sciences et Technologies, Vandœuvre-lès-Nancy, France
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29
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Steyaert SMJG, Leclerc M, Pelletier F, Kindberg J, Brunberg S, Swenson JE, Zedrosser A. Human shields mediate sexual conflict in a top predator. Proc Biol Sci 2017; 283:rspb.2016.0906. [PMID: 27335423 PMCID: PMC4936045 DOI: 10.1098/rspb.2016.0906] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 05/25/2016] [Indexed: 11/12/2022] Open
Abstract
Selecting the right habitat in a risky landscape is crucial for an individual's survival and reproduction. In predator-prey systems, prey often can anticipate the habitat use of their main predator and may use protective associates (i.e. typically an apex predator) as shields against predation. Although never tested, such mechanisms should also evolve in systems in which sexual conflict affects offspring survival. Here, we assessed the relationship between offspring survival and habitat selection, as well as the use of protective associates, in a system in which sexually selected infanticide (SSI), rather than interspecific predation, affects offspring survival. We used the Scandinavian brown bear (Ursus arctos) population with SSI in a human-dominated landscape as our model system. Bears, especially adult males, generally avoid humans in our study system. We used resource selection functions to contrast habitat selection of GPS-collared mothers that were successful (i.e. surviving litters, n = 19) and unsuccessful (i.e. complete litter loss, n = 11) in keeping their young during the mating season (2005-2012). Habitat selection was indeed a predictor of litter survival. Successful mothers were more likely to use humans as protective associates, whereas unsuccessful mothers avoided humans. Our results suggest that principles of predator-prey and fear ecology theory (e.g. non-consumptive and cascading effects) can also be applied to the context of sexual conflict.
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Affiliation(s)
- S M J G Steyaert
- Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1432 Ås, Norway Faculty of Arts and Sciences, Department of Environmental and Health Studies, University College of Southeast Norway, 3800 Bø, Norway
| | - M Leclerc
- Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - F Pelletier
- Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | - J Kindberg
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden Norwegian Institute for Nature Research, 7485 Trondheim, Norway
| | - S Brunberg
- Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1432 Ås, Norway
| | - J E Swenson
- Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1432 Ås, Norway Norwegian Institute for Nature Research, 7485 Trondheim, Norway
| | - A Zedrosser
- Faculty of Arts and Sciences, Department of Environmental and Health Studies, University College of Southeast Norway, 3800 Bø, Norway Institute of Wildlife Biology and Game Management, University of Natural Resources and Life Sciences, 1180 Vienna, Austria
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30
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Bura T, Beaupré S, Ibraikulov OA, Légaré MA, Quinn J, Lévêque P, Heiser T, Li Y, Leclerc N, Leclerc M. New Fluorinated Dithienyldiketopyrrolopyrrole Monomers and Polymers for Organic Electronics. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01198] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Thomas Bura
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Serge Beaupré
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Olzhas A. Ibraikulov
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Marc-André Légaré
- Institut
für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Jesse Quinn
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Patrick Lévêque
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Thomas Heiser
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Yuning Li
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Nicolas Leclerc
- Institut
de Chimie et Procédés pour l’Énergie,
l’Environnement et la Santé, ICPEES, Université de Strasbourg, CNRS, Strasbourg 67087, France
| | - Mario Leclerc
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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Chemouny J, Abbad L, Gleeson J, Jamin A, Lepage P, Daugas E, Vrtovsnik F, Leclerc M, Berthelot L, Monteiro R. La modulation du microbiote intestinal par administration d’antibiotiques prévient la maladie rénale dans un modèle murin de néphropathie à IgA. Nephrol Ther 2017. [DOI: 10.1016/j.nephro.2017.08.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Roy C, Bura T, Beaupré S, Légaré MA, Sun JP, Hill IG, Leclerc M. Fluorinated Thiophene-Based Synthons: Polymerization of 1,4-Dialkoxybenzene and Fluorinated Dithieno-2,1,3-benzothiadiazole by Direct Heteroarylation. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00905] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Carl Roy
