On-Surface Synthesis of Carbon-Based Scaffolds and Nanomaterials Using Terminal Alkynes

2015 ◽  
Vol 48 (7) ◽  
pp. 2140-2150 ◽  
Author(s):  
Florian Klappenberger ◽  
Yi-Qi Zhang ◽  
Jonas Björk ◽  
Svetlana Klyatskaya ◽  
Mario Ruben ◽  
...  
Keyword(s):  
Terminal Alkynes ◽  
Carbon Based

SEM Cold Stage Techniques for the Observation of Vegetative and Floral Apices of Oat (Avena sativa L.) Plants

1977 ◽  
Vol 35 ◽  
pp. 590-591
Author(s):  
B. K. Kirchoff ◽  
L.F. Allard ◽  
W.C. Bigelow
Keyword(s):  
Critical Point ◽  
Avena Sativa ◽  
Substantial Improvement ◽  
Fresh Tissue ◽  
Cold Stage ◽  
Critical Point Drying ◽  
Almost All ◽  
Cell Collapse ◽  
Conductive Paint ◽  
Carbon Based

In attempting to use the SEM to investigate the transition from the vegetative to the floral state in oat (Avena sativa L.) it was discovered that the procedures of fixation and critical point drying (CPD), and fresh tissue examination of the specimens gave unsatisfactory results. In most cases, by using these techniques, cells of the tissue were collapsed or otherwise visibly distorted. Figure 1 shows the results of fixation with 4.5% formaldehyde-gluteraldehyde followed by CPD. Almost all cellular detail has been obscured by the resulting shrinkage distortions. The larger cracks seen on the left of the picture may be due to dissection damage, rather than CPD. The results of observation of fresh tissue are seen in Fig. 2. Although there is a substantial improvement over CPD, some cell collapse still occurs.Due to these difficulties, it was decided to experiment with cold stage techniques. The specimens to be observed were dissected out and attached to the sample stub using a carbon based conductive paint in acetone.

Stable production of platform chemicals from the continuous hydrodeoxygenation of a raw bio-oil using enhanced carbon-based catalysts

2020 ◽  
Author(s):  
Idoia Hita ◽  
Tomas Cordero-Lanzac ◽  
Francisco J. Garcia-Mateos ◽  
Jose Rodriguez-Mirasol ◽  
Tomas Cordero ◽  
...  
Keyword(s):  
Platform Chemicals ◽  
Stable Production ◽  
Bio Oil ◽  
Carbon Based

Stable production of platform chemicals from the continuous hydrodeoxygenation of a raw bio-oil using enhanced carbon-based catalysts

2020 ◽  
Author(s):  
Idoia Hita ◽  
Tomas Cordero-Lanzac ◽  
Francisco J. Garcia-Mateos ◽  
Jose Rodriguez-Mirasol ◽  
Tomas Cordero ◽  
...  
Keyword(s):  
Platform Chemicals ◽  
Stable Production ◽  
Bio Oil ◽  
Carbon Based

Directed, Palladium(II)-Catalyzed Enantioselective anti-Carboboration of Alkenyl Carbonyl Compounds

2019 ◽  
Author(s):  
Zhen Liu ◽  
Xiaohan Li ◽  
Tian Zeng ◽  
Keary Engle
Keyword(s):  
Carbonyl Compounds ◽  
Building Blocks ◽  
New Method ◽  
Carbon Based

A substrate-directed enantioselective <i>anti</i>-carboboration reaction of alkenes has been developed, wherein a carbon based nucleophile and a boron moiety are installed across the C=C bond through a 5- or 6-membered palladacycle intermediate. The reaction is promoted by a palladium(II) catalyst and a mondentate oxzazoline ligand. A range of enantioenriched secondary alkylboronate products were obtained with moderate to high enantioselectivity that could be further upgraded by recrystallization. This work represents a new method to synthesize versatile and valuable alkylboronate building blocks. Building on an earlier mechanistic proposal by Peng, He, and Chen, a revised model is proposed to account for the stereoconvergent nature of this transformation.

ELECTROCHEMICAL DEGRADATION OF PHARMACEUTICAL EFFLUENTS ON CARBON-BASED ELECTRODES

2012 ◽  
Vol 11 (3) ◽  
pp. 627-634 ◽  
Author(s):  
Florica Manea ◽  
Sorina Motoc ◽  
Aniela Pop ◽  
Rodica Pode ◽  
Carmen Teodosiu
Keyword(s):  
Electrochemical Degradation ◽  
Carbon Based

Atomic force acoustic microscopy characterization of carbon-based materials

2007 ◽  
Author(s):  
D. Passeri ◽  
A. Bettucci ◽  
M. Germano ◽  
A. Biagioni ◽  
M. Rossi ◽  
...  
Keyword(s):  
Acoustic Microscopy ◽  
Atomic Force ◽  
Microscopy Characterization ◽  
Carbon Based
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