Synthesis of cinnamoyl and coumarin functionalized aliphatic polycarbonates

2017 ◽  
Vol 8 (48) ◽  
pp. 7515-7528 ◽  
Author(s):  
Julian P. Chesterman ◽  
Fei Chen ◽  
Amanda J. Brissenden ◽  
Brian G. Amsden
Keyword(s):  
Responsive Polymers ◽  
Reversible Dimerization

With the objective of generating photo-responsive polymers, carbonate monomers with pendant cinnamoyl or coumarin moieties, which are capable of photo-reversible dimerization, were synthesized.

Amino-functional polyethers: versatile, stimuli-responsive polymers

2020 ◽  
Vol 11 (24) ◽  
pp. 3940-3950 ◽  
Author(s):  
Patrick Verkoyen ◽  
Holger Frey
Keyword(s):  
Ring Opening ◽  
Review Article ◽  
Stimuli Responsive ◽  
New Class ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers

Amino-functional polyethers have emerged as a new class of “smart”, i.e. pH- and thermoresponsive materials. This review article summarizes the synthesis and applications of these materials, obtained from ring-opening of suitable epoxide monomers.

Smart Drug Release Systems Based on Stimuli-Responsive Polymers

2013 ◽  
Vol 13 (9) ◽  
pp. 1369-1380 ◽  
Author(s):  
Guangyan Qing ◽  
Minmin Li ◽  
Lijing Deng ◽  
Ziyu Lv ◽  
Peng Ding ◽  
...  
Keyword(s):  
Drug Release ◽  
Stimuli Responsive ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Smart Drug

scholarly journals Thermo- and Photoresponsive Behaviors of Dual-Stimuli-Responsive Organogels Consisting of Homopolymers of Coumarin-Containing Methacrylate

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 329
Author(s):  
Seidai Okada ◽  
Eriko Sato
Keyword(s):  
Functional Group ◽  
Solution Temperature ◽  
Stimuli Responsive ◽  
Critical Solution Temperature ◽  
Equilibrium Degree ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Dual Functional ◽  
Wide Range ◽  
Increasing Temperature

Coumarin-containing vinyl homopolymers, such as poly(7-methacryloyloxycoumarin) (P1a) and poly(7-(2′-methacryloyloxyethoxy)coumarin) (P1b), show a lower critical solution temperature (LCST) in chloroform, which can be controlled by the [2 + 2] photochemical cycloaddition of the coumarin moiety, and they are recognized as monofunctional dual-stimuli-responsive polymers. A single functional group of monofunctional dual-stimuli-responsive polymers responds to dual stimuli and can be introduced more uniformly and densely than those of dual-functional dual-stimuli-responsive polymers. In this study, considering a wide range of applications, organogels consisting of P1a and P1b, i.e., P1a-gel and P1b-gel, respectively, were synthesized, and their thermo- and photoresponsive behaviors in chloroform were investigated in detail. P1a-gel and P1b-gel in a swollen state (transparent) exhibited phase separation (turbid) through a temperature jump and reached a shrunken state (transparent), i.e., an equilibrium state, over time. Moreover, the equilibrium degree of swelling decreased non-linearly with increasing temperature. Furthermore, different thermoresponsive sites were photopatterned on the organogel through the photodimerization of the coumarin unit. The organogels consisting of homopolymers of coumarin-containing methacrylate exhibited unique thermo- and photoresponsivities and behaved as monofunctional dual-stimuli-responsive organogels.

Mono and Multi‐Stimuli Responsive Polymers: Application as Intelligent Nano‐Drug Delivery Systems

2021 ◽  
pp. 237-265
Author(s):  
Archana Sidagouda Patil ◽  
Anand Panchakshari Gadad ◽  
Panchaxari Mallappa Dandagi
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Stimuli Responsive ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Nano Drug Delivery

scholarly journals Metal-Organic Framework-Based Stimuli-Responsive Polymers

2021 ◽  
Vol 5 (4) ◽  
pp. 101
Author(s):  
Menglian Wei ◽  
Yu Wan ◽  
Xueji Zhang
Keyword(s):  
Metal Organic Framework ◽  
Chemical Properties ◽  
Stimuli Responsive ◽  
Guest Molecules ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Reversible Phase Transition ◽  
Metal Organic ◽  
External Stimuli ◽  
Organic Framework