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Thomas Bura
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Serge Beaupré
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Marc-André Légaré
- Institut
für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jon-Paul Sun
- Department
of Physics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Ian G. Hill
- Department
of Physics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Mario Leclerc
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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33
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Siove A, David R, Ades D, Roux C, Leclerc M. Homo- et co-polymérisations oxydantes du carbazole et du thiophène substitués. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1995920787] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Bura T, Beaupré S, Légaré MA, Quinn J, Rochette E, Blaskovits JT, Fontaine FG, Pron A, Li Y, Leclerc M. Direct heteroarylation polymerization: guidelines for defect-free conjugated polymers. Chem Sci 2017; 8:3913-3925. [PMID: 28966781 PMCID: PMC5578375 DOI: 10.1039/c7sc00589j] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/09/2017] [Indexed: 12/02/2022] Open
Abstract
Direct (hetero)arylation polymerization (DHAP) has emerged as a valuable and atom-economical alternative to traditional cross-coupling methods for the synthesis of low-cost and efficient conjugated polymers for organic electronics. However, when applied to the synthesis of certain (hetero)arene-based materials, a lack of C-H bond selectivity has been observed. To prevent such undesirable side-reactions, we report the design and synthesis of new, bulky, phosphine-based ligands that significantly enhance selectivity of the DHAP process for both halogenated and non-halogenated electron-rich and electron-deficient thiophene-based comonomers. To better understand the selectivity issues, density functional theory (DFT) calculations have been performed on various halogenated and non-halogenated electron-rich and electron-deficient thiophene-based comonomers. Calculations showed that the presence of bromine atoms decreases the energy of activation (Ea) of the adjacent C-H bonds, allowing undesirable β-defects for some brominated aromatic units. Both calculations and the new ligands should lead to the rational design of monomers and methods for the preparation of defect-free conjugated polymers from DHAP.
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Affiliation(s)
- Thomas Bura
- Canada Research Chair on Electroactive and Photoactive Polymers , Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada .
| | - Serge Beaupré
- Canada Research Chair on Electroactive and Photoactive Polymers , Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada .
| | - Marc-André Légaré
- Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada
| | - Jesse Quinn
- Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Etienne Rochette
- Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada
| | - J Terence Blaskovits
- Canada Research Chair on Electroactive and Photoactive Polymers , Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada .
| | | | - Agnieszka Pron
- Merck Chemicals Ltd , Chilworth Technical Centre , SO16 7QD , UK (A Subsidiary of Merck KGaA, Darmstadt, Germany)
| | - Yuning Li
- Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Mario Leclerc
- Canada Research Chair on Electroactive and Photoactive Polymers , Department of Chemistry , Université Laval , Quebec City , Quebec G1V 0A6 , Canada .
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Affiliation(s)
- François Grenier
- Département de Chimie, Université Laval, Québec City, Québec G1V 0A6, Canada
| | - Karine Goudreau
- Département de Chimie, Université Laval, Québec City, Québec G1V 0A6, Canada
| | - Mario Leclerc
- Département de Chimie, Université Laval, Québec City, Québec G1V 0A6, Canada
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36
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Peterhans L, Alloa E, Sheima Y, Vannay L, Leclerc M, Corminboeuf C, Hayes SC, Banerji N. Salt-induced thermochromism of a conjugated polyelectrolyte. Phys Chem Chem Phys 2017; 19:28853-28866. [DOI: 10.1039/c7cp02734f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We report here the photophysical properties of a water-soluble polythiophene with cationic side-chains in PBS buffer solution.
