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2841“…Functionalization of the sulfide substituent with various electron‐donating and electron‐withdrawing arenes and several alkyl, benzyl and vinyl fragments is tolerated, with up to quantitative product yields. …”
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2842“…In this review, we first discuss the variation of first spheres by tuning ligated atoms; afterward, the structural tuning of second spheres by appending adjacent metal centers, pendant groups, electron withdrawing/donating, and conjugating moieties on the ligands is elaborated. …”
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2843“…The reaction affords the ether product in good‐to‐excellent yields (60–92 %) with broad substrate scope, including heteroaryl and aryl halides bearing electron‐withdrawing, ‐donating and neutral groups. The heterogeneous Ni‐mpg‐CN(x) can be easily recovered from the reaction mixture and reused over multiple cycles without loss of activity. …”
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2844por Handelmann, Jens, Babu, Chatla Naga, Steinert, Henning, Schwarz, Christopher, Scherpf, Thorsten, Kroll, Alexander, Gessner, Viktoria H.“…While electronic changes of the ligand properties by introduction of aryl groups with electron-withdrawing or electron-donating groups had surprisingly little impact on the activity of the gold complexes, the use of bulky aryl groups with ortho-substituents led to a remarkable boost in the catalyst activity. …”
Publicado 2021
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2845por Sun, Ai-Ling, Mu, Wen-Wen, Li, Yan-Mo, Sun, Ya-Lei, Li, Peng-Xiao, Liu, Ren-Min, Yang, Jie, Liu, Guo-Yun“…In this study, we synthesized a panel of PL (piperlongumine) analogs with chlorine attaching at C2 and an electron-withdrawing/electron-donating group attaching to the aromatic ring. The results displayed that the strong electrophilicity group at the C2–C3 double bond of PL analogs plays an important role in the cytotoxicity whereas the electric effect of substituents, which attached to the aromatic ring, partly contributed to the anticancer activity. …”
Publicado 2021
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2846por Dusold, Carolin, Haines, Philipp, Platzer, Benedikt, Guldi, Dirk M., Hirsch, Andreas“…The fully conjugated benzimidazole linker, which separates the electron donating HBC from the electron accepting rylenediimide, enabled the formation of either a linear or a helical configuration. …”
Publicado 2021
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2847“…The introduction of electron‐donating and ‐withdrawing groups results in a significant perturbation of singlet triplet energy splitting of the diaryl carbene intermediate and of activation energies of consecutive carbene transfer reactions. …”
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2848“…By lengthening the polymethine chain, tailoring heterocyclic modification and conjugating electron-donating groups, cyanine dyes have been proved to be ideal NIR-II fluorophores with both tunable emission and brightness. …”
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2849por Mhaidat, Ibrahim, Alwedian, Fadel, Ababneh, Taher, Shdefat, Ayman, Tashtoush, Hasan“…While the emission maxima showed clear dependent on the type of substituents. The electron donating and electron withdrawing showed red and blue shifts relative to the starting compound, respectively. …”
Publicado 2021
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2850“…However, despite its central role in the nitric oxide (NO) story as a NO-donating compound, establishing the precise mechanism of how GTN exerts its medicinal benefit has proven to be far more difficult. …”
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2851por Mateen, Fahad, Lee, Namcheol, Lee, Sae Youn, Taj Ud Din, Syed, Yang, Woochul, Shahzad, Asif, Kaliamurthy, Ashok Kumar, Lee, Jae-Joon, Hong, Sung-Kyu“…As observed experimentally, DACT-II with the charge-donating diphenylaminocarbazole and charge-accepting triphenyltriazine moieties shows a large Stokes shift and limited re-absorption losses in both polymers. …”
Publicado 2021
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2852por Friães, Sofia, Realista, Sara, Gomes, Clara S. B., Martinho, Paulo N., Royo, Beatriz“…Interestingly, complex 4 containing the strongly electron donating di-imidazolylidene ligand exhibited comparable activity to 3, when the experiments were performed in neat acetonitrile at slightly higher overpotential (−1.86 vs. −2.14 V).…”
Publicado 2021
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2853“…Up until now, the possibilities for varying the attached fused heteroaromatics at the coronene core were quite limited, and realizing both electron‐withdrawing and ‐donating rings at the same time was very difficult. …”
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2854“…The tetrel bond in these complexes has been characterized in views of geometries, interaction energies, orbital interactions and topological parameters. The electron-donating group in PTS weakens this interaction and the electron-withdrawing group prominently strengthens it to the point where it exceeds that of the majority of hydrogen bonds. …”
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2855por Söftje, Martin, Weingartz, Thea, Plarre, Rudy, Gjikaj, Mimoza, Namyslo, Jan C., Kaufmann, Dieter E.“…To check the scope and limitations of this modification method, various benzamide derivatives with electron-withdrawing (EWG) or electron-donating (EDG) functional groups in different positions of the aromatic ring were synthesized and applied for covalent modification of Scots pine (Pinus sylvestris L.) sapwood in this study. …”
Publicado 2021
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2856“…The ASDSN compound is a donor–pi–acceptor (D–π–A) conjugated system with amino as electron donating and sulfonyl as electron withdrawing groups. …”
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2857“…Besides, the introduction of the electron-withdrawing substituent (trifluoromethyl) is also a good strategy to catalyze hydrohydrazination, while the electron-donating group (methoxy) is unfavorable.…”
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2858“…However, illite has low bioactivity due to its low solubility and electron-donating ability in aqueous solutions. Therefore, we aimed to develop polyvinylpyrrolidone (PVP)-stabilized illite microparticles (P-lite MPs) via polymer adsorption on illite surfaces. …”
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2859por Maleckaitė, Karolina, Narkevičius, Domantas, Žilėnaitė, Rugilė, Dodonova-Vaitkūnienė, Jelena, Toliautas, Stepas, Tumkevičius, Sigitas, Vyšniauskas, Aurimas“…In this research, we report how electron-withdrawing (EWG) and -donating (EDG) groups can change the spectral and sensory properties of [Formula: see text]-phenyl-substituted BODIPYs. …”
Publicado 2021
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2860“…Using the Classification Tree technique, we find that engaging in one or more PsBs (e.g., donating money or sharing food) enhances SWL and decreases the impact of negative emotions such as pessimism, indecisiveness, and irritability that have emerged during the COVID-19 pandemic. …”
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