scholarly journals Copper(ii) self-assembled clusters of bis((pyridin-2-yl)-1,2,4-triazol-3-yl)alkanes. Unusual rearrangement of ligands under reaction conditions

2019 ◽  
Vol 48 (9) ◽  
pp. 3052-3060 ◽  
Author(s):  
Alexey Gusev ◽  
Ivan Nemec ◽  
Radovan Herchel ◽  
Victor Shul'gin ◽  
Irina Ryush ◽  
...  
Keyword(s):  
Magnetic Data ◽  
Reaction Conditions ◽  
Unusual Rearrangement ◽  
Self Assembled

Structure and magnetic data of new Cu(ii) complexes on the bispyridyltriazolylalkanes basis are described.

CO2 fixation at atmospheric pressure: porous ZnSnO3 nanocrystals as a highly efficient catalyst for the synthesis of cyclic carbonates

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 31153-31160 ◽  
Author(s):  
Susmita Roy ◽  
Biplab Banerjee ◽  
Asim Bhaumik ◽  
Sk. Manirul Islam
Keyword(s):  
Atmospheric Pressure ◽  
Co2 Fixation ◽  
Cyclic Carbonates ◽  
Reaction Conditions ◽  
Efficient Catalyst ◽  
Zinc Stannate ◽  
Highly Efficient ◽  
Self Assembled

Self-assembled, ultra small, porous zinc stannate nanocrystals have been synthesized, which catalyzes the formation of cyclic carbonates from various epoxide and CO2 under very mild reaction conditions.

scholarly journals Self-Assembled Monolayers of Molybdenum Sulfide Clusters on Au Electrode as Hydrogen Evolution Catalyst for Solar Water Splitting

Inorganics ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 79 ◽  
Author(s):  
Stephanie Spring ◽  
Pravin S. Shinde ◽  
Patricia R. Fontenot ◽  
James P. Donahue ◽  
Shanlin Pan
Keyword(s):  
Hydrogen Evolution ◽  
Photoelectron Spectroscopy ◽  
Molybdenum Sulfide ◽  
Self Assembled Monolayers ◽  
Reaction Conditions ◽  
Catalytic Current ◽  
Au Electrode ◽  
Solar Water Splitting ◽  
Assembled Monolayers ◽  
Self Assembled

Hydrogen evolution reaction (HER) activities of self-assembled monolayers (SAMs) of [Mo3S7(S2CNMe2)3] and several other MoSx molecular clusters are presented on planer Au electrode. Our study suggests that such Mo-S clusters are unstable under HER reaction conditions of a strongly acidic electrolyte. The [Mo3S7(S2CNEt2)3]I monolayer prepared from DMF showed greater stability among all the studied precursors. The X-ray photoelectron spectroscopy (XPS) analysis on a monolayer of [Mo3S7(S2CNMe2)3]I in THF assembled on Au/ITO suggested sulfur-rich composition with S:Mo ratio of 2.278. The Mo-S monolayer clusters resulting from [Mo3S7(S2CNMe2)3]I in THF showed a Tafel slope of 75.74 mV dec−1 and required a lower overpotential of 410 mV to reach a high HER catalytic current density of 100 mA cm−2 compared to the other studied precursors. Surface coverage of the Mo-S clusters on the Au surface was confirmed by cyclic voltammetry (CV) curves from K3Fe(CN)6 and anodization of Au surface. Further, the rotating ring-disk electrode (RRDE) measurements were performed for the monolayer of [Mo3S7(S2CNMe2)3]I prepared in THF to study its reaction kinetics. The HER catalytic activity of such monolayer Mo-S clusters can further be improved by controlling the sulfur vacancy.

Surface-Initiated Polymerization on Self-Assembled Monolayers: Effect of Reaction Conditions

2004 ◽  
Vol 217 (1) ◽  
pp. 223-230 ◽  
Author(s):  
Ursula Schmelmer ◽  
Anne Paul ◽  
Alexander Küller ◽  
Rainer Jordan ◽  
Armin Gölzhäuser ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Reaction Conditions ◽  
Surface Initiated Polymerization ◽  
Assembled Monolayers ◽  
Self Assembled

Undecagold labeling of tRNA

1991 ◽  
Vol 49 ◽  
pp. 44-45
Author(s):  
James F. Hainfeld ◽  
Kyra M. Alford ◽  
Mathias Sprinzl ◽  
Valsan Mandiyan ◽  
Santa J. Tumminia ◽  
...  
Keyword(s):  
High Resolution ◽  
Transmission Electron Micrograph ◽  
Anticodon Loop ◽  
Electron Micrograph ◽  
Reaction Conditions ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

The undecagold (Au11) cluster was used to covalently label tRNA molecules at two specific ribonucleotides, one at position 75, and one at position 32 near the anticodon loop. Two different Au11 derivatives were used, one with a monomaleimide and one with a monoiodacetamide to effect efficient reactions.The first tRNA labeled was yeast tRNAphe which had a 2-thiocytidine (s2C) enzymatically introduced at position 75. This was found to react with the iodoacetamide-Aun derivative (Fig. 1) but not the maleimide-Aun (Fig. 2). Reaction conditions were 37° for 16 hours. Addition of dimethylformamide (DMF) up to 70% made no improvement in the labeling yield. A high resolution scanning transmission electron micrograph (STEM) taken using the darkfield elastically scattered electrons is shown in Fig. 3.

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