Polystyrene-based Amphoteric Diblock Copolymers with Upper Critical Solution Temperature (UCST) in Aqueous Solutions

2021 ◽  
Author(s):  
Hirokazu Fukumoto ◽  
Thu Thao Pham ◽  
Yusuke Shigeta ◽  
Shinji Ozoe ◽  
Shin-ichi Yusa
Keyword(s):  
Aqueous Solutions ◽  
Diblock Copolymers ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Upper Critical Solution Temperature

scholarly journals Effects of the Hydrophilic–Lipophilic Balance of Alternating Peptides on Self-Assembly and Thermo-Responsive Behaviors

2019 ◽  
Vol 20 (18) ◽  
pp. 4604 ◽  
Author(s):  
Ihsan ◽  
Nargis ◽  
Koyama
Keyword(s):  
Aqueous Solutions ◽  
Self Assembly ◽  
Polymer Chains ◽  
Systematic Evaluation ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Hydrophilic Lipophilic Balance ◽  
Upper Critical Solution Temperature ◽  
Cloud Points ◽  
Micellization Behavior

A series of N-substituted poly(Gly–alter–Val) peptides were successfully synthesized for the systematic evaluation of the micellization behavior of alternating peptides. Three-component polymerization employing an aldehyde, a primary ammonium chloride, and potassium isocyanoacetate afforded four alternating peptides in excellent yields. We investigated the dependence of the hydrophilic–lipophilic balance of alternating peptides on the micellization behavior. All the aqueous solutions of alternating peptides exhibited upper critical solution temperature (UCST) behaviors, strongly indicating that the alternating binary pattern would mainly contribute to the UCST behaviors. The cloud points of alternating peptides shifted to higher temperatures as the side chains became more hydrophilic, which is opposite to the trend of typical surfactants. Such unusual micellization behaviors appeared to be dependent on the quasi-stable structure of single polymer chains formed in water.

Preparation of upper critical solution temperature (UCST) responsive diblock copolymers bearing pendant ureido groups and their micelle formation behavior in water

Soft Matter ◽  
2015 ◽  
Vol 11 (26) ◽  
pp. 5204-5213 ◽  
Author(s):  
Ami Fujihara ◽  
Naohiko Shimada ◽  
Atsushi Maruyama ◽  
Kazuhiko Ishihara ◽  
Keita Nakai ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Micelle Formation ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Upper Critical Solution Temperature ◽  
Formation Behavior

Ureido group-bearing methacrylate-type polymers show an upper critical solution temperature in water. We prepared a thermo-responsive diblock copolymer composed of a ureido group-bearing block.

scholarly journals How to manipulate the upper critical solution temperature (UCST)?

2017 ◽  
Vol 8 (1) ◽  
pp. 220-232 ◽  
Author(s):  
Jukka Niskanen ◽  
Heikki Tenhu
Keyword(s):  
Aqueous Solutions ◽  
Solution Temperature ◽  
Stimuli Responsive ◽  
Critical Solution Temperature ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Ph Influence ◽  
Counter Ions ◽  
Upper Critical Solution Temperature

In this mini-review, we discuss multi-stimuli-responsive polymers, which exhibit upper critical solution temperature (UCST) behavior mainly in aqueous solutions, and focus on examples where counter ions, electricity, light, or pH influence the thermoresponsiveness of these polymers.

scholarly journals Upper Critical Solution Temperature Behavior of pH-Responsive Amphoteric Statistical Copolymers in Aqueous Solutions

ACS Omega ◽  
2021 ◽  
Vol 6 (13) ◽  
pp. 9153-9163
Author(s):  
Komol Kanta Sharker ◽  
Yusuke Shigeta ◽  
Shinji Ozoe ◽  
Panittha Damsongsang ◽  
Voravee P. Hoven ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Temperature Behavior ◽  
Solution Temperature ◽  
Ph Responsive ◽  
Critical Solution Temperature ◽  
Upper Critical Solution Temperature

Upper critical solution temperature (UCST) phase transition of halide salts of branched polyethylenimine and methylated branched polyethylenimine in aqueous solutions

2016 ◽  
Vol 52 (3) ◽  
pp. 509-512 ◽  
Author(s):  
Minwoo Noh ◽  
Sunah Kang ◽  
Yeongbong Mok ◽  
So Jung Choi ◽  
Jeongseon Park ◽  
...  
Keyword(s):  
Phase Transition ◽  
Aqueous Solutions ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Upper Critical Solution Temperature ◽  
Branched Polyethylenimine ◽  
Halide Salts

Halide salts of branched polyethylenimine (b-PEI) and methylated b-PEI exhibited UCST phase transition in aqueous solutions.

Preparation and thermoresponsive properties of helical polypeptides bearing pyridinium salts

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40772-40778 ◽  
Author(s):  
Yan Wu ◽  
Xi Wang ◽  
Ying Ling ◽  
Haoyu Tang
Keyword(s):  
Ion Exchange ◽  
Aqueous Solutions ◽  
Exchange Reaction ◽  
Solution Temperature ◽  
Pyridinium Salts ◽  
Critical Solution Temperature ◽  
Ion Exchange Reaction ◽  
Upper Critical Solution Temperature

Polypeptides bearing 3-methylpyridinium groups and BF4− prepared by nuleophilic substitution and ion-exchange reaction showed upper critical solution temperature (UCST)-type transitions in aqueous solutions.

scholarly journals Oxazoline-Methacrylate Graft-Copolymers with Upper Critical Solution Temperature Behaviour in Yubase Oil

2021 ◽  
Author(s):  
Matilde Concilio ◽  
Nga Nguyen ◽  
C. Remzi Becer
Keyword(s):  
Aqueous Solutions ◽  
Graft Copolymers ◽  
Solution Temperature ◽  
Temperature Behaviour ◽  
Critical Solution Temperature ◽  
Soluble Polymers ◽  
Upper Critical Solution Temperature ◽  
Fundamental Understanding

Thermoresponsive behavior of polymers in aqueous solutions has been widely studied and utilized in various applications. However, the fundamental understanding on the use of oil soluble polymers in non-aqueous solutions...

Selective Hydrogen Bonding Controls Temperature Response of Layer-by-Layer Upper Critical Solution Temperature Micellar Assemblies

Soft Matter ◽  
2021 ◽  
Author(s):  
Aliaksei Aliakseyeu ◽  
Victoria Albright ◽  
Danielle Yarbrough ◽  
Samantha Hernandez ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Methacrylic Acid ◽  
Temperature Response ◽  
Solution Temperature ◽  
Layer By Layer ◽  
Critical Solution Temperature ◽  
Hydrogen Bonding Interactions ◽  
Upper Critical Solution Temperature ◽  
Lbl Films

This work establishes a correlation between the selectivity of hydrogen-bonding interactions and the functionality of micelle-containing layer-by-layer (LbL) assemblies. Specifically, we explore LbL films formed by assembly of poly(methacrylic acid)...

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