Steric hindrance effect on the thermo- and photo-responsive properties of pyrene-based polymers

2018 ◽  
Vol 42 (8) ◽  
pp. 5698-5708 ◽  
Author(s):  
Junqiu Liao ◽  
Shenglan Liu ◽  
Yongjie Yuan ◽  
Hailiang Zhang
Keyword(s):  
Steric Hindrance ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Type Phase ◽  
Phase Behaviors

We synthesized a novel series of pyrene-based thermo- and photo-dual responsive polymers named poly(pyren-1-yl-o(m,p)-vinylbenzoate) (P(Py-o(m,p)-VB)). And the influence of the steric hindrance effect on LCST-type phase behaviors and photocleavage properties has been studied.

Temperature and pH dual-responsive poly(vinyl lactam) copolymers functionalized with amine side groups via RAFT polymerization

2016 ◽  
Vol 7 (31) ◽  
pp. 5011-5022 ◽  
Author(s):  
Huan Peng ◽  
Wenjing Xu ◽  
Andrij Pich
Keyword(s):  
Raft Polymerization ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Alkaline Conditions

A series of statistical copolymers based on cyclic N-vinyl lactams and N-vinylformamide were synthesized via RAFT polymerization. Tempertaure/pH dual responsive polymers were obtained via hydrolysis the copolymers in alkaline conditions.

Synthesis and LCST-type phase behavior of water-soluble polypeptide with Y-shaped and charged side-chains

2016 ◽  
Vol 7 (10) ◽  
pp. 1922-1930 ◽  
Author(s):  
Yanzhi Xu ◽  
Mengxiang Zhu ◽  
Minjie Li ◽  
Ying Ling ◽  
Haoyu Tang
Keyword(s):  
Phase Behavior ◽  
Water Soluble ◽  
Side Chains ◽  
Synthetic Route ◽  
Type Phase ◽  
Phase Behaviors ◽  
First Time

Water-soluble thermoresponsive polypeptides with LCST-type phase behaviors bearing Y-shaped and charged side-chains have been reported for the first time by a multi-step synthetic route.

Synthesis of thermal and oxidation dual responsive polymers for reactive oxygen species (ROS)-triggered drug release

2015 ◽  
Vol 6 (5) ◽  
pp. 738-747 ◽  
Author(s):  
Chunsheng Xiao ◽  
Jianxun Ding ◽  
Lili Ma ◽  
Chenguang Yang ◽  
Xiuli Zhuang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drug Release ◽  
Main Chain ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Responsive Polymer ◽  
Triggered Drug Release

A PEG-based main chain thermo-responsive polymer with oxidation-triggerable thioether groups: synthesis, characterization and its use for ROS-responsive drug release.

scholarly journals Nanofibers for textile waste water management

2019 ◽  
Vol 14 (2) ◽  
pp. 297-310 ◽  
Author(s):  
Joginder singh Paneysar ◽  
Snehal Sawant ◽  
Meng Hei Ip ◽  
Sukhwinder kaur Bhullar ◽  
Stephen Barton ◽  
...  
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Textile Wastewater ◽  
Wastewater Management ◽  
Freundlich Isotherms ◽  
Responsive Polymers ◽  
Dual Responsive ◽  
Ft Ir ◽  
Scavenging Efficiency

Abstract Currently, textile wastewater management focuses on dye removal efficiency and operating costs. Dual responsive polymers are choice materials because they can extract diverse organic compounds from water at their phase transition point. They are copolymers of the acrylamide class, and have been fully characterized by FT-IR, 1H-NMR, DSC, GPC and surface area analysis. Of the five dual responsive polymers, the copolymer of NIPAAM and DMAEMA (CoP-1) offers the best extraction of acidic and basic dyes from wastewater. All copolymers investigated can achieve better than 90% dye removal when used at 4 mg/ml concentration. This dye-scavenging efficiency increases to almost 99% at 3 mg/ml, on conversion of the copolymers to nanofibers in 300 to 500 nm size. Langmuir and Freundlich isotherms were constructed to study the mechanism of dye adsorption. The nanofibers have been shown to be reusable for removal of dyes from water, suggesting that such systems may add benefit to current dye removal methods from textile industry wastewater.

Synthesis and UCST-type phase behaviors of OEGylated random copolypeptides in alcoholic solvents

2016 ◽  
Vol 54 (21) ◽  
pp. 3444-3453 ◽  
Author(s):  
Mengxiang Zhu ◽  
Wenjun Liu ◽  
Jiang Xiao ◽  
Ying Ling ◽  
Haoyu Tang
Keyword(s):  
Type Phase ◽  
Phase Behaviors

CO2 switchable dual responsive polymers as draw solutes for forward osmosis desalination

2013 ◽  
Vol 49 (75) ◽  
pp. 8377 ◽  
Author(s):  
Yufeng Cai ◽  
Wenming Shen ◽  
Rong Wang ◽  
William B. Krantz ◽  
Anthony G. Fane ◽  
...  
Keyword(s):  
Forward Osmosis ◽  
Responsive Polymers ◽  
Dual Responsive

Thermoresponse and self-assembly of an ABC star quarterpolymer with O2 and redox dual-responsive Y junctions

2018 ◽  
Vol 9 (9) ◽  
pp. 1095-1108 ◽  
Author(s):  
Xiaoqi Zhao ◽  
Wentao Wu ◽  
Jian Zhang ◽  
Wenxue Dai ◽  
Youliang Zhao
Keyword(s):  
Phase Transition ◽  
Self Assembly ◽  
Dual Responsive ◽  
Type Phase ◽  
Miktoarm Star

The stimuli-tunable LCST-type phase transition and self-assembly behaviors of a multi-responsive 3-miktoarm star bearing O2/redox-sensitive and H-bond-switchable Y junctions were revealed.

Oxidation and temperature dual responsive polymers based on phenylboronic acid and N-isopropylacrylamide motifs

2016 ◽  
Vol 7 (7) ◽  
pp. 1494-1504 ◽  
Author(s):  
Mei Zhang ◽  
Cheng-Cheng Song ◽  
Ran Ji ◽  
Zeng-Ying Qiao ◽  
Chao Yang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Phenylboronic Acid ◽  
Responsive Polymers ◽  
Dual Responsive

Oxidation and temperature dual responsive copolymers using ROS as a target for drug delivery have been demonstrated.

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.

Steric hindrance influence of a diazo link upon mesogenic properties of some ligands and related copper complexes

1997 ◽  
Vol 94 ◽  
pp. 1695-1714 ◽  
Author(s):  
P Lesot ◽  
F Perez ◽  
P Judeinstein ◽  
JP Bayle ◽  
H Allouchi ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
Copper Complexes
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