An insight into the supramolecular interactions in two linear polyvanadates

2021 ◽  
pp. 130681
Author(s):  
Snehasish Thakur ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Supramolecular Interactions ◽  
Insight Into

An insight into dapsone co-crystals: sulfones as participants in supramolecular interactions

CrystEngComm ◽  
2013 ◽  
Vol 15 (40) ◽  
pp. 8173 ◽  
Author(s):  
Inês Martins ◽  
Marta Martins ◽  
Auguste Fernandes ◽  
Vânia André ◽  
M. Teresa Duarte
Keyword(s):  
Supramolecular Interactions ◽  
Insight Into

A theoretical insight into non-covalent supramolecular interactions in the solid state structures of two octahedral iron(iii) complexes

CrystEngComm ◽  
2020 ◽  
Vol 22 (35) ◽  
pp. 5731-5742 ◽  
Author(s):  
Tanmoy Basak ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Crystal Packing ◽  
Supramolecular Interactions ◽  
Interaction Energies ◽  
Π Interactions ◽  
Solid State Structures ◽  
Theoretical Insight ◽  
Insight Into

The nature and characteristics of the C–H⋯π interactions that play an important role in crystal packing of two iron(iii) complexes have been discussed. The DFT calculations have been conducted to determine the interaction energies in these complexes.

An insight into carvedilol solid forms: effect of supramolecular interactions on the dissolution profiles

CrystEngComm ◽  
2014 ◽  
Vol 16 (15) ◽  
pp. 3168-3179 ◽  
Author(s):  
Livia Deris Prado ◽  
Helvécio Vinícius Antunes Rocha ◽  
Jackson Antônio Lamounier Camargos Resende ◽  
Glaucio Braga Ferreira ◽  
Ana Maria Rangel de Figuereido Teixeira
Keyword(s):  
Melting Point ◽  
Dissolution Rate ◽  
Supramolecular Interactions ◽  
Potential Strategy ◽  
Insight Into

Carvedilol polymorph III, with higher melting point and dissolution rate than polymorph II, presents a potential strategy for carvedilol development.

scholarly journals Allosteric pathway selection in templated assembly

2019 ◽  
Vol 5 (10) ◽  
pp. eaaw3353 ◽  
Author(s):  
Martijn van Galen ◽  
Ruben Higler ◽  
Joris Sprakel
Keyword(s):  
Building Blocks ◽  
Supramolecular Interactions ◽  
High Fidelity ◽  
Self Assembling ◽  
Molecular Building Blocks ◽  
Large Numbers ◽  
Solution Aggregation ◽  
Allosteric Pathway ◽  
Insight Into ◽  
Selection Of

Assembling large numbers of molecular building blocks into functional nanostructures is no trivial task. It relies on guiding building blocks through complex energy landscapes shaped by synergistic and antagonistic supramolecular interactions. In nature, the use of molecular templates is a potent strategy to navigate the process to the desired structure with high fidelity. Yet, nature’s templating strategy remains to be fully exploited in man-made nanomaterials. Designing effective template-guided self-assembling systems can only be realized through precise insight into how the chemical design of building blocks and the resulting balance of repulsive and attractive forces give rise to pathway selection and suppression of trapped states. We develop a minimal model to unravel the kinetic pathways and pathway selection of the templated assembly of molecular building blocks on a template. We show how allosteric activation of the associative interactions can suppress undesired solution-aggregation pathways and gives rise to a true template-assembly path.

Fluorescence Spectroscopic Insight into the Supramolecular Interactions in DNA-Based Enantioselective Sulfoxidation

ChemBioChem ◽  
2018 ◽  
Vol 19 (20) ◽  
pp. 2233-2240 ◽  
Author(s):  
Yu Cheng ◽  
Mingpan Cheng ◽  
Jingya Hao ◽  
Guoqing Jia ◽  
Can Li
Keyword(s):  
Supramolecular Interactions ◽  
Insight Into

Calibration problems in hydrogen luminosities

1966 ◽  
Vol 24 ◽  
pp. 322-330
Author(s):  
A. Beer
Keyword(s):  
Galactic Structure ◽  
B Stars ◽  
Insight Into

The investigations which I should like to summarize in this paper concern recent photo-electric luminosity determinations of O and B stars. Their final aim has been the derivation of new stellar distances, and some insight into certain patterns of galactic structure.

Stochasting modeling of planetary ring systems

1984 ◽  
Vol 75 ◽  
pp. 461-469 ◽  
Author(s):  
Robert W. Hart
Keyword(s):  
Maximum Entropy ◽  
Ring System ◽  
The Sun ◽  
Ultimate State ◽  
Interparticle Interactions ◽  
Ring Systems ◽  
First Order ◽  
Planetary Ring ◽  
Insight Into

ABSTRACTThis paper models maximum entropy configurations of idealized gravitational ring systems. Such configurations are of interest because systems generally evolve toward an ultimate state of maximum randomness. For simplicity, attention is confined to ultimate states for which interparticle interactions are no longer of first order importance. The planets, in their orbits about the sun, are one example of such a ring system. The extent to which the present approximation yields insight into ring systems such as Saturn's is explored briefly.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

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