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Affiliation(s)
- Lisa Peterhans
- Department of Chemistry
- University of Fribourg
- CH-1700 Fribourg
- Switzerland
| | - Elisa Alloa
- Department of Chemistry
- University of Cyprus
- Nicosia
- Cyprus
| | - Yauhen Sheima
- Department of Chemistry
- University of Fribourg
- CH-1700 Fribourg
- Switzerland
| | - Laurent Vannay
- Laboratory for Computational Molecular Design
- Institute of Chemical Sciences and Engineering
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Mario Leclerc
- Department of Chemistry
- Université Laval
- G1K 7P4 Quebec City
- Canada
| | - Clémence Corminboeuf
- Laboratory for Computational Molecular Design
- Institute of Chemical Sciences and Engineering
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | | | - Natalie Banerji
- Department of Chemistry
- University of Fribourg
- CH-1700 Fribourg
- Switzerland
- Department of Chemistry and Biochemistry
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Blaskovits JT, Bura T, Beaupré S, Lopez SA, Roy C, de Goes Soares J, Oh A, Quinn J, Li Y, Aspuru-Guzik A, Leclerc M. A Study of the Degree of Fluorination in Regioregular Poly(3-hexylthiophene). Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02365] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- J. Terence Blaskovits
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Thomas Bura
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Serge Beaupré
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Steven A. Lopez
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Carl Roy
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Julio de Goes Soares
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Adam Oh
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Jesse Quinn
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yuning Li
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Alán Aspuru-Guzik
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Mario Leclerc
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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38
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Pouliot JR, Grenier F, Blaskovits JT, Beaupré S, Leclerc M. Direct (Hetero)arylation Polymerization: Simplicity for Conjugated Polymer Synthesis. Chem Rev 2016; 116:14225-14274. [DOI: 10.1021/acs.chemrev.6b00498] [Citation(s) in RCA: 333] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jean-Rémi Pouliot
- Département de Chimie, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - François Grenier
- Département de Chimie, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | | | - Serge Beaupré
- Département de Chimie, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Mario Leclerc
- Département de Chimie, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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39
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Yan H, Manion JG, Yuan M, García de Arquer FP, McKeown GR, Beaupré S, Leclerc M, Sargent EH, Seferos DS. Increasing Polymer Solar Cell Fill Factor by Trap-Filling with F4-TCNQ at Parts Per Thousand Concentration. Adv Mater 2016; 28:6491-6496. [PMID: 27171655 DOI: 10.1002/adma.201601553] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 04/05/2016] [Indexed: 06/05/2023]
Abstract
Intrinsic traps in organic semiconductors can be eliminated by trap-filling with F4-TCNQ. Photovoltaic tests show that devices with F4-TCNQ at parts per thousand concentration outperform control devices due to an improved fill factor. Further studies confirm the trap-filling pathway and demonstrate the general nature of this finding.
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Affiliation(s)
- Han Yan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Joseph G Manion
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Mingjian Yuan
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - F Pelayo García de Arquer
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - George R McKeown
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Serge Beaupré
- Department of Chemistry, Université Laval, Avenue de la Médecine, Québec City, Québec, G1V 0A6, Canada
| | - Mario Leclerc
- Department of Chemistry, Université Laval, Avenue de la Médecine, Québec City, Québec, G1V 0A6, Canada
| | - Edward H Sargent
- The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Dwight S Seferos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
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40
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Affiliation(s)
- Thomas Bura
- Department of Chemistry, Université Laval, Quebec City, QC, Canada G1V 0A6
| | | | - Mario Leclerc
- Department of Chemistry, Université Laval, Quebec City, QC, Canada G1V 0A6
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Mondot S, Lepage P, Seksik P, Allez M, Tréton X, Bouhnik Y, Colombel JF, Leclerc M, Pochart P, Doré J, Marteau P. Structural robustness of the gut mucosal microbiota is associated with Crohn's disease remission after surgery. Gut 2016; 65:954-62. [PMID: 26628508 PMCID: PMC4893116 DOI: 10.1136/gutjnl-2015-309184] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 11/01/2015] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Preventing postoperative recurrence after ileocolonic resection (ICR) for Crohn's disease (CD) is challenging. Defining the disturbances of the microbial composition and community structure after ICR and their link with early disease recurrence is crucial. DESIGN Microbiota composition (fingerprinting and 16S rDNA sequencing) and community structure (correlation networks of bacterial species) were assessed from ileal mucosa sampled in 20 patients undergoing ICR and 6 months later during endoscopy from above (neoterminal ileum) and below (subanastomotic colon) the surgical anastomosis. RESULTS ICR had a dramatic effect on gut microbial ecosystem. At surgery, CD mucosa harboured a dysbiotic microbiota with high proportions of α/β Proteobacteria and Bacilli. Six months later, half of the patients had recurrent lesions at ileocolonoscopy and presented higher numbers of Lachnospiraceae. Recurrence of endoscopic lesions was associated with enrichment in Enterococcus durans while patients in remission had increased proportions of Dorea longicatena and Bacteroides plebeius. Structural differences were striking between recurrence and remission microbiota; while the microbiota of patients with CD recurrence exhibited a loose community structure, the microbiota of patients in remission displayed communities that were robustly correlated to each other. Microbiota colonising the neoterminal ileum and subanastomotic colon 6 months after ICR only differed in patients with recurrence. CONCLUSIONS ICR modifies the gut microbiome. Remission after 6 months was associated with homogenous bacterial distribution around the anastomosis. Community structure and bacterial networks highlight target species, including Faecalibacterium prausnitzii and Ruminococcus gnavus, which may allow precise modulations of the overall microbial ecosystem towards remission pattern.
