Incorporating Fluorescent CdTe Nanocrystals into a Hydrogel via Hydrogen Bonding:  Toward Fluorescent Microspheres with Temperature-Responsive Properties

2005 ◽  
Vol 17 (10) ◽  
pp. 2648-2653 ◽  
Author(s):  
Yanjun Gong ◽  
Mingyuan Gao ◽  
Dayang Wang ◽  
Helmuth Möhwald
Keyword(s):  
Hydrogen Bonding ◽  
Fluorescent Microspheres ◽  
Temperature Responsive ◽  
Cdte Nanocrystals

Switchable Photoluminescence of CdTe Nanocrystals by Temperature-Responsive Microgels

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9820-9824 ◽  
Author(s):  
M. Agrawal ◽  
J. Rubio-Retama ◽  
N. E. Zafeiropoulos ◽  
N. Gaponik ◽  
S. Gupta ◽  
...  
Keyword(s):  
Temperature Responsive ◽  
Cdte Nanocrystals

The Design of Temperature and pH-Responsive Drug Delivery System Based on Cellulose and Aminated Cellulose by Computational and Experimental Methods

2020 ◽  
pp. 1-12
Author(s):  
Enayat Mohsenzadeh ◽  
Hassan Namazi ◽  
Rahim Ghadari
Keyword(s):  
Hydrogen Bonding ◽  
Electrostatic Interactions ◽  
Binding Free Energy ◽  
In Vitro Release ◽  
Md Simulations ◽  
Ph Responsive ◽  
Temperature Responsive ◽  
Repulsive Forces ◽  
Vitro Release

In this study, molecular dynamics (MD) simulations were performed on cellulose and aminated cellulose. Obtained results show the presence of amine moieties and their protonation, positive charges and repulsive forces increase. As a result, the van der Waals and electrostatic interactions and hydrogen bonding number decrease. Then, paclitaxel was loaded through docking into the structures and was studied by MD simulations. The simulations were performed in several protonation states along with 25°C, 37°C, 42°C and 50°C temperatures. The carrier/ligand system behaviors were analyzed. The results indicate the increase of temperature and protonation decrease hydrogen bonding number between drug and carrier and increase binding free energy. At last, to compare the simulations results, paclitaxel was loaded in cellulose and aminated cellulose and investigated in the in vitro release at two conditions (37°C, pH 7.4, and 42°C, pH 5). Experimental results prove computational results as pH/temperature-responsive system.

A pH-responsive graftable supramolecular polymer with tailorable surface functionality by orthogonal halogen bonding and hydrogen bonding

2020 ◽  
Vol 11 (2) ◽  
pp. 385-392 ◽  
Author(s):  
Akshoy Jamadar ◽  
Anindita Das
Keyword(s):  
Hydrogen Bonding ◽  
Halogen Bonding ◽  
Supramolecular Polymer ◽  
Ph Responsive ◽  
Surface Functionality ◽  
Temperature Responsive ◽  
Tunable Morphology

Orthogonal halogen (X)-bonding and hydrogen (H)-bonding have been employed for constructing a surface functionalizable supramolecular polymer in water featuring tunable morphology and dual stimuli (pH and temperature) responsive properties.

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions

Fluorescence and pi-hydrogen bonding in naphthols

1968 ◽  
Vol 65 ◽  
pp. 1587-1589 ◽  
Author(s):  
Bithika Ghosh ◽  
Sadhan Basu
Keyword(s):  
Hydrogen Bonding

Theoretical study of intramolecular hydrogen bonding and molecular geometry of 2-trifluoromethylphenol

10.1002/jcc.2 ◽  
1996 ◽  
Vol 17 (16) ◽  
pp. 1804-1819 ◽  
Author(s):  
Attila Kov�cs ◽  
Istv�n Kolossv�ry ◽  
G�bor I. Csonka ◽  
Istv�n Hargittai
Keyword(s):  
Hydrogen Bonding ◽  
Theoretical Study ◽  
Molecular Geometry ◽  
Intramolecular Hydrogen Bonding ◽  
Intramolecular Hydrogen

PEMANFAATAN GLISERIN DARI RESIDU GLISERIN SEBAGAI PLASTICIZER UNTUK PEMBUATAN BIOPLASTIK DENGAN BAHAN BAKU PATI BONGGOL PISANG KEPOK

2017 ◽  
Vol 5 (4) ◽  
pp. 26-32 ◽  
Author(s):  
Azaria Robiana ◽  
M. Yashin Nahar ◽  
Hamidah Harahap
Keyword(s):  
Tensile Strength ◽  
Hydrogen Bonding ◽  
Fatty Acid ◽  
Maximum Yield ◽  
Sem Analysis ◽  
Water Molecules ◽  
Banana Weevil ◽  
Gelatinization Temperature ◽  
Recharge Area ◽  
Maximum Quantity

Glycerin residue is waste oleochemical industry that still contain glycerin. To produce quality and maximum quantity of glycerin, then research the effect of pH acidification using phosphoric acid. Glycerin analysis includes the analysis of pH, Fatty Acid and Ester (FAE), and analysis of the levels of glycerin. The maximum yield obtained at pH acidification 2 is grading 91,60% glycerin and Fatty Acid and Ester (FAE) 3,63 meq/100 g. Glycerin obtained is used as a plasticizer in the manufacture of bioplastics. Manufacture of bioplastics using the method of pouring a solution with varying concentrations of starch banana weevil (5% w/v and 7% w/v), variations of the addition of glycerin (1 ml, 3 ml, 5 ml and 7 ml), and a variety of gelatinization temperature (60°C, 70°C, and 80°C). Analysis of bioplastics include FTIR testing, tensile strength that is supported by SEM analysis. The results obtained in the analysis of FTIR does not form a new cluster on bioplastics starch banana weevil, but only a shift in the recharge area only, it is due to the addition of O-H groups originating from water molecules that enter the polysaccharide through a mechanism gelatinitation that generates interaction hydrogen bonding strengthened. The maximum tensile strength of bioplastics produced at a concentration of starch 7% w/v, 1 ml glycerine and gelatinization temperature of 80°C is 3,430 MPa. While the tensile strength bioplastic decreased with increasing glycerin which can be shown from the results of SEM where there is a crack, indentations and lumps of starch insoluble.

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