Miscibility and Hydrogen-Bonding Behavior in Organic/Inorganic Polymer Hybrids Containing Octaphenol Polyhedral Oligomeric Silsesquioxane

2008 ◽  
Vol 112 (35) ◽  
pp. 10821-10829 ◽  
Author(s):  
Ying-Chieh Yen ◽  
Shiao-Wei Kuo ◽  
Chih-Feng Huang ◽  
Jem-Kun Chen ◽  
Feng-Chih Chang
Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2098 ◽  
Author(s):  
Mingyue Wang ◽  
Hong Chi ◽  
Joshy K.S. ◽  
Fuke Wang

Polyhedral oligomeric silsesquioxane (POSS) has been considered as one of the most promising nanofillers in academic and industrial research due to its unique multifunctional nanostructure, easy functionalization, hybrid nature, and high processability. The progress of POSS has been extensive, particularly applications based on single- or multiple-armed POSS. In polymer hybrids, in order to enhance the properties, bifunctional POSS has been incorporated into the backbone chain of the polymer. This review summarizes recent developments in the synthesis, modification, and application of bifunctional POSS-containing composite materials. This includes amino-POSS, hydroxyl-POSS, aromatic ring-POSS, ether-POSS, and vinyl groups-POSS and their applications, exemplified by polyurethanes (PUs) and polyimides (PIs). In addition, the review highlights the enhancement of thermal, mechanical, and optical properties of the composites.


2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Shiao-Wei Kuo ◽  
Jing-Long Hong ◽  
Yu-Chan Huang ◽  
Jem-Kun Chen ◽  
Shih-Kang Fan ◽  
...  

New star poly(N-isopropylacrylamide)-b-polyhedral oligomeric silsesquioxane (PNIPAm-b-POSS) copolymers were synthesized from octa-azido functionalized POSS (N3-POSS) and alkyne-PNIPAm, which was prepared using an alkyne-functionalized atom transfer radical polymerization (ATRP) initiator (propargyl 2-bromo-2-methylpropionamide), via click chemistry. These star PNIPAm-b-POSS copolymers undergo a sharp coil-globule transition in water at above 32°C changing from a hydrophilic state below this temperature to a hydrophobic state above it, which is similar to linear PNIPAm homopolymers. More interestingly, we found that these star polymers exhibited strong blue photoluminescence in water above a lower critical solution temperature (LCST). This photoluminescence was likely due to the constrained geometric freedom and relatively rigid structure caused by intramolecular hydrogen bonding within the star PNIPAm polymers, which exhibit an intrinsic fluorescent behavior.


2002 ◽  
Author(s):  
Brent Viers ◽  
Shawn Phillips ◽  
Timothy Haddad ◽  
Alan Esker ◽  
Joe Polidan

Sign in / Sign up

Export Citation Format

Share Document