Piezo-phototronic effect promoted carrier separation in coaxial p-n junctions for self-powered photodetector

Du, Xueyan; Tian, Weiliang; Pan, Jiahui; Hui, Bin; Sun, Jianhua; Zhang, Kewei; Xia, Yanzhi

doi:10.1016/j.nanoen.2021.106694

Cited by 117 publications

(56 citation statements)

References 41 publications

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“…The width of the peak varies universally with the crystallite size. In the X-ray diffraction pattern, the smaller crystallites sizes promote broader peaks in the crystal plane, the higher intensities of the crystalline peaks indicate the larger crystallite size 46 , 47 .…”

Section: Resultsmentioning

confidence: 99%

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Almontasser

Parveen

2022

Sci Rep

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The divalent transition metal ions (Ni, Co, and Fe)-doped MgO nanoparticles were synthesized via the sol–gel method. X-ray diffraction showed the MgO pure, single cubic phase of samples at 600 °C. Field emission electron microscope showed the uniform spherical shape of samples. The magnetic behavior of Ni, Co, Fe-doped MgO system were varied with Ni, Co, Fe content (0.00, 0.01, 0.03, 0.05, 0.07). The magnetic nature of pure had changed from paramagnetic to ferromagnetic. The number of oxygen vacancies increases with increasing amounts of dopant ions that lead to an ionic charge imbalance between Ni2+/Co2+/Fe2+ and Mg2+, leading to increase magnetic properties of the samples. The magnetic nature of prepared samples makes them suitable for biomedical applications. A comparative study of the antibacterial activity of nanoparticles against the Gram-negative (E. coli) and Gram-positive bacteria (S. aureus) was performed by disc diffusion, pour plate techniques, and study surface morphology of untreated and treated bacterial cell wall. An investigation of the antibacterial activity of doped MgO nanoparticles reveals that the doped MgO nanoparticles show effective antibacterial activity against the Gram-negative (E. coli) and Gram-positive (S. aureus) bacterium. The minimum inhibitory concentration of the synthesized nanoparticles against microorganisms was recorded with 40 μg/ml, while the maximum inhibitory concentration was observed with 80 μg/ml. At a concentration of 80 μg/ml, the complete growth inhibition of the E. coli was achieved with 7% Co-doped MgO and 7% Fe-doped MgO, while bacterial growth of S. aureus was inhibited by 100% in the presence of 7% Fe-doped MgO. The present work is promising for using nanomaterials as a novel antibiotic instead of the conventional antibiotics for the treatment of infectious diseases which are caused by tested bacteria.

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Section: Resultsmentioning

confidence: 99%

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Almontasser

Parveen

2022

Sci Rep

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“…Following previous reports on cyclic divalent species, [ 20–28 ] organic compounds and nanostructures, [ 29–45 ] now we compare and contrast new rNHGes ( 1–10 ) by fusion of one benzene, pyrrole, phosphole, furan and thiophene ring in “ ortho ‐ or zigzag” arrangement and “ para ‐ or chair” arrangement to 1 H ‐4‐germapyridine‐4‐ylidene ( 1 ) as the reference germylene.…”

Section: Resultsmentioning

confidence: 99%

The effects of heteroatom substituents on structure, stability, and electronic properties of remote N‐heterocyclic germylenes (rNHGes), at DFT

