Solvent-mediated assembly of chiral/achiral hydrophilic Ca(ii)-tetrafluoroterephthalate coordination frameworks: 3D chiral water aggregation, structural transformation and selective CO2 adsorption

CrystEngComm ◽  
2014 ◽  
Vol 16 (33) ◽  
pp. 7673-7680 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Feng Tian ◽  
Kun-Lin Huang ◽  
Cheng-Peng Li ◽  
Jing Zhong ◽  
...  
Keyword(s):  
Structural Transformation ◽  
Co2 Adsorption ◽  
Carboxylate Ligand ◽  
Coordination Frameworks

Spontaneous reactions of CaII with a fluorinated carboxylate ligand afford chiral/achiral hydrophilic MOF materials.

A 3D MOF showing unprecedented solvent-induced single-crystal-to-single-crystal transformation and excellent CO2 adsorption selectivity at room temperature

2014 ◽  
Vol 50 (100) ◽  
pp. 15886-15889 ◽  
Author(s):  
Tao Qin ◽  
Jun Gong ◽  
Junhan Ma ◽  
Xin Wang ◽  
Yonghua Wang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structural Transformation ◽  
Room Temperature ◽  
Co2 Adsorption ◽  
Adsorption Selectivity ◽  
Crystal Transformation ◽  
Co2 Adsorption Selectivity

A multifunctional MOF material showing rare solvent-induced structural transformation with substitution of bridging-water and guest-exchange at 298 K is reported.

scholarly journals CO2 Adsorption in SIFSIX-14-Cu-i: High Performance, Inflected Isotherms, and Water-Triggered Release via Reversible Structural Transformation

2018 ◽  
Vol 2018 (19) ◽  
pp. 1993-1997 ◽  
Author(s):  
Debobroto Sensharma ◽  
Sebastien Vaesen ◽  
Colm Healy ◽  
Jens Hartmann ◽  
Amal Cherian Kathalikkattil ◽  
...  
Keyword(s):  
Structural Transformation ◽  
High Performance ◽  
Co2 Adsorption ◽  
Triggered Release ◽  
Reversible Structural Transformation

Structural Transformation of ZnII-Dipyridylamide-Based Coordination Frameworks: Hybrid-Ligand and Metal Effects

ChemPlusChem ◽  
2015 ◽  
Vol 80 (5) ◽  
pp. 878-885 ◽  
Author(s):  
Biing-Chiau Tzeng ◽  
Tsung-Yi Chang ◽  
Miao-Hsin Tsai ◽  
Yu-Ting Lin ◽  
Shiu-Feng Lee ◽  
...  
Keyword(s):  
Structural Transformation ◽  
Coordination Frameworks

ZnII-Dipyridylamide-Based Coordination Frameworks: Structural Transformation and Anion Effect

ChemPlusChem ◽  
2013 ◽  
Vol 79 (3) ◽  
pp. 387-393 ◽  
Author(s):  
Biing-Chiau Tzeng ◽  
Chien-Ting Yeh ◽  
Tsung-Yi Chang
Keyword(s):  
Structural Transformation ◽  
Anion Effect ◽  
Coordination Frameworks

Guest dependent reversible single-crystal to single-crystal structural transformation in a flexible Gd(iii)-coordination polymer

2015 ◽  
Vol 2 (4) ◽  
pp. 395-402 ◽  
Author(s):  
Tapan K. Pal ◽  
Dinesh De ◽  
Subhadip Neogi ◽  
Parimal K. Bharadwaj
Keyword(s):  
Coordination Polymer ◽  
Single Crystal ◽  
Structural Transformation ◽  
Carboxylate Ligand ◽  
Crystal Structural ◽  
Carboxylate Shift

We describe a 3D flexible Gd(iii)-coordination polymer, constructed from a linear carboxylate ligand, which shows reversible single-crystal to single-crystal “guest-responsive fitting” of the channels and carboxylate shift process, upon inclusion of aldehyde guests.

