Amorphous Carbon Films with Embedded Well-Dispersed Nanodiamonds: Plasmon-Enhanced Analysis and Possible Antimicrobial Applications

Streletskiy, Oleg A.; Perevedentseva, E.; Zavidovskiy, Ilya A.; Karmenyan, Artashes; Sychev, V. V.; Садыкова, В. С.; Куварина, А. Е.; Cheng, Chia‐Liang

doi:10.3390/magnetochemistry8120171

Cited by 9 publications

(9 citation statements)

References 96 publications

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“…Its asymmetric shape shows the contribution of both of these lines to the spectra in the 1520-1560 cm −1 range. The plateau between ν 1 and ν 2 is centered at ~1315 cm −1 , which is somewhat lower than expected for an amorphous-carbon-related D-line located in the 1320-1360 cm −1 range [48]. We suggest that the relatively low wavelength and significant width of this "line" are attributed to the contribution of cis-isomeric C-C fragments (indicated as cis-ν 1 ), which is similar to the Raman spectra of polyene-polyynes reported in [18].…”

Section: Raman Spectroscopymentioning

confidence: 56%

“…As shown in Section 3.2, the C=C and C-H line positions in the FTIR spectrum indicate that the samples have predominantly chained structure, allowing us to suggest that a graphitized-carbon-related G-line pro- The narrow peak at ~1160 cm −1 is attributed to the C-C bonds of trans-isomeric polyenic structures [46] and will be subsequently referred to as ν 1 . The most intensive narrow peak at 1540 cm −1 is typical for C=C vibrations and can be observed both in polyenes [47] (will be referred to as ν 2 ) and in disordered carbon [48] (G-line). Its asymmetric shape shows the contribution of both of these lines to the spectra in the 1520-1560 cm −1 range.…”

Section: Raman Spectroscopymentioning

confidence: 99%

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The Field-Effect Transistor Based on a Polyyne–Polyene Structure Obtained via PVDC Dehydrochlorination

et al. 2023

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We report on the formation of the field-effect transistor based on a polyyne–polyene structure. Polyvinylidene chloride (PVDC) drop casting and its subsequent dehydrochlorination in KOH solution allowed for the formation of porous polyyne–polyene material, which was analyzed via transmission electron microscopy, Fourier-transform infrared spectroscopy, and Raman spectroscopy, revealing the presence of sp- and sp2-hybridized chained fragments in the structure. The polyyne–polyene-based field-effect transistor showed a transconductance of 3.2 nA/V and a threshold voltage of −0.3 V. The obtained results indicate that polyyne–polyene-based transistors can be used as discrete elements of molecular electronics and that subsequent studies can be aimed toward the development of selective polyyne–polyene-based gas sensors with tunable sensitivity.

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Section: Raman Spectroscopymentioning

confidence: 56%

Section: Raman Spectroscopymentioning

confidence: 99%

The Field-Effect Transistor Based on a Polyyne–Polyene Structure Obtained via PVDC Dehydrochlorination

et al. 2023

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“…The D- and G-bands represent the defective and graphitic sp 2 hybridized carbon, respectively [ 18 ]. According to previous research, the D- and G-bands of amorphous carbon are located in the broad spectral range of 1320–1360 cm −1 and 1520–1600 cm −1 , respectively [ 19 ]. The intensity ratios of D- and G-bands ( I D / I G ) in Bi@C, Bi 3 Sb 1 @C, Bi 1 Sb 1 @C, Bi 2 Sb 3 @C, Bi 1 Sb 3 @C, and Sb@C are calculated as 1.59, 1.82, 1.82, 1.89, 1.82, and 1.77, respectively.…”

Section: Resultsmentioning

confidence: 99%

Bismuth−Antimony Alloy Embedded in Carbon Matrix for Ultra-Stable Sodium Storage

Tan

et al. 2023

Materials

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Alloy-type anodes are the most promising candidates for sodium-ion batteries (SIBs) due to their impressive Na storage capacity and suitable voltage platform. However, the implementation of alloy-type anodes is significantly hindered by their huge volume expansion during the alloying/dealloying processes, which leads to their pulverization and detachment from current collectors for active materials and the unsatisfactory cycling performance. In this work, bimetallic Bi−Sb solid solutions in a porous carbon matrix are synthesized by a pyrolysis method as anode material for SIBs. Adjustable alloy composition, the introduction of porous carbon matrix, and nanosized bimetallic particles effectively suppress the volume change during cycling and accelerate the electrons/ions transport kinetics. The optimized Bi1Sb1@C electrode exhibits an excellent electrochemical performance with an ultralong cycle life (167.2 mAh g−1 at 1 A g−1 over 8000 cycles). In situ X-ray diffraction investigation is conducted to reveal the reversible and synchronous sodium storage pathway of the Bi1Sb1@C electrode: (Bi,Sb) Na(Bi,Sb) Na3(Bi,Sb). Furthermore, online electrochemical mass spectrometry unveils the evolution of gas products of the Bi1Sb1@C electrode during the cell operation.

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“…The D mode is attributed to the breathing modes of the sp 2 sites in rings. The elementary spectrum of peak D is slightly shifted towards higher values of cm −1[47]. We think an additional vibrational mode between peaks D and G, which was not considered when fitting the spectrum, may be responsible for this.…”

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confidence: 89%

The Amorphous Carbon Thin Films Synthesized by Gas Injection Magnetron Sputtering Technique in Various Gas Atmospheres

et al. 2023

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This work presents the potential for using pulsed gas injection to produce amorphous carbon films. In this experiment, the frequency of injecting small amounts of gas was used to control the pressure amplitudes, thus achieving the conditions of plasma generation from stationary, through quasi-stationary, to pulsed oscillations of pressure. In addition, we used various gases and their mixtures, an alternative to argon. In the experiment, we studied the energy state of the plasma. The films were examined for phase and chemical composition, surface morphology, and optical and mechanical properties. We determined low-frequency pulsed gas injections to be conditions favorable for C(sp3) − C(sp3) bond formation. The plasma generated by gas injections is better ionized than that generated by static pressure. Pulsed conditions favor the plasma species to retain their kinetic energy, limiting the probability of intermolecular collision events. Since helium has a relatively high ionization energy, it is a practical addition to sputtering gas because of the increasing sp3 content in the films. The electrons created by helium ionization improve the plasma’s ionization degree.

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Amorphous Carbon Films with Embedded Well-Dispersed Nanodiamonds: Plasmon-Enhanced Analysis and Possible Antimicrobial Applications

Cited by 9 publications

References 96 publications

The Field-Effect Transistor Based on a Polyyne–Polyene Structure Obtained via PVDC Dehydrochlorination

The Field-Effect Transistor Based on a Polyyne–Polyene Structure Obtained via PVDC Dehydrochlorination

Bismuth−Antimony Alloy Embedded in Carbon Matrix for Ultra-Stable Sodium Storage

The Amorphous Carbon Thin Films Synthesized by Gas Injection Magnetron Sputtering Technique in Various Gas Atmospheres

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