Cao

Heravi

Habibzadeh

et al. 2022

J of Physical Organic Chem

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In this theoretical research, we have investigated the substituent effect of singlet (s) and triplet (t) rNHGes with the fused various aromatic rings, at (U)B3LYP/AUG‐cc‐pVTZ and (U)M06‐2X/AUG‐cc‐pVTZ. All singlet and triplet rNHGes appear as minima and every singlet germylene displays more thermodynamic stability and more kinetic stability than its corresponding triplet state. Regarding to the relationship among germylenic center (—:GeC— moiety) and the substituted NH, PH, O, and S—heteroatoms, the order of thermodynamic stability based on singlet (s)–triplet (t) energy difference (ΔΕs‐t) and kinetic stability based on band gap (ΔΕHOMO‐LUMO) for the fused rings is ortho‐pyrrole > furan > thiophene > benzene > phosphole in a “zigzag” arrangement. Except for phosphole, every ortho‐heterocycle ring in a “zigzag” arrangement stabilizes rNHGe more than para‐heterocycle ring in a “chair” arrangement. Every triplet rNHGe shows lower frequency, lower polarity, higher nucleophilicity, lower electrophilicity and lower chemical hardness than the corresponding singlet rNHGe. The resonance effect and aromaticity character of the scrutinized rNHGes appears considerably dependent on the electronegativity, size, and topology of the substituted heteroatoms in the fused rings.

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“…The general drawback of nanostructures [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] is their low solubility in solvent phase, which noticeably reduces their processibility. The solubility of buckminsterfullerene has been reported in a broad range of solvent phase, owing to its rigid structure and the lack of permanent dipole moment.…”

Section: Resultsmentioning

confidence: 99%

Solvent effect on cycloaddition of C₂₀ nanofullerene with indoline‐2‐one, at density functional theory

Asnaashariisfahani

Mahmood

Heravi

et al. 2022

J of Physical Organic Chem

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The biologically active (E)-3-(furan-2-yl)methylene-indoline-2-one (I) is studied, in the gas phase, C 6 H 6 , C 2 H 4 Cl 2 , EtOH, MeNO 2 , DMSO, and H 2 O using the self-consistent reaction field (SCRF)-density functional theory (DFT). This species has been used in tumor growth, metastasis, and angiogenesis. A mainly interesting issue is the solvent effect on the stability, geometry, and energy of intermolecular hetero-Diels-Alder cycloaddition of I with C 20 to yield drug delivery (I a ). By optimization of adduct (I a ) from gas phase to nonpolar and then polar solvent, the following results is obtained: (1) The trend of thermodynamic and kinetic stability and also polarity seem proportional to the dielectric constant of the used solvent and formation of the hydrogen bonding.(2) In contrast to general belief that the endo isomer appears more stable than exo isomer, here, the exo isomer appears more stable than endo isomer. (3) The exo cycloaddition can be carried out thermally at room temperature and currently hold responsible for regioselectivity. (4) The possibility of endo cycloaddition is favorable by the lowest energy barrier of 4.2 kcal/mol probed in benzene, while the highest energy barrier of 7.3 kcal/mol is estimated in water.(5) Nonbonding electrostatic interaction between the sulfur heteroatom and nanocage, as well as the π-π aromatic stacking, appears to have significant destabilizing effect on the endo isomer. (6) In going from exo transition state (TS) and endo TS to and I a cycloadduct, the molecular electrostatic potential is changed as a function of shape, size, symmetry, and regioselectivity.

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Piezo-phototronic effect promoted carrier separation in coaxial p-n junctions for self-powered photodetector

Cited by 117 publications

References 41 publications

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

The effects of heteroatom substituents on structure, stability, and electronic properties of remote N‐heterocyclic germylenes (rNHGes), at DFT

Solvent effect on cycloaddition of C₂₀ nanofullerene with indoline‐2‐one, at density functional theory

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Piezo-phototronic effect promoted carrier separation in coaxial p-n junctions for self-powered photodetector

Cited by 117 publications

References 41 publications

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

Probing the effect of Ni, Co and Fe doping concentrations on the antibacterial behaviors of MgO nanoparticles

The effects of heteroatom substituents on structure, stability, and electronic properties of remote N‐heterocyclic germylenes (rNHGes), at DFT

Solvent effect on cycloaddition of C20 nanofullerene with indoline‐2‐one, at density functional theory

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Solvent effect on cycloaddition of C₂₀ nanofullerene with indoline‐2‐one, at density functional theory