Light-directed alignment, surface morphing and related processes: recent trends

2016 ◽  
Vol 4 (34) ◽  
pp. 7895-7910 ◽  
Author(s):  
Takahiro Seki

The immense potential of light responsive polymer materials toward technological applications in photonics, mechanics and micro-fabrication has been attracting increasing attention from both materials chemists and physicists.

2010 ◽  
Vol 9 (2) ◽  
pp. 101-113 ◽  
Author(s):  
Martien A. Cohen Stuart ◽  
Wilhelm T. S. Huck ◽  
Jan Genzer ◽  
Marcus Müller ◽  
Christopher Ober ◽  
...  

2017 ◽  
Vol 8 (1) ◽  
pp. 12-23 ◽  
Author(s):  
Hanbin Liu ◽  
Shaojian Lin ◽  
Yujun Feng ◽  
Patrick Theato

This paper reviews the chemical fundamentals of CO2-responsive polymers as well as the latest reported “smart” material systems switched by CO2.


Polymer ◽  
2003 ◽  
Vol 44 (8) ◽  
pp. 2255-2261 ◽  
Author(s):  
Darinka Christova ◽  
Rumiana Velichkova ◽  
Wouter Loos ◽  
Eric J. Goethals ◽  
Filip Du Prez

2014 ◽  
Vol 35 (22) ◽  
pp. 1943-1948 ◽  
Author(s):  
Yixiao Dong ◽  
Chaocan Zhang ◽  
Lili Wu ◽  
Yanjun Chen ◽  
Yuanyuan Hu

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2175
Author(s):  
José L. M. Gonçalves ◽  
Edgar J. Castanheira ◽  
Sérgio P. C. Alves ◽  
Carlos Baleizão ◽  
José Paulo Farinha

Stimuli-responsive polymer materials are used in smart nanocarriers to provide the stimuli-actuated mechanical and chemical changes that modulate cargo delivery. To take full advantage of the potential of stimuli-responsive polymers for controlled delivery applications, these have been grafted to the surface of mesoporous silica particles (MSNs), which are mechanically robust, have very large surface areas and available pore volumes, uniform and tunable pore sizes and a large diversity of surface functionalization options. Here, we explore the impact of different RAFT-based grafting strategies on the amount of a pH-responsive polymer incorporated in the shell of MSNs. Using a “grafting to” (gRAFT-to) approach we studied the effect of polymer chain size on the amount of polymer in the shell. This was compared with the results obtained with a “grafting from” (gRAFT-from) approach, which yield slightly better polymer incorporation values. These two traditional grafting methods yield relatively limited amounts of polymer incorporation, due to steric hindrance between free chains in “grafting to” and to termination reactions between growing chains in “grafting from.” To increase the amount of polymer in the nanocarrier shell, we developed two strategies to improve the “grafting from” process. In the first, we added a cross-linking agent (gRAFT-cross) to limit the mobility of the growing polymer and thus decrease termination reactions at the MSN surface. On the second, we tested a hybrid grafting process (gRAFT-hybrid) where we added MSNs functionalized with chain transfer agent to the reaction media containing monomer and growing free polymer chains. Our results show that both modifications yield a significative increase in the amount of grafted polymer.


2021 ◽  
Author(s):  
Huiyang Li ◽  
Xiaoyu Liang ◽  
Jianwei Duan ◽  
Youlu Chen ◽  
Xinxin Tian ◽  
...  

Stimulus-responsive polymer materials have attracted much attention as drug carrier because of the ability to deliver drug to the active site. Reactive oxygen species (ROS) plays crucial roles in cellular...


2017 ◽  
Vol 28 (11) ◽  
pp. 2085-2091 ◽  
Author(s):  
Yuwei Hao ◽  
Jingxin Meng ◽  
Shutao Wang

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