Detection of Thermoresponsive Polymer Phase Transition in Dilute Low-Volume Format by Microscale Thermophoretic Depletion

2014 ◽  
Vol 86 (14) ◽  
pp. 6797-6803 ◽  
Author(s):  
Manuel Wolff ◽  
Dieter Braun ◽  
Michael A. Nash
Keyword(s):  
Phase Transition ◽  
Polymer Phase ◽  
Thermoresponsive Polymer ◽  
Low Volume

Temperature-switched controlled release nanosystems based on molecular recognition and polymer phase transition

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3248-3259 ◽  
Author(s):  
Shao-Nan Lv ◽  
Chang-Jing Cheng ◽  
Ya-Ya Song ◽  
Zhi-Gang Zhao
Keyword(s):  
Phase Transition ◽  
Controlled Release ◽  
Molecular Recognition ◽  
Polymer Phase

Novel temperature-switched controlled release nanosystems based on molecular recognition of β-CD and thermosensitivity of PNIPAM phase transition of is developed.

scholarly journals Surface modification with thermoresponsive polymer brushes for a switchable electrochemical sensor

RSC Advances ◽  
2014 ◽  
Vol 4 (81) ◽  
pp. 43092-43097 ◽  
Author(s):  
Clément Comminges ◽  
Stefano Frasca ◽  
Martin Sütterlin ◽  
Erik Wischerhoff ◽  
André Laschewsky ◽  
...  
Keyword(s):  
Phase Transition ◽  
Surface Modification ◽  
Electrochemical Sensor ◽  
Polymer Brushes ◽  
Thermoresponsive Polymer ◽  
Reversible Phase Transition ◽  
Reversible Phase

Thermoresponsive polymer brushes' reversible phase transition is evidenced with E-QCM-D and electrochemistry, and acts as an electrochemical switch.

scholarly journals Role of constituents for the chirality isolation of single-walled carbon nanotubes by the reversible phase transition of a thermoresponsive polymer

RSC Advances ◽  
2020 ◽  
Vol 10 (41) ◽  
pp. 24570-24576
Author(s):  
Eriko Shimura ◽  
Tomomi Tanaka ◽  
Yuki Kuwahara ◽  
Takeshi Saito ◽  
Toshiki Sugai ◽  
...  
Keyword(s):  
Phase Transition ◽  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Sodium Borate ◽  
Thermoresponsive Polymer ◽  
Experimental Conditions ◽  
Reversible Phase Transition ◽  
Walled Carbon Nanotubes ◽  
Reversible Phase

Optimized experimental conditions in the presence of sodium borate achieved the selective release of (6,4) nanotubes into the liquid phase.

Polymer phase transition inn-lauryl methacrylate monoliths

2016 ◽  
Vol 65 (6) ◽  
pp. 706-712
Author(s):  
Zahra Dembahri ◽  
Séverine Le Gac ◽  
Kamal Tobal ◽  
Naziha Chirani ◽  
Christian Rolando ◽  
...  
Keyword(s):  
Phase Transition ◽  
Polymer Phase

Microwave-Assisted Preparation of PS Phase Change Microcapsules

2013 ◽  
Vol 834-836 ◽  
pp. 152-155
Author(s):  
Gu Xia Wang ◽  
Sheng Wei Guo ◽  
Wei Bing Xu
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Reaction Time ◽  
Sodium Dodecyl Sulfate ◽  
Phase Change ◽  
Sodium Dodecyl ◽  
Key Factors ◽  
Polymer Phase ◽  
Microwave Assisted ◽  
The Core

Polymer phase change microcapsules were prepared through microwave-assisted emulsion polymerization, with the core of hexadecane, the shell of styrene, the emulsifier of sodium dodecyl sulfate, the initiator of potassium persulfate. A few of key factors which can influence the thermal performance and the encapsulation, such as emulsifiers, initiators, temperature and reaction time were investigated. FTIR and DSC were employed to characterize the structure, the phase transition temperature and latent heat.

