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Leclerc M, Beaupré S. Driving organic electronics to new heights. NATURE MATERIALS 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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
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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] [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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Sangachin MH, Brassard S, Leclerc M. Direct Heteroarylation Guidelines for Well-Defined Thiophene-Based Conjugated Molecules. J Org Chem 2023. [PMID: 36758239 DOI: 10.1021/acs.joc.2c02642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Boivin LP, Dupont W, Leclerc M, Gendron D. Biosourced Vanillin-Based Building Blocks for Organic Electronic Materials. J Org Chem 2021; 86:16548-16557. [PMID: 34767376 DOI: 10.1021/acs.joc.1c01869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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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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. THE SCIENCE OF THE TOTAL ENVIRONMENT 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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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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] [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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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 APPLIED MATERIALS & 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] [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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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. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 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] [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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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] [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] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Leclerc M, Zedrosser A, Swenson JE, Pelletier F. Hunters select for behavioral traits in a large carnivore. Sci Rep 2019; 9:12371. [PMID: 31451727 PMCID: PMC6710287 DOI: 10.1038/s41598-019-48853-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 08/12/2019] [Indexed: 11/09/2022] Open
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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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. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807577. [PMID: 30883937 DOI: 10.1002/adma.201807577] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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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 (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804671. [PMID: 30637957 DOI: 10.1002/smll.201804671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/08/2018] [Indexed: 11/11/2022]
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