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Affiliation(s)
- S Mondot
- INRA, Micalis UMR1319, Jouy-en-Josas, France,AgroParisTech, Micalis UMR1319, Jouy-en-Josas, France,Institut Curie, U932, Paris, France
| | - P Lepage
- INRA, Micalis UMR1319, Jouy-en-Josas, France,AgroParisTech, Micalis UMR1319, Jouy-en-Josas, France
| | - P Seksik
- Sorbonne Universités—UPMC Univ Paris 06, INSERM ERL 1157, AP-HP, Hôpital Saint Antoine, CNRS UMR 7203 LBM, CHU Saint-Antoine, Paris, France
| | - M Allez
- Gastroenterology Department, Hôpital Saint Louis, APHP, INSERM U1160, Université Paris 7, GETAID, Paris, France
| | - X Tréton
- Gastroenterology Department, Hôpital Beaujon, Clichy, Université Paris 7, GETAID, Paris, France
| | - Y Bouhnik
- Gastroenterology Department, Hôpital Beaujon, Clichy, Université Paris 7, GETAID, Paris, France
| | - J F Colombel
- Department of Gastroenterology, Icahn School of Medicine, New York, New York, USA
| | - M Leclerc
- INRA, Micalis UMR1319, Jouy-en-Josas, France,AgroParisTech, Micalis UMR1319, Jouy-en-Josas, France
| | - P Pochart
- EA Laboratoire de Biologie, Conservatoire national des arts et métiers, Paris, France,EA4065 Université Paris V, Paris, France
| | - J Doré
- INRA, Micalis UMR1319, Jouy-en-Josas, France,AgroParisTech, Micalis UMR1319, Jouy-en-Josas, France
| | - P Marteau
- Gastroenterology Department, Hôpital Lariboisière & Université Denis Diderot—Paris 7, Sorbonne Paris Cité & GETAID, Paris, France
| | - the GETAID
- GETAID, Groupe d'Etude des Traitements des Affections Inflammatoires Digestives, Paris, France
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Pouliot JR, Wakioka M, Ozawa F, Li Y, Leclerc M. Structural Analysis of Poly(3-hexylthiophene) Prepared via Direct Heteroarylation Polymerization. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600050] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jean-Rémi Pouliot
- Département de Chimie; Université Laval; Quebec City Quebec G1V 0A6 Canada
| | - Masayuki Wakioka
- International Research Center for Elements Science (IRCELS); Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS); Institute for Chemical Research; Kyoto University; Uji Kyoto 611-0011 Japan
| | - Yuning Li
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario N2L 3G1 Canada
| | - Mario Leclerc
- Département de Chimie; Université Laval; Quebec City Quebec G1V 0A6 Canada
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43
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Zagdoun E, Lamy T, Buffet A, Leclerc M, Besselièvre T. Hémodiafiltration online : effet sur la qualité du sommeil, le prurit et le syndrome des jambes sans repos. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Affiliation(s)
- Thomas Bura
- Département de Chimie, Université Laval, Quebec City, QC Canada, G1V 0A6
| | | | - Mario Leclerc
- Département de Chimie, Université Laval, Quebec City, QC Canada, G1V 0A6
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45
