High-pressure CO2-enhanced polymer interdiffusion and dissolution studied with in situ ATR-FTIR spectroscopic imaging

Polymer ◽  
2006 ◽  
Vol 47 (13) ◽  
pp. 4649-4658 ◽  
Author(s):  
Oliver S. Fleming ◽  
K.L. Andrew Chan ◽  
Sergei G. Kazarian
Keyword(s):  
High Pressure ◽  
Spectroscopic Imaging ◽  
High Pressure Co2 ◽  
Polymer Interdiffusion

scholarly journals Self-Assembly of 1D Double-Chain and 3D Diamondoid Networks of Lanthanide Coordination Polymers through In Situ-Generated Ligands: High-Pressure CO2 Adsorption and Photoluminescence Properties

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4428
Author(s):  
Chatphorn Theppitak ◽  
Suwadee Jiajaroen ◽  
Nucharee Chongboriboon ◽  
Songwuit Chanthee ◽  
Filip Kielar ◽  
...  
Keyword(s):  
High Pressure ◽  
Coordination Polymers ◽  
Self Assembly ◽  
Chain Structure ◽  
Double Chain ◽  
Hydrothermal Conditions ◽  
3D Network ◽  
High Pressure Co2 ◽  
Secondary Building Units

Two new lanthanide-based coordination polymers, [Sm2(bzz)(ben)6(H2O)3]·0.5H2O (1) and [Eu(bbz)(ben)3] (2), were synthesized and characterized. The described products were formed from in situ-generated benzoate (ben) and N’-benzoylbenzohydrazide (bbz) ligands, which were the products of transformation of originally added benzhydrazide (bzz) under hydrothermal conditions. Compound 1 exhibits a one-dimensional (1D) double-chain structure built up from the connection of the central Sm3+ ions with a mixture of bzz and ben ligands. On the other hand, 2 features a 3D network with a 4-connected (66) dia topology constructed from dinuclear [Eu2(ben)6] secondary building units and bbz linkers. High-pressure CO2 sorption studies of activated 1 show that maximum uptake increases to exceptionally high values of 376.7 cm3 g−1 (42.5 wt%) under a pressure of 50 bar at 298 K with good recyclability. Meanwhile, 2 shows a typical red emission in the solid state at room temperature with the decay lifetime of 1.2 ms.

D006 An environmental stage for in-situ studies of biopolymers in high pressure CO2

2006 ◽  
Vol 21 (2) ◽  
pp. 171-171
Author(s):  
V. Nawaby ◽  
P. Whitfield ◽  
X. Liao
Keyword(s):  
High Pressure ◽  
In Situ Studies ◽  
High Pressure Co2

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

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