Vanadium-Incorporated MCM-48 Materials:  Optimization of the Synthesis Procedure and an in Situ Spectroscopic Study of the Vanadium Species

2001 ◽  
Vol 105 (17) ◽  
pp. 3393-3399 ◽  
Author(s):  
M. Mathieu ◽  
P. Van Der Voort ◽  
B. M. Weckhuysen ◽  
R. R. Rao ◽  
G. Catana ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Synthesis Procedure ◽  
Vanadium Species

Epitaxy and texture analysis of Bi-Sr-Ca-Cu-O thin films on (100) MgO using Transmission Electron Microscopy

1990 ◽  
Vol 48 (4) ◽  
pp. 68-69
Author(s):  
J. T. Sizemore ◽  
D. G. Schlom ◽  
Z. J. Chen ◽  
J. N. Eckstein ◽  
I. Bozovic ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Transmission Electron Microscopy ◽  
Critical Currents ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Cell Axis ◽  
Transmission Electron ◽  
Synthesis Procedure

Investigators observe large critical currents for superconducting thin films deposited epitaxially on single crystal substrates. The orientation of these films is often characterized by specifying the unit cell axis that is perpendicular to the substrate. This omits specifying the orientation of the other unit cell axes and grain boundary angles between grains of the thin film. Misorientation between grains of YBa2Cu3O7−δ decreases the critical current, even in those films that are c axis oriented. We presume that these results are similar for bismuth based superconductors and report the epitaxial orientations and textures observed in such films.Thin films of nominally Bi2Sr2CaCu2Ox were deposited on MgO using molecular beam epitaxy (MBE). These films were in situ grown (during growth oxygen was incorporated and the films were not oxygen post-annealed) and shuttering was used to encourage c axis growth. Other papers report the details of the synthesis procedure. The films were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM).

A Mild and Simple Method for Making MIDA Boronates

2020 ◽  
Author(s):  
Aidan Kelly ◽  
Peng-Jui (Ruby) Chen ◽  
Jenna Klubnick ◽  
Daniel J. Blair ◽  
Martin D. Burke
Keyword(s):  
Organic Synthesis ◽  
Boronic Acids ◽  
Simple Method ◽  
Direct Preparation ◽  
Synthesis Procedure ◽  
Harsh Conditions

<div> <div> <div> <p>Existing methods for making MIDA boronates require harsh conditions and complex procedures to achieve dehydration. Here we disclose that a pre-dried form of MIDA, MIDA anhydride, acts as both a source of the MIDA ligand and an in situ desiccant to enable a mild and simple MIDA boronate synthesis procedure. This method expands the range of sensitive boronic acids that can be converted into their MIDA boronate counterparts. Further utilizing unique properties of MIDA boronates, we have developed a MIDA Boronate Maker Kit which enables the direct preparation and purification of MIDA boronates from boronic acids using only heating and centrifuge equipment that is widely available in labs that do not specialize in organic synthesis. </p> </div> </div> </div>

In Situ Spectroscopic Study of Water at the Asphalt/Siliceous Substrate Interface and Its Implication in Stripping

2005 ◽  
Vol 81 (1) ◽  
pp. 1-28 ◽  
Author(s):  
Tinh Nguyen ◽  
Eric W. Byrd ◽  
Dale Bentz ◽  
Jon Martin
Keyword(s):  
Spectroscopic Study ◽  
Substrate Interface

In-situ infrared reflectance spectroscopic study of propanediol electrooxidation at platinum and gold

1999 ◽  
Vol 463 (1) ◽  
pp. 63-71 ◽  
Author(s):  
M.El M Chbihi ◽  
D Takky ◽  
F Hahn ◽  
H Huser ◽  
J.M Léger ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Infrared Reflectance
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