scholarly journals Photophysical Studies of a New Water Soluble Indocarbocyanine Dye Adsorbed onto Microcrystalline Cellulose and beta-Cyclodextrin

Molecules ◽  
2013 ◽  
Vol 18 (5) ◽  
pp. 5648-5668 ◽  
Author(s):  
Reda El-Shishtawy ◽  
Anabela Oliveira ◽  
Paulo Almeida ◽  
Diana Ferreira ◽  
David Conceição ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Water Soluble ◽  
Beta Cyclodextrin ◽  
Photophysical Studies

Lightweight Concrete Based on Gypseous Binding Materials, Modified with Microcrystalline Cellulose, and Cavitationly Processed Sawdust

2019 ◽  
Vol 945 ◽  
pp. 188-192 ◽  
Author(s):  
A.A. Pykin ◽  
E.Y. Gornostaeva ◽  
N.P. Lukutsova ◽  
J.S. Pykina
Keyword(s):  
Mechanical Properties ◽  
Microcrystalline Cellulose ◽  
Lightweight Concrete ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Water Soluble ◽  
Waste Wood ◽  
Matrix Microstructure ◽  
Calcium Sulfate Dihydrate ◽  
Reducing Substances

The physical and mechanical properties of lightweight constructional heat-insulating concrete (sawdust gypsum concrete) with high-strength gypsum binder, modified by food cotton microcrystalline cellulose and organic fillers of plant origin from the waste wood of coniferous and deciduous species in the form of cavitationly processed pine and birch sawdust have been studied. The dependence of the cavitation extraction time of water-soluble reducing substances (sugars) from sawdust on the strength of sawdust gypsum concrete is established. The changes in microstructure of the gypsum matrix, the mean density, bending tension strength and compression strength, the thermal conductivity coefficient of sawdust gypsum concrete on the basis of the cavitationly processed sawdust with the introduction of microcrystalline cellulose are analyzed. It is proven that microcrystalline cellulose compacts the space between the crystalline hydrates of calcium sulfate dihydrate in the gypsum matrix microstructure and improves the physical and mechanical properties of sawdust gypsum concrete.

Synthesis, Photophysical Studies and Anticancer Activity of a New Halogenated Water-Soluble Porphyrin

2007 ◽  
Vol 83 (4) ◽  
pp. 897-903 ◽  
Author(s):  
Janusz M. Dąbrowski ◽  
Mariette M. Pereira ◽  
Luis G. Arnaut ◽  
Carlos J. P. Monteiro ◽  
Andreia F. Peixoto ◽  
...  
Keyword(s):  
Anticancer Activity ◽  
Water Soluble ◽  
Photophysical Studies ◽  
Water Soluble Porphyrin

scholarly journals Cavity Closure of 2-Hydroxypropyl-β-cyclodextrin: Replica Exchange Molecular Dynamics Simulations

2019 ◽  
Author(s):  
Khanittha Kerdpol ◽  
Jintawee Kicuntod ◽  
Peter Wolschann ◽  
Seiji Mori ◽  
Chompoonut Rungnim ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Conformational Changes ◽  
Inclusion Complexation ◽  
Water Soluble ◽  
Replica Exchange ◽  
Radius Of Gyration ◽  
Replica Exchange Molecular Dynamics ◽  
Beta Cyclodextrin ◽  
Dynamics Simulations

2-Hydroxypropyl-β-cyclodextrin (HPβCD) has unique properties to enhance the stability and the solubility of low water-soluble compounds by inclusion complexation. Understanding of the structural properties of HPβCD and its derivatives based on the number of 2-hydroxypropyl (HP) substituents at the a-D-glucopyranose subunits is rather important. In this work, replica exchange molecular dynamics simulations were performed to investigate the conformational changes of single- and double-sided HP-substitution called as 6-HPβCDs and 2,6-HPβCDs, respectively. The results show that glucose subunits in both 6-HPβCDs and 2,6-HPβCDs have lower chance to flip than in βCD. Also, HP groups are occasionally blocking the hydrophobic cavity of HPβCDs, thus hindering the drug inclusion. We found that HPβCDs with high number of HP-substitutions are more likely to be blocked, while HPβCDs with double-sided HP-substitution are even more probable to be blocked. Overall, 6-HPβCDs with three and four HP-substitutions are highlighted as the most suitable structures for guest encapsulation based on our conformational analyses such as structural distortion, radius of gyration, circularity and cavity self-closure of the HPβCDs.

scholarly journals Supramolecular interaction of sanguinarine dye with sulfobutylether-β-cyclodextrin: modulation of the photophysical properties and antibacterial activity

RSC Advances ◽  
2020 ◽  
Vol 10 (42) ◽  
pp. 25370-25378
Author(s):  
Vidya Kadam ◽  
Aarti S. Kakatkar ◽  
Nilotpal Barooah ◽  
Suchandra Chatterjee ◽  
Achikanath C. Bhasikuttan ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Photophysical Properties ◽  
Water Soluble ◽  
Supramolecular Interaction ◽  
Beta Cyclodextrin

The noncovalent host-guest interaction of sanguinarine (SGR) with a nontoxic, water soluble sulfobutylether-beta-cyclodextrin macrocyclic host modulates the photophysical properties, improves the photostability and antibacterial activity of SGR.

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