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Roblin X, Marotte H, Leclerc M, Del Tedesco E, Phelip JM, Peyrin-Biroulet L, Paul S. Combination of C-reactive protein, infliximab trough levels, and stable but not transient antibodies to infliximab are associated with loss of response to infliximab in inflammatory bowel disease. J Crohns Colitis 2015; 9:525-31. [PMID: 25895875 DOI: 10.1093/ecco-jcc/jjv061] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/03/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Antibodies to infliximab [ATI] and trough levels to infliximab [TRI] are associated with loss of response in inflammatory bowel diseases [IBD]. The best way to predict loss of response [LOR] to infliximab [IFX] is unknown. METHODS We conducted a prospective observational cohort study enrolling all IBD patients who were in clinical remission at Week 14 after IFX treatment initiation. TRI, ATI and C-reactive protein [CRP] level were measured at Week 22 [T1] and thereafter at every other IFX infusion. Loss of clinical response was defined by a flare requiring therapeutic change [IFX dose intensification, initiation of another drug class, and/or surgery]. RESULTS A total of 93 patients [59 Crohn's disease, mean duration of follow-up 17.2 months] were included; 32 patients [34.4%] lost clinical response during follow-up. Cumulative probability of LOR was 50% at 20 months. Mean TRI at T1 was significantly lower in IBD patients with stable ATI as compared with those with transient ATI or without ATI [0.052, 3.34 ,and 4.29 µg/ml, respectively; p = 0.001 between no ATI vs stable ATI, and p = 0.005 between stable and transient ATI] [p = 0.0001]. Three independent factors were predictive of LOR after Cox proportional hazards modelling: TRI > 5.5 µg/ml (hazard ratio [HR]: 0.21; 95% confidence interval [CI]: 0.05-0.89;p = 0.034) at T1, CRP > 5mg/l [HR: 2.5; 95% CI: 1.16-5.26; p = 0.019] at T1, and stable ATI defined by two consecutive ATI > 20ng/ml [HR: 3.77; 95% CI: 1.45-10.0; p = 0.007]. Transient ATI did not influence LOR. CONCLUSIONS LOR can be predicted based on a combination of CRP, TRI and stable ATI with a high degree of accuracy.
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Affiliation(s)
- X Roblin
- Department of Gastroenterology, F-42055, CHU Saint Etienne, France
| | - H Marotte
- Department of Rheumatology, F-42055, CHU Saint Etienne, France
| | - M Leclerc
- Department of Gastroenterology, F-42055, CHU Saint Etienne, France
| | - E Del Tedesco
- Department of Gastroenterology, F-42055, CHU Saint Etienne, France
| | - J M Phelip
- Department of Gastroenterology, F-42055, CHU Saint Etienne, France
| | - L Peyrin-Biroulet
- Inserm U954 and Department of Gastroenterology, Université de Lorraine, Nancy, France
| | - S Paul
- Department of Immunology, F-42055, CHU Saint Etienne, France
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46
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Choi H, Ko SJ, Kim T, Morin PO, Walker B, Lee BH, Leclerc M, Kim JY, Heeger AJ. Small-bandgap polymer solar cells with unprecedented short-circuit current density and high fill factor. Adv Mater 2015; 27:3318-3324. [PMID: 25899940 DOI: 10.1002/adma.201501132] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 03/30/2015] [Indexed: 06/04/2023]
Abstract
Small-bandgap polymer solar cells (PSCs) with a thick bulk heterojunction film of 340 nm exhibit high power conversion efficiencies of 9.40% resulting from high short-circuit current density (JSC ) of 20.07 mA cm(-2) and fill factor of 0.70. This remarkable efficiency is attributed to maximized light absorption by the thick active layer and minimized recombination by the optimized lateral and vertical morphology through the processing additive.
