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Thematische Bibliographien / Electron donating and electron accepting groups

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Auswahl der wissenschaftlichen Literatur zum Thema „Electron donating and electron accepting groups“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Electron donating and electron accepting groups"

1

Cao, Wei, Kang Wang, Isabelle Ledoux-Rak, and Jianzhuang Jiang. "ABAB-type phthalocyanines simultaneously bearing electron donating and electron accepting groups. Synthesis, spectroscopy, and structure." Inorganic Chemistry Frontiers 3, no. 9 (2016): 1146–51. http://dx.doi.org/10.1039/c6qi00147e.

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Mg(trans-TPTCPc) was successfully prepared and structurally characterized, representing the first structurally characterized ABAB-type phthalocyanine compound simultaneously bearing electron-donating and electron-accepting groups.

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2

Gudimetla, Vittal B., Liqing Ma, Marlena P. Washington, John L. Payton, M. Cather Simpson, and John D. Protasiewicz. "meta-Terphenyl Phosphaalkenes Bearing Electron-Donating and -Accepting Groups." European Journal of Inorganic Chemistry 2010, no. 6 (2010): 854–65. http://dx.doi.org/10.1002/ejic.200900870.

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3

Sugihara, Yoshiaki, Naoto Inai, Masayasu Taki, et al. "Donor–acceptor–acceptor-type near-infrared fluorophores that contain dithienophosphole oxide and boryl groups: effect of the boryl group on the nonradiative decay." Chemical Science 12, no. 18 (2021): 6333–41. http://dx.doi.org/10.1039/d1sc00827g.

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Combination of electron-accepting diarylboryl terminal groups and dithienophosphole oxide spacers with electron-donating triarylamine moieties produces donor–acceptor–acceptor type π-systems, which exhibit emissions in the near-infrared region.

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4

Wierzbicka, Małgorzata, Irena Bylińska, Artur Sikorski, Cezary Czaplewski, and Wiesław Wiczk. "Experimental and theoretical studies of spectroscopic properties of simple symmetrically substituted diphenylbuta-1,3-diyne derivatives." Photochemical & Photobiological Sciences 14, no. 12 (2015): 2251–60. http://dx.doi.org/10.1039/c5pp00150a.

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A series of symmetrically substituted diphenylbuta-1,3-diyne (DPB) derivatives possessing electron-donating or electron-accepting groups have been prepared and studied with emphasis on their spectral and photophysical properties.

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5

Zhang, Luqiong, Li Tian, Ming Li, Rongxing He, and Wei Shen. "A theoretical study on tuning the electronic structures and photophysical properties of newly designed platinum(ii) complexes by adding substituents on functionalized ligands as highly efficient OLED emitters." Dalton Trans. 43, no. 17 (2014): 6500–6512. http://dx.doi.org/10.1039/c3dt53209g.

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6

Setsoafia, Daniel Dodzi Yao, Kiran Sreedhar Ram, Hooman Mehdizadeh-Rad, David Ompong, and Jai Singh. "Density Functional Theory Simulation of Optical and Photovoltaic Properties of DRTB-T Donor-Based Organic Solar Cells." International Journal of Energy Research 2023 (October 19, 2023): 1–12. http://dx.doi.org/10.1155/2023/6696446.

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Using the density functional theory (DFT), the influence of substitution of electron-donating (OCH3 and OH) and electron-accepting (F and Cl) groups on the peripheral thiophene units of DRTB-T donor molecule is studied. By optimizing the geometric structure, HOMO and LUMO energies, reorganization energies, optical properties, and photovoltaic properties are simulated. It is found that the ionization potential of the electron-donating derivatives (DRTB-4OCH3 and DRTB-4OH) reduces, but it increases for the electron-accepting derivatives (DRTB-4F and DRTB-4Cl) in comparison with that of DRTB-T. It is also found that the absorption spectra of the electron-donating derivatives (DRTB-4OCH3 and DRTB-4OH) get redshifted, but these get blue shifted for the electron-accepting derivatives (DRTB-4F and DRTB-4Cl) in comparison with those of DRTB-T. These changes in the electronic and optical properties of the modified structures result in higher PCE in BHJ OSCs with the blended active layer of DRTB-4F: NITI, DRTB-4Cl: NITI, in comparison with that of OSC with the active layer of DRTB-T: NITI and the highest being 15.0% in DRTB-4Cl: NITI. Our results may be expected to provide valuable insights into design optimization, leading to the fabrication of more efficient OSCs.

