Effect Of Substrate On The Structural And Electrical Properties Of Mo Thin Films

Thakur, Mukesh Kumar; Singh, Om Pal; Thakur, Karuna; Parmar, Rahul; Gour, Kuldeep Singh; Muhunthan, N.; Singh, Sandeep Kumar; Singh, Dinesh; Vijayan, N.; Singh, H. K.; Singh, V. N.

doi:10.5185/amlett.2016.5965

Cited by 13 publications

(9 citation statements)

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“…Resistance measurements were performed in-situ with a standard four probe technique [15]. We have used a constant current source to maintain a current of 0.01 mA through the film.…”

Section: (C) Measurement Of Resistancementioning

confidence: 99%

Impact of substrates on the electrical properties of thin chromium films [Online First]

Udachan¹,

Ayachit²,

Udachan³

2019

IyU

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Objective: We studied the impact of substrates on the electrical properties of thin chromium films. Substrates may serve many purposes, such as to define orientation, to conduct electrical current in vertical devices, as a gate in transistors, etc. The thickness range of the chromium films grown on both substrates was (3.5-70) nm. Methods and materials: We used Fuchs-Sondheimer(FS) and Mayadas-Shatzkes(MS) theories to analyze electrical resistivity data for chromium(Cr) films grown on both substrates simultaneously by thermal evaporation in vacuum, under identical deposition conditions. Results and discussion: The infinitely thick film resistivity (ρ0), conduction electron mean free path(l), specularity parameter(p), scattering power of the grain boundary(α') and grain boundary reflection coefficient(R') were found to depend upon the nature of the substrate and the binding force between them and evaporated chromium atoms. The growth and microstructure of the chromium films were examined using atomic force microscopy (AFM) and scanning electron microscopy (SEM). Conclusions: Our experimental data exactly fits with the MS theory in the entire thickness range grown for the chromium films deposited on both the substrates. Examination of film structure by SEM indicated that the films consist of grains of relatively pure chromium of different sizes, and depends upon deposition conditions and parameters, which are important factors that dictate the structural properties of the films.

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“…Resistance measurements were performed in-situ with a standard four probe technique [15]. We have used a constant current source to maintain a current of 0.01 mA through the film.…”

Section: (C) Measurement Of Resistancementioning

confidence: 99%

Impact of substrates on the electrical properties of thin chromium films [Online First]

Udachan¹,

Ayachit²,

Udachan³

2019

IyU

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“…[7] Not surprisingly, the C(3) substituted isoindolines has garnered considerable attention due to the ease of synthesis of a combinatorial library of medicinally important molecules and impressive biological activities they exhibit. [8] For example, the investigational drug pagoclone 3 is a CNS active nonbenzodiazepinoid anxiolytic and an anticonvulsant drug. [9] Batracylin (daniquidone; a isoindoloquinazoline drug) 4 is a promising anticancer drug; it shows antineoplastic activity against murine leukemia P-388 cells.…”

Section: Introductionmentioning

confidence: 99%

Facile and High‐Yielding Synthesis of C(3)‐Aminoisoindolinones Under Metal Catalyst‐Free Conditions

2022

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C(3)-Aminoisoindolinones have attracted the attention of medicinal chemists due to their unique and stable NÀ CÀ N substructure and possibilities for facile and scalable synthesis of combinatorial libraries. We discovered that para-toluenesulfonic acid (PTSA), an organic protic acid, efficiently catalyzes condensation of isoindolinone-3-ols with primary and secondary amines to furnish C(3) N-substituted isoindolinones in high yields. The NÀ C bond formation reaction is highly efficient and experimentally simple. The method replaces known transition metal catalysts involving Cu, Pt, Pd or Au. It works efficiently for both intra-and inter-molecular variants. Furthermore, it is amenable for synthesis of C(3)-aminoisoindolinones with free N(2) via photolytic deprotection of the 2-nitrobenzyl group. We have demonstrated application of the method for synthesis of a variety of medicinally relevant bicyclic and tricyclic C(3)-aminoisoindolinones.

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“…The developed reactions proceed with the intermediacy of N-acyliminium cations, which serve as precursors of highly valuable products: isoindolinones or secondary amides. [34,35] The experimental conditions are exceptionally mild and involve aqueous micellar solutions as the reaction environment and methylene blue as a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Micellar photocatalysis enables divergent C-H arylation and N dealkylation of benzamides via N-acyliminium cations

Cybularczyk‐Cecotka

Predygier

Crespi

et al. 2022

Preprint

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Micellar photocatalysis has recently opened new avenues to activate strong carbon halide bonds. So far, however, it has mainly explored strongly reducing conditions restricting the available chemical space to radical or anionic reactivity. Here, we demonstrate a radical-polar crossover process involving cationic intermediates, which enables chemodivergent modification of chlorinated benzamide derivatives via either C H arylation or N dealkylation. The catalytic system operates under mild conditions employing methylene blue as a photocatalyst and blue LEDs as the light source. Factors determining the reactivity of substrates and preliminary mechanistic studies are presented.

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Effect Of Substrate On The Structural And Electrical Properties Of Mo Thin Films

Cited by 13 publications

References 0 publications

Impact of substrates on the electrical properties of thin chromium films [Online First]

Impact of substrates on the electrical properties of thin chromium films [Online First]

Facile and High‐Yielding Synthesis of C(3)‐Aminoisoindolinones Under Metal Catalyst‐Free Conditions

Micellar photocatalysis enables divergent C-H arylation and N dealkylation of benzamides via N-acyliminium cations

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