The structure of pre-mRNA and mRNA from erythroid cells

1978 ◽  
Vol 36 (2) ◽  
pp. 234-235
Author(s):  
A.-M. Ladhoff ◽  
B.J. Thiele ◽  
Ch. Coutelle ◽  
S. Rosenthal
Keyword(s):  
Bone Marrow ◽  
Structural Transformation ◽  
Electron Micrographs ◽  
Ammonium Acetate ◽  
Bone Marrow Cells ◽  
Erythroid Cells ◽  
Globin Mrna ◽  
Ordered Structures ◽  
Rabbit Bone ◽  
Rabbit Reticulocytes

The suggested precursor-product relationship between the nuclear pre-mRNA and the cytoplasmic mRNA has created increased interest also in the structure of these RNA species. Previously we have been published electron micrographs of individual pre-mRNA molecules from erythroid cells. An intersting observation was the appearance of a contour, probably corresponding to higher ordered structures, on one end of 10 % of the pre-mRNA molecules from erythroid rabbit bone marrow cells (Fig. 1A). A virtual similar contour was observed in molecules of 9S globin mRNA from rabbit reticulocytes (Fig. 1B). A structural transformation in a linear contour occurs if the RNA is heated for 10 min to 90°C in the presence of 80 % formamide. This structural transformation is reversible when the denatured RNA is precipitated and redissolved in 0.2 M ammonium acetate.

Structural Transformation of a Germanium Σ=13 (510) [001] Tilt Grain Boundary under the Electron Beam

1990 ◽  
Vol 48 (1) ◽  
pp. 52-53 ◽  
Author(s):  
Jean-Luc Rouvière ◽  
Alain Bourret
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Grain Boundary ◽  
Structural Transformation ◽  
Mirror Symmetry ◽  
High Resolution Electron Microscopy ◽  
Structural Transformations ◽  
Covalent Bonds ◽  
Resolution Electron ◽  
Tilt Grain Boundary

The possible structural transformations during the sample preparations and the sample observations are important issues in electron microscopy. Several publications of High Resolution Electron Microscopy (HREM) have reported that structural transformations and evaporation of the thin parts of a specimen could happen in the microscope. Diffusion and preferential etchings could also occur during the sample preparation.Here we report a structural transformation of a germanium Σ=13 (510) [001] tilt grain boundary that occurred in a medium-voltage electron microscopy (JEOL 400KV).Among the different (001) tilt grain boundaries whose atomic structures were entirely determined by High Resolution Electron Microscopy (Σ = 5(310), Σ = 13 (320), Σ = 13 (510), Σ = 65 (1130), Σ = 25 (710) and Σ = 41 (910), the Σ = 13 (510) interface is the most interesting. It exhibits two kinds of structures. One of them, the M-structure, has tetracoordinated covalent bonds and is periodic (fig. 1). The other, the U-structure, is also tetracoordinated but is not strictly periodic (fig. 2). It is composed of a periodically repeated constant part that separates variable cores where some atoms can have several stable positions. The M-structure has a mirror glide symmetry. At Scherzer defocus, its HREM images have characteristic groups of three big white dots that are distributed on alternatively facing right and left arcs (fig. 1). The (001) projection of the U-structure has an apparent mirror symmetry, the portions of good coincidence zones (“perfect crystal structure”) regularly separate the variable cores regions (fig. 2).

STRUCTURAL TRANSFORMATION STUDIED BY THERMAL EXPANSION ON SINGLE CRYSTALS V3Si IN NORMAL AND SUPERCONDUCTING STATES

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-406-C6-407 ◽  
Author(s):  
T. Fukase ◽  
T. Kobayashi ◽  
M. Isino ◽  
N. Toyota ◽  
Y. Muto
Keyword(s):  
Thermal Expansion ◽  
Single Crystals ◽  
Structural Transformation
Sign in / Sign up

Export Citation Format

Share Document