X-ray photoelectron study of trans-influence of the ReRe multiple bond

Nefedov, V. I.; Salyn, Ya. V.; Shtemenko, A. V.; Kotel'nikova, A. S.

doi:10.1016/s0020-1693(00)80090-0

Cited by 22 publications

(14 citation statements)

References 2 publications

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“…1d ) shows unequivocally, that there are two different N environments in the sample. The peak at 400.5 is consistent with other XPS of DMF (possibly coordinated via its oxygen, or perhaps just trapped in the PVDF) 27 . It is therefore reasonable to suggest that the N (1 s) peak at 402.8 eV is due to N coordinated to the Er, the higher binding energy being consistent with electron donation from the N to the Er.…”

Section: Resultssupporting

confidence: 82%

A hybrid strain and thermal energy harvester based on an infra-red sensitive Er3+ modified poly(vinylidene fluoride) ferroelectret structure

Ghosh

Xie

Bowen

et al. 2017

Sci Rep

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In this paper, a novel infra-red (IR) sensitive Er3+ modified poly(vinylidene fluoride) (PVDF) (Er-PVDF) film is developed for converting both mechanical and thermal energies into useful electrical power. The addition of Er3+ to PVDF is shown to improve piezoelectric properties due to the formation of a self-polarized ferroelectric β-phase and the creation of an electret-like porous structure. In addition, we demonstrate that Er3+ acts to enhance heat transfer into the Er-PVDF film due to its excellent infrared absorbance, which, leads to rapid and large temperature fluctuations and improved pyroelectric energy transformation. We demonstrate the potential of this novel material for mechanical energy harvesting by creating a durable ferroelectret energy harvester/nanogenerator (FTNG). The high thermal stability of the β-phase enables the FTNG to harvest large temperature fluctuations (ΔT ~ 24 K). Moreover, the superior mechanosensitivity, SM ~ 3.4 VPa−1 of the FTNG enables the design of a wearable self-powered health-care monitoring system by human-machine integration. The combination of rare-earth ion, Er3+ with the ferroelectricity of PVDF provides a new and robust approach for delivering smart materials and structures for self-powered wireless technologies, sensors and Internet of Things (IoT) devices.

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Section: Resultssupporting

confidence: 82%

A hybrid strain and thermal energy harvester based on an infra-red sensitive Er3+ modified poly(vinylidene fluoride) ferroelectret structure

Ghosh

Xie

Bowen

et al. 2017

Sci Rep

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“…It should also be noted that these types of bonds of halogen atoms are much weaker due to the trans-effect of multiple metal ± metal bonds. Previously, 78,84,85 an analogous phenomenon has been observed experimentally for dinuclear Re and Rh complexes.…”

Section: Binding Energies Of the Core Electrons Of Halogen Atomssupporting

confidence: 72%

“…This is probably due to the formation of cyclic closed p-systems of the type 3. Replacement of the axial ligands in the {[Tc 2 (A-cO) 4 ]Cl n } (n71)7 (n = 1 or 2) anion by Br 7 does not result in considerable changes in the patterns of the binding energy spectra, which indicates a small contribution of AOs of the axial ligands to the d M7M , p M7M and p M7L MOs, since the axial ligands form mainly ionic bonds with the Tc atoms and only due to the transeffect 78,84,85 do they somewhat weaken the s component of the M7M bonds, which is hardly observed in this spectral region.…”

Section: Binding Energy X-ray Photoelectron Spectramentioning

confidence: 98%

Physicochemical properties of technetium acido clusters

Kryutchkov¹

1998

Russ. Chem. Rev.

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The review is concerned with the electronic and molec ular structure and physicochemical properties of all types of technetium clusters with acido ligands described to date. As a typical cluster-forming metal, technetium possesses a number of specific, anomalous cluster-forming properties that can be interpreted in terms of greater capability of outer diffuse 5s(5p) AOs to participate in the formation of additional M7M bonds in technetium acido clusters as compared to analogous clusters of other transition d-elements. Theoretical interpretation of the electronic and molecular structure and properties of technetium clusters has been confirmed by experimental data (X-ray analysis, magnetochemistry, and EPR, optical, X-ray photoelectron and X-ray emission spectroscopy). The experimentally observed increased stability of technetium clusters with odd numbers of `metallic' electrons and a decrease in the effective charge on Tc atoms upon formation of the M7M bonds are discussed. Recently found `anomalous' properties of technetium and rhenium compounds with ferrocenium cations (in particular, unusual low-temperature electron emission on X-ray irradiation) are also considered. The bibliography includes 101 references.

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“…XPS peaks for nitrogen observed at 398.4 eV (N1 s ) and 401.1 eV (NH 4 + ) confirmed the presence of nitrogen atoms in the structure (Supplementary Figs. 10 and 11) 31 . Interestingly, along with the above-mentioned structural features of compound 1 , these (–Cu–S–) n planes with unique arrangements provide an opportunity to examine the electron transfer characteristics of the material.…”

Section: Resultsmentioning

confidence: 97%

Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity

et al. 2019

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Designing highly conducting metal–organic frameworks (MOFs) is currently a subject of great interest for their potential applications in diverse areas encompassing energy storage and generation. Herein, a strategic design in which a metal–sulfur plane is integrated within a MOF to achieve high electrical conductivity, is successfully demonstrated. The MOF {[Cu 2 (6-Hmna)(6-mn)]·NH 4 } n ( 1 , 6-Hmna = 6-mercaptonicotinic acid, 6-mn = 6-mercaptonicotinate), consisting of a two dimensional (–Cu–S–) n plane, is synthesized from the reaction of Cu(NO 3 ) 2 , and 6,6′-dithiodinicotinic acid via the in situ cleavage of an S–S bond under hydrothermal conditions. A single crystal of the MOF is found to have a low activation energy (6 meV), small bandgap (1.34 eV) and a highest electrical conductivity (10.96 S cm −1 ) among MOFs for single crystal measurements. This approach provides an ideal roadmap for producing highly conductive MOFs with great potential for applications in batteries, thermoelectric, supercapacitors and related areas.

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X-ray photoelectron study of trans-influence of the ReRe multiple bond

Cited by 22 publications

References 2 publications

A hybrid strain and thermal energy harvester based on an infra-red sensitive Er3+ modified poly(vinylidene fluoride) ferroelectret structure

A hybrid strain and thermal energy harvester based on an infra-red sensitive Er3+ modified poly(vinylidene fluoride) ferroelectret structure

Physicochemical properties of technetium acido clusters

Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity

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