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Affiliation(s)
- Hyosung Choi
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, 133-791, South Korea
| | - Seo-Jin Ko
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
| | - Taehyo Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
| | | | - Bright Walker
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
| | - Byoung Hoon Lee
- Center for Polymers and Organic Solids, University of California Santa Barbara (UCSB), Santa Barbara, CA, 93106, USA
| | - Mario Leclerc
- Department of Chemistry, Laval University, Quebec City, QC, G1V 0A6, Canada
| | - Jin Young Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
| | - Alan J Heeger
- Center for Polymers and Organic Solids, University of California Santa Barbara (UCSB), Santa Barbara, CA, 93106, USA
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47
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Aluicio-Sarduy E, Singh R, Kan Z, Ye T, Baidak A, Calloni A, Berti G, Duò L, Iosifidis A, Beaupré S, Leclerc M, Butt HJ, Floudas G, Keivanidis PE. Elucidating the impact of molecular packing and device architecture on the performance of nanostructured perylene diimide solar cells. ACS Appl Mater Interfaces 2015; 7:8687-8698. [PMID: 25822414 DOI: 10.1021/acsami.5b00827] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
UNLABELLED The performance of organic photovoltaic devices (OPV) with nanostructured polymer:perylene diimide (PDI) photoactive layers approaches the levels of the corresponding polymer:fullerene systems. Nevertheless, a coherent understanding of the difficulty for PDI-based OPV devices to deliver high power conversion efficiencies remains elusive. Here we perform a comparative study of a set of four different polymer:PDI OPV model systems. The different device performances observed are attributed to differences in the nanostructural motif of these composites, as determined by wide-angle X-ray scattering (WAXS) measurements. Long-range structural order in the PDI domain dictates (i) the stabilization energy and (ii) the concentration of the PDI excimers in the composites. The quenching of the PDI excimer photoluminescence (PL) is found to be insensitive to the former, but it depends on the latter. High PL quenching occurs for the low concentration of PDI excimers that are formed in PDI columns with a length comparable to the PDI excimer diffusion length. The stabilization of the PDI excimer state increases as the long-range order in the PDI domains improves. The structural order of the PDI domains primarily affects charge transport. Electron mobility reduces as the size of the PDI domain increases, suggesting that well-ordered PDI domains suffer from poor electronic connectivity. WAXS further reveals the presence of additional intermolecular PDI interactions, other than the direct face-to-face intermolecular coupling, that introduce a substantial energetic disorder in the polymer:PDI composites. Conventional device architectures with hole-collecting ITO/PEDOT:PSS bottom electrodes are compared with inverted device architectures bearing bottom electron-collecting electrodes of ITO/ZnO. In all cases the ZnO-functionalized devices surpass the performance of the conventional device analogues. X-ray photoelectron spectroscopy explains that in PEDOT PSS-functionalized devices, the PDI component preferentially segregates closer to the hydrophilic PEDOT PSS electrode, thus impeding the efficient charge extraction and limiting device photocurrent.
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Affiliation(s)
- Eduardo Aluicio-Sarduy
- †Fondazione Istituto Italiano di Tecnologia, Centre for Nanoscience and Technology@PoliMi, Via Giovanni Pascoli 70/3, 20133 Milano, Italy
| | - Ranbir Singh
- †Fondazione Istituto Italiano di Tecnologia, Centre for Nanoscience and Technology@PoliMi, Via Giovanni Pascoli 70/3, 20133 Milano, Italy
| | - Zhipeng Kan
- †Fondazione Istituto Italiano di Tecnologia, Centre for Nanoscience and Technology@PoliMi, Via Giovanni Pascoli 70/3, 20133 Milano, Italy
| | - Tengling Ye
- †Fondazione Istituto Italiano di Tecnologia, Centre for Nanoscience and Technology@PoliMi, Via Giovanni Pascoli 70/3, 20133 Milano, Italy
| | - Aliaksandr Baidak
- †Fondazione Istituto Italiano di Tecnologia, Centre for Nanoscience and Technology@PoliMi, Via Giovanni Pascoli 70/3, 20133 Milano, Italy
| | - Alberto Calloni
- ‡Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Giulia Berti
- ‡Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Lamberto Duò
- ‡Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | | | - Serge Beaupré
- §Département de Chimie, Université Laval, Pavillon A-Vachon 1045, Avenue de la Médecine, Québec City, Québec, Canada G1 V 0A6
| | - Mario Leclerc
- §Département de Chimie, Université Laval, Pavillon A-Vachon 1045, Avenue de la Médecine, Québec City, Québec, Canada G1 V 0A6