Enhanced Luminescence Efficiency from Hydrogel Microbead Encapsulated Quantum Dots

2006 ◽  
Vol 959 ◽  
Author(s):  
Arup Neogi ◽  
Santaneel Ghosh ◽  
Jianyou Li ◽  
Tong Cai ◽  
Zhibing Hu
Keyword(s):  
Phase Transition ◽  
Quantum Dots ◽  
Refractive Index ◽  
Optical Properties ◽  
Index Volume ◽  
Volume Density ◽  
Volume Phase Transition ◽  
Thermoresponsive Polymer ◽  
Luminescence Efficiency ◽  
Enhanced Luminescence

ABSTRACTIn this paper, a novel quantum dot (QD) based nanomaterial system is presented for efficient FRET analysis. The quantum dots have been embedded in hydrogel microspheres based on poly(N-isopropylacrylamide) (PNIPAM) a thermoresponsive polymer that undergoes a volume phase transition across the low critical solution (LCST). The optical properties of the quantum dots entrapped within the gel microspheres has been modified due to change in refractive index, volume density of the surrounding hydrogel medium. The QDs encapsulated in the PNIPAM microspheres showed 100–200 % enhancement in the PL efficiency as the microgels shrank at the temperature above the LCST temperature of the gel.

scholarly journals Dynamic electrical behaviour of a thermoresponsive polymer in well-defined poly(N-isopropylacrylamide)-grafted semiconductor devices

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34517-34521 ◽  
Author(s):  
Tsukuru Masuda ◽  
Taira Kajisa ◽  
Aya Mizutani Akimoto ◽  
Akane Fujita ◽  
Kenichi Nagase ◽  
...  
Keyword(s):  
Phase Transition ◽  
Real Time ◽  
Temperature Change ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Electrical Behaviour ◽  
Thermoresponsive Polymer ◽  
Effect Transistor ◽  
Response To Temperature ◽  
Transition Behaviour

Herein, we found that the phase transition behaviour from swelling state to deswelling state in response to temperature change was electrically detected in real time by using the poly(N-isopropylacrylamide)-grafted gate field effect transistor.

The influence of a thermoresponsive polymer on the microdynamic phase transition mechanisms of distinctly structured thermoresponsive ionic liquids

2017 ◽  
Vol 19 (33) ◽  
pp. 22263-22271 ◽  
Author(s):  
Lan Ma ◽  
Ge Wang ◽  
Shengtong Sun ◽  
Peiyi Wu
Keyword(s):  
Phase Transition ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ternary Solution ◽  
Phase Transition Behavior ◽  
Thermoresponsive Polymer ◽  
Transition Behavior

The study of a ternary solution involving a thermoresponsive polymer, a thermoresponsive ionic liquid (IL), and a solvent will not only help with interpreting their distinct phase transition behavior, but also promote the development of novel thermoresponsive systems.

Thiol coupling based synthesis of temperature-sensitive polymer–peptide conjugates with controlled architecture.

2012 ◽  
Vol 1418 ◽  
Author(s):  
Jean-Baptiste Guilbaud ◽  
Aline F. Miller ◽  
Alberto Saiani
Keyword(s):  
Phase Transition ◽  
Molecular Weight ◽  
Low Temperature ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Temperature Sensitive ◽  
Thermoresponsive Polymer ◽  
Peptide Conjugates ◽  
Synthetic Strategy ◽  
Self Assembling

ABSTRACTA synthetic strategy to couple selectively an ionic complementary thiol modified octapeptide, that is able to gel at low temperature, to the thermoresponsive polymer poly(N-isopropylacrylamide) (pNIPAAm) with controlled molecular weight and narrow polydispersity is described. The polymer was synthesized by atom transfer radical polymerization (ATRP) affording halogen functionalized chain ends. This allowed subsequent coupling to a thiol terminated ionic complementary octapeptide via nucleophile substitution. Results indicated that the peptide was covalently attached to the polymer and that both the coil-globule phase transition of pNIPAAm and the gelation properties of the peptide were retained in the conjugated product. This method provides a versatile route for the synthesis of a range of bioconjugate materials with controlled architecture and dual self-assembling and thermoresponsive behavior.

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