Synthesis and structural characterization of a new self-assembled disulfide linked meso-tetrakis-porphyrin macromolecular array

2008 ◽  
Vol 12 (07) ◽  
pp. 845-848 ◽  
Author(s):  
Abilio J. F. N. Sobral ◽  
Licinia L. G. Justino ◽  
Ana C. C. Santos ◽  
Joana A. Silva ◽  
Cláudia T. Arranja ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Disulfide Bonds ◽  
Metal Coordination ◽  
Intermolecular Hydrogen Bonds ◽  
Coordination Bonding ◽  
Self Assembled

The synthesis of a new self-assembled porphyrin macrostructure based on disulfide bonds, is presented. This constitutes a new way to directly connect porphyrins in macromolecular arrays, to complement the usual methods of intermolecular hydrogen bonds and metal coordination bonding.

scholarly journals Structural characterization of self-assembled quantum dot structures by X-ray diffraction techniques

1997 ◽  
Vol 306 (2) ◽  
pp. 198-204 ◽  
Author(s):  
A.A. Darhuber ◽  
J. Stangl ◽  
V. Holy ◽  
G. Bauer ◽  
A. Krost ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Structural Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Self Assembled

4-(Piperidin-1-yl)pyridinium hexafluorophosphate at 150 K

2003 ◽  
Vol 59 (11) ◽  
pp. o622-o624 ◽  
Author(s):  
Bruce D. James ◽  
Siti Mutrofin ◽  
Brian W. Skelton ◽  
Allan H. White
Keyword(s):  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Title Compound ◽  
Ion Pairs ◽  
Piperidine Ring ◽  
Torsion Angles ◽  
Compound C ◽  
Counter Ions

Structural characterization of the title compound, C10H15N2 +·PF6 −, shows it to be ionic, with the pyridine rather than the piperidine N atom being protonated and forming hydrogen bonds to the counter-ions, resulting in two independent ion pairs. A number of unusual features are noted, in particular the remarkably close inter-ring hydrogen contacts [1.97 (3)–2.00 (3) Å] and the considerable differences in the pair of cations, in respect of the torsion angles within the piperidine ring involving the bonds to either side of the N atom.

Solvothermal Synthesis and Structural Characterization of Ultralight Metal Coordination Networks

2010 ◽  
Vol 10 (2) ◽  
pp. 709-715 ◽  
Author(s):  
Debasis Banerjee ◽  
Sun Jin Kim ◽  
Lauren A. Borkowski ◽  
Wenqian Xu ◽  
John B. Parise
Keyword(s):  
Structural Characterization ◽  
Solvothermal Synthesis ◽  
Metal Coordination ◽  
Coordination Networks

Structural Characterization of Self-Assembled Multifunctional Binary Nanoparticle Superlattices

2006 ◽  
Vol 128 (11) ◽  
pp. 3620-3637 ◽  
Author(s):  
Elena V. Shevchenko ◽  
Dmitri V. Talapin ◽  
Christopher B. Murray ◽  
Stephen O'Brien
Keyword(s):  
Structural Characterization ◽  
Self Assembled ◽  
Nanoparticle Superlattices

Synthesis, crystallization, X-ray structural characterization and solid-state assembly of a cyclic hexapeptoid with propargyl and methoxyethyl side chains

2017 ◽  
Vol 73 (3) ◽  
pp. 399-412 ◽  
Author(s):  
Consiglia Tedesco ◽  
Eleonora Macedi ◽  
Alessandra Meli ◽  
Giovanni Pierri ◽  
Giorgio Della Sala ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Crystal Form ◽  
Side Chains ◽  
Crystal Forms ◽  
Hydrate Crystal ◽  
The Stability ◽  
Efficient Packing

The synthesis and the structural characterization of a cyclic hexapeptoid with four methoxyethyl and two propargyl side chains have disclosed the presence of a hydrate crystal form [form (I)] and an anhydrous crystal form [form (II)]. The relative amounts of form (I) and form (II) in the as-purified product were determined by Rietveld refinement and depend on the purification procedures. In crystal form (I), peptoid molecules assemble in a columnar arrangement by means of side-chain-to-backbone C=CH...OC hydrogen bonds. In the anhydrous crystal form (II), cyclopeptoid molecules form ribbons by means of backbone-to-backbone CH2...OC hydrogen bonds, thus mimicking β-sheet secondary structures in proteins. In both crystal forms side chains act as joints among the columns or the ribbons and contribute to the stability of the whole solid-state assembly. Water molecules in the hydrate crystal form (I) bridge columns of cyclic peptoid molecules, providing a more efficient packing.

Structural Characterization of Self-Assembled Multilayers by FTIR

1994 ◽  
Vol 6 (2) ◽  
pp. 122-126 ◽  
Author(s):  
Stacey F. Bent ◽  
Marcia L. Schilling ◽  
William L. Wilson ◽  
Howard E. Katz ◽  
A. L. Harris
Keyword(s):  
Structural Characterization ◽  
Self Assembled
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