Editorial [Hot topic: Electron Transfer, Hydrogen and Peptide Bonds (Guest Editor: Petar M. Mitrasinovic)]

Mitrasinovic, Petar M.

doi:10.2174/138527210790069875

Cited by 5 publications

(7 citation statements)

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“…Fifteen bands in this spectrum are assigned to C 60 including two nondegenerate A g modes (near 495 and 1467 cm −1 ) and eight 5-fold degenerate H g modes (near 269, 428, 708, 772, 1100, 1250, 1423, and 1572 cm −1 ). 42,48 The remaining four bands are assigned as combination modes, the [H g (4) − H g (2)] at 350 cm −1 , the [G g (3) + H g (1)] at 1082 cm −1 , the [H g (2) + H g (6)] at 571 cm −1 , and one additional F 1u band at 533 cm −1 which is not normally Raman active. Several of these modes appear as overlapping doublets in the spectrum due to activation of normally Raman-inactive modes due to the broken symmetry caused by the presence of 13 C. 48 The frequencies of all bands observed are consistent with those reported previously for C 60 films, demonstrating that no reaction chemistry occurs between C 60 and the underlying Ag substrate.…”

Section: Resultsmentioning

confidence: 99%

Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al

Matz

Ratcliff

Meyer

et al. 2013

ACS Appl. Mater. Interfaces

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The formation of interfacial midgap states due to the reduction of buckminsterfullerene (C60) to amorphous carbon upon subsequent vapor deposition of Al is confirmed using Raman spectroscopy and X-ray, ultraviolet, and inverse photoemission spectroscopies. We demonstrate that vapor deposition of Al results in n-type doping of C60 due to an electron transfer from Al to the LUMO of C60, resulting in the formation of midgap states near the C60 Fermi level. Raman spectroscopy in ultrahigh vacuum clearly identifies the presence of the C60 anion radical (C60(•-)) as well as amorphous carbon created by further degradation of C60(•-). In contrast, the interface formed by vapor deposition of Ag shows only a slight Ag/C60 interfacial charge displacement with no evidence for complete metal-to-C60 electron transfer to form the anion radical or its further degradation products. These results confirm previous speculations of metal-induced chemical damage of C60 films after Al deposition, which is widely suspected of decreasing charge collection efficiency in OPVs, and provide key insight into charge collection at metal/organic interfaces in such devices.

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Section: Resultsmentioning

confidence: 99%

Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al

Matz

Ratcliff

Meyer

et al. 2013

ACS Appl. Mater. Interfaces

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“…11,12 Numerous chemical compounds, which did not reach clinical trials belong to the different chemical classes exhibiting different levels of anti-influenza activity in vitro and in vivo, and are directed at different targets in the viral life cycle. 17,18 One of the modern and innovative approaches in the search of new antivirals is an application of available natural compounds or plant metabolites with a new mechanism of antiviral activity. 17,18 One of the modern and innovative approaches in the search of new antivirals is an application of available natural compounds or plant metabolites with a new mechanism of antiviral activity.…”

Section: Introductionmentioning

confidence: 99%

“…38 Analytical and spectral data for compounds 8 and 9 were similar to those synthesized before. 42 Its derivatives (16,17) to be conjugates with methyl esters of L-aspartic acid were described previously. 39,40 tert-Butyl ester groups of protected conjugates 10 and 12 were deleted with 50% CF 3 COOH in DCM and pure compounds 11 and 13 were isolated by CC on SL.…”

Section: Introductionmentioning

confidence: 99%

Glycyrrhizic acid derivatives as influenza A/H1N1 virus inhibitors

Baltina

Zarubaev

Балтина

et al. 2015

Bioorganic & Medicinal Chemistry Letters

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This Letter describes the synthesis and antiviral activity study of some glycyrrhizic acid (GL) derivatives against influenza A/H1N1/pdm09 virus in MDCK cells. Conjugation of GL with l-amino acids or their methyl esters, and amino sugar (d-galactose amine) dramatically changed its activity. The most active compounds were GL conjugates with aromatic amino acids methyl esters (phenylalanine and tyrosine) (SI=61 and 38), and S-benzyl-cysteine (SI=71). Thus modification of GL is a perspective route in the search of new antivirals, and some of GL derivatives are potent as anti-influenza A/H1N1 agents.

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“…The understanding of charge injection barrier is important, because the development of high-efficiency organic (opto-)electronic devices is primarily based on charge injection at the interface between metallic electrodes and organic semiconductors . The energetics of this metal/organic interface play a key role in charge injection, , and there are many models to describe the mechanism. − Models differ because the details of the process depend on the system; however, there are several common themes.…”

Section: Discussionmentioning

confidence: 99%

Simulating Charge Injection and Dynamics in Microscale Organic Field-Effect Transistors

Gagorik

Hutchison

2012

J. Phys. Chem. C

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Monte Carlo simulations were used to investigate the carrier dynamics in realistic, finite-sized, small-molecule, organic field-effect transistors (OFETs) within the first few nanoseconds of device turn-on as well as when the system equilibrates. The results show that the device current exhibits large magnitude oscillations (64 ± 27 nA) during device turn-on if the initial configuration assumed no carriers in the device (i.e., carriers only arrive through injection from the source electrode). After equilibration (125 ns), the current continues to oscillate, however, at lower magnitude (64 ± 2 nA), even if the initial configuration assumed randomly placed charges. Fourier transforms of device current as a function of simulation time show that these oscillations occur at well-defined device geometry-dependent frequencies, independent of initial configuration of the system. Examination of the carrier lifetimes and path lengths, which were found to vary nonlinearly with device length, are used to argue that the oscillations are the result of the charge injection procedure, which assumed a constant probability event. The results suggest that carriers travel in waves in realistically finite-sized devices and that carrier lifetime and path length vary nonlinearly by device geometry. Alternating current studies of OFETs may be useful in confirming these findings.

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Editorial [Hot topic: Electron Transfer, Hydrogen and Peptide Bonds (Guest Editor: Petar M. Mitrasinovic)]

Cited by 5 publications

References 0 publications

Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al

Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al

Glycyrrhizic acid derivatives as influenza A/H1N1 virus inhibitors

Simulating Charge Injection and Dynamics in Microscale Organic Field-Effect Transistors

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Editorial [Hot topic: Electron Transfer, Hydrogen and Peptide Bonds (Guest Editor: Petar M. Mitrasinovic)]

Cited by 5 publications

References 0 publications

Deciphering the Metal-C60 Interface in Optoelectronic Devices: Evidence for C60 Reduction by Vapor Deposited Al

Deciphering the Metal-C60 Interface in Optoelectronic Devices: Evidence for C60 Reduction by Vapor Deposited Al

Glycyrrhizic acid derivatives as influenza A/H1N1 virus inhibitors

Simulating Charge Injection and Dynamics in Microscale Organic Field-Effect Transistors

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Product

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Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al

Deciphering the Metal-C₆₀ Interface in Optoelectronic Devices: Evidence for C₆₀ Reduction by Vapor Deposited Al