You are not logged in Total: 7journals, 20,272articles Online
AccountAccount
Login / Register
Forgot Login?
 
Main menuMain menu
What's new
Journal list
Visiting ranking
Phrase ranking
Polls
About us
 
SearchSearch
 
Journal Site
Advanced Search
 

Home  >  Journal list  >  Polymer Journal  >  Vol.50  No.4 (2018)  >  pp.337-345

Polymer Journal
<<Previous article Vol.50  No.4 (2018)   pp.337 - 345 Next article>>

Self-association behavior of amphiphilic molecules based on incompletely condensed cage silsesquioxanes and poly(ethylene glycol)s

Hiroaki Imoto, Ryoichi Katoh, Tomoko Honda, Shin-ichi Yusa, Kensuke Naka
Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan
Hiroaki Imoto
Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan
Ryoichi Katoh
Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Hyogo, Japan
Tomoko Honda
Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Hyogo, Japan
Shin-ichi Yusa
Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan
Kensuke Naka

Polyhedral oligomeric silsesquioxane (POSS) is an important building block for constructing organic-inorganic hybrid molecules or polymers. In this work, we report amphiphilic, incompletely condensed POSSs (IC-POSSs) possessing various substituents on the seven silicon atoms and two kinds of poly(ethylene glycol)s (PEGs) with different chain lengths. The IC-POSS cores possessed comparable thermal stability to that of the completely condensed POSS (CC-POSS) analogs, despite their open cage structure. The amphiphilic IC-POSSs formed micelles of different sizes and had polydispersity indices (PDIs) that were dependent on the substituents and the PEG chain length. Additionally, the lower critical solution temperatures (LCSTs) were observed for amphiphilic IC-POSSs possessing shorter PEG chains, while aqueous solutions of those with longer PEG chains showed high transmittance even at 80°C.


Keyword:
Nanocomposites, Polymer synthesis

Received: October 12, 2017 , Revised: December 03, 2017
Accepted: December 06, 2017 , Published online: February 06, 2018

NatureAbstract (Nature)


SPARC Japan

Terms of Use | Privacy Policy