Metal-organic framework (MOF) based stimuli-responsive polymers (coordination polymers) exhibit reversible phase-transition behavior and demonstrate attractive properties that are capable of altering physical and/or chemical properties upon exposure to external stimuli, including pH, temperature, ions, etc., in a dynamic fashion. Thus, their conformational change can be imitated by the adsorption/desorption of target analytes (guest molecules), temperature or pressure changes, and electromagnetic field manipulation. MOF-based stimuli responsive polymers have received great attention due to their advanced optical properties and variety of applications. Herein, we summarized some recent progress on MOF-based stimuli-responsive polymers (SRPs) classified by physical and chemical responsiveness, including temperature, pressure, electricity, pH, metal ions, gases, alcohol and multi-targets.

scholarly journals 3D and 4D printable doubly dynamic polymers with high strength and humidity-triggered reversible actuation

2021 ◽  
Author(s):  
Zhen Jiang ◽  
Peidong Shen ◽  
Ming Li Tan ◽  
Yan Qiao ◽  
Jekaterina Viktorova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Complex Shape ◽  
High Strength ◽  
Responsive Polymers ◽  
Shape Transformations

It is highly desirable but challenging to develop humidity-responsive polymers with simultaneously improved mechanical properties and 3D printability, while still displaying fast, reversible and complex shape transformations. Herein, a facile...

A General Method for the Synthesis and Isolation of Well-Defined Core Cross-Linked Multistar Assemblies: A Route toward Enhanced pH-Responsive Polymers

2009 ◽  
Vol 42 (13) ◽  
pp. 4622-4631 ◽  
Author(s):  
Jing Fung Tan ◽  
Anton Blencowe ◽  
Tor Kit Goh ◽  
Irving Ted M. Dela Cruz ◽  
Greg G. Qiao
Keyword(s):  
Ph Responsive ◽  
Responsive Polymers ◽  
Ph Responsive Polymers ◽  
General Method

Bioinspired photo-responsive membrane enhanced with the “light-cleaning” feature for controlled molecule release

2022 ◽  
Author(s):  
Qisheng Ye ◽  
Rui Wang ◽  
Saitao Yan ◽  
Baoliang Chen ◽  
Xiaoying Zhu
Keyword(s):  
Membrane Fouling ◽  
Plant Leaves ◽  
Responsive Polymers ◽  
And Control

Inspired by the stomatal of plant leaves, a photo-responsive membrane was developed to enhance the removal of irreversible membrane fouling and control molecule release. The photo-responsive polymers were prepared by...

Stimuli-Responsive Polymers for Soft Robotics

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Yusen Zhao ◽  
Mutian Hua ◽  
Yichen Yan ◽  
Shuwang Wu ◽  
Yousif Alsaid ◽  
...  
Keyword(s):  
Autonomous Systems ◽  
Soft Robotics ◽  
Annual Review ◽  
Liquid Crystal Polymers ◽  
Publication Date ◽  
Stimuli Responsive ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Evaluation Of Performance ◽  
Robotic Applications

This article reviews recent progress in the use of stimuli-responsive polymers for soft robotics. First, we introduce different types of representative stimuli-responsive polymers, which include liquid crystal polymers and elastomers, hydrogels, shape memory polymers, magnetic elastomers, electroactive polymers, and thermal expansion actuators. We focus on the mechanisms of actuation and the evaluation of performance and discuss strategies for improvements. We then present examples of soft robotic applications based on stimuli-responsive polymers for bending, grasping, walking, swimming, flying, and sensing control. Finally, we discuss current opportunities and challenges of stimuli-responsive soft robots for future study. Expected final online publication date for the Annual Review of Control, Robotics, and Autonomous Systems, Volume 5 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Polyhydroxyalkanoates (PHA)-based responsive polymers

2021 ◽  
pp. 1-20
Author(s):  
Syed Mohammad Daniel Syed Mohamed ◽  
Nor Faezah Ansari ◽  
Nurhezreen Md Iqbal ◽  
Siti Nor Syairah Anis
Keyword(s):  
Responsive Polymers
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