| | - Hans-Jürgen Butt
- ∥Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128, Mainz, Germany
| | - George Floudas
- ⊥University of Ioannina, Department of Physics, 451 10 Ioannina, Greece
| | - Panagiotis E Keivanidis
- #Cyprus University of Technology, Department of Mechanical Engineering and Materials Science and Engineering, Dorothea Bldg 511, 45 Kitiou Kyprianou Street, 3041 Limassol, Cyprus
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Reisner SL, Vetters R, Leclerc M, Zaslow S, Wolfrum S, Shumer D, Mimiaga MJ. Mental health of transgender youth in care at an adolescent urban community health center: a matched retrospective cohort study. J Adolesc Health 2015; 56:274-9. [PMID: 25577670 PMCID: PMC4339405 DOI: 10.1016/j.jadohealth.2014.10.264] [Citation(s) in RCA: 341] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/08/2014] [Accepted: 10/10/2014] [Indexed: 11/26/2022]
Abstract
PURPOSE Transgender youth represent a vulnerable population at risk for negative mental health outcomes including depression, anxiety, self-harm, and suicidality. Limited data exist to compare the mental health of transgender adolescents and emerging adults to cisgender youth accessing community-based clinical services; the present study aimed to fill this gap. METHODS A retrospective cohort study of electronic health record data from 180 transgender patients aged 12-29 years seen between 2002 and 2011 at a Boston-based community health center was performed. The 106 female-to-male (FTM) and 74 male-to-female (MTF) patients were matched on gender identity, age, visit date, and race/ethnicity to cisgender controls. Mental health outcomes were extracted and analyzed using conditional logistic regression models. Logistic regression models compared FTM with MTF youth on mental health outcomes. RESULTS The sample (N = 360) had a mean age of 19.6 years (standard deviation, 3.0); 43% white, 33% racial/ethnic minority, and 24% race/ethnicity unknown. Compared with cisgender matched controls, transgender youth had a twofold to threefold increased risk of depression, anxiety disorder, suicidal ideation, suicide attempt, self-harm without lethal intent, and both inpatient and outpatient mental health treatment (all p < .05). No statistically significant differences in mental health outcomes were observed comparing FTM and MTF patients, adjusting for age, race/ethnicity, and hormone use. CONCLUSIONS Transgender youth were found to have a disparity in negative mental health outcomes compared with cisgender youth, with equally high burden in FTM and MTF patients. Identifying gender identity differences in clinical settings and providing appropriate services and supports are important steps in addressing this disparity.
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Affiliation(s)
- Sari L. Reisner
- Department of Epidemiology, Harvard School of Public Health, Boston, MA,The Fenway Institute, Fenway Health, Boston, MA
| | | | - M Leclerc
- Boston University School of Public Health, Boston, MA
| | | | | | - Daniel Shumer
- Division of Endocrinology, Boston Children’s Hospital, Boston, MA
| | - Matthew J. Mimiaga
- Department of Epidemiology, Harvard School of Public Health, Boston, MA,The Fenway Institute, Fenway Health, Boston, MA,Department of Psychiatry, Harvard Medical School, Boston, MA
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Tournebize A, Gardette JL, Taviot-Guého C, Bégué D, Arnaud MA, Dagron-Lartigau C, Medlej H, Hiorns RC, Beaupré S, Leclerc M, Rivaton A. Is there a photostable conjugated polymer for efficient solar cells? Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2014.12.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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50
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Niklas J, Beaupré S, Leclerc M, Xu T, Yu L, Sperlich A, Dyakonov V, Poluektov OG. Photoinduced Dynamics of Charge Separation: From Photosynthesis to Polymer–Fullerene Bulk Heterojunctions. J Phys Chem B 2015; 119:7407-16. [DOI: 10.1021/jp511021v] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jens Niklas
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Serge Beaupré
- Department
of Chemistry, Laval University, Quebec City, Quebec G1V 0A6, Canada
| | - Mario Leclerc
- Department
of Chemistry, Laval University, Quebec City, Quebec G1V 0A6, Canada
| | - Tao Xu
- Department
of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Luping Yu
- Department
of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Andreas Sperlich
- University of Würzburg and Bavarian Centre for Applied Energy
Research (ZAE Bayern), D-97074 Würzburg, Germany
| | - Vladimir Dyakonov
- University of Würzburg and Bavarian Centre for Applied Energy
Research (ZAE Bayern), D-97074 Würzburg, Germany
| | - Oleg G. Poluektov
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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