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7

Yang, Fang-Ling, Ka Lu, Xing Yang, et al. "Computational investigations of intermolecular interactions between electron-accepting bromo- and iodo-pentafluorobenzene and electron-donating furan and thiophene." New Journal of Chemistry 42, no. 24 (2018): 20101–12. http://dx.doi.org/10.1039/c8nj04611e.

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C<sub>6</sub>F<sub>5</sub>X (X = Br, I) exhibits intriguing σ- and π-hole characters, which enable it to accept electrons from the electron-rich atoms or groups in C<sub>4</sub>H<sub>4</sub>O and C<sub>4</sub>H<sub>4</sub>S via various intermolecular interactions.

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8

YUASA, MAKOTO, BEAT STEIGER, and FRED C. ANSON. "Hydroxy-substituted Cobalt Tetraphenylporphyrins as Electrocatalysts for the Reduction of O2." Journal of Porphyrins and Phthalocyanines 01, no. 02 (1997): 181–88. http://dx.doi.org/10.1002/(sici)1099-1409(199704)1:2<181::aid-jpp22>3.0.co;2-r.

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The possible effects of the electron-donating properties of p-hydroxyphenyl groups on the catalytic activity of cobalt porphyrins toward the electro-reduction of O 2 were explored with three cobalt porphyrins having p-hydroxyphenyl substituents in the meso position of the porphyrin ring. The porphyrins were examined as electrocatalysts adsorbed on the surfaces of pyrolytic graphite electrodes in aqueous solution and as homogeneous catalysts dissolved in methanolic solutions. The adsorbed molecules exhibited a higher catalytic activity than those in solution and accomplished the reduction of a portion of the O 2 molecules reaching the electrode to H 2 O . However, the four-electron reduction was indirect, with H 2 O 2 being formed as an intermediate that was subsequently reduced. Although the introduction of the electron-donating p-hydroxyphenyl substituents on the porphyrin ring altered the catalytic activity of the cobalt porphyrins, the effect was not as great as can be obtained by coordinating ruthenium (II) complexes to π-accepting ligands in the meso position of the porphyrin ring.

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9

Juma, Juma Mzume, and Said AH Vuai. "Computational studies of the thermodynamic properties, and global and reactivity descriptors of fluorescein dye derivatives in acetonitrile using density functional theory." Journal of Chemical Research 45, no. 7-8 (2021): 800–805. http://dx.doi.org/10.1177/1747519821994518.

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This work reports density functional theory calculations of the optimized geometries, molecular reactivity, energy gap, and thermodynamic properties of molecular dyes fluorescein (FS), fluorescein attached with methoxy (FSO), fluorescein attached with amine (FSA), fluorescein attached with methane (FSM), fluorescein attached with ethene (FSE), and fluorescein attached with thiophene (FST) using the hybrid functional B3LYP and 6-311G basis sets. When donating groups are attached to the molecular dye, the bond lengths are slightly decreased which is important for easy transfer of electron from donating to the accepting group. For all dyes, highest occupied molecular orbital/lowest occupied molecular orbital analysis results in positive outcomes upon electron injection to semiconductors and subsequent dye regeneration by the electrolyte. The ionization potential increases with increasing conjugation; therefore, the molecular dye attached to thiophene has the highest ionization potential. Meanwhile, a donating group with increased conjugation results in low electron affinity.

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10

Yamaguchi, Isao, та Ryosuke Yamaji. "Synthesis of hydroxyoligophenylenes containing electron-donating, electron-accepting groups, or π-deficient aromatic ring and their solvatochromic behavior". Journal of Physical Organic Chemistry 30, № 10 (2016): e3671. http://dx.doi.org/10.1002/poc.3671.

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