Hydrogen-Bonded Layer-by-Layer Temperature-Triggered Release Films†

Langmuir ◽  
2009 ◽  
Vol 25 (24) ◽  
pp. 14025-14029 ◽  
Author(s):  
Aliaksandr Zhuk ◽  
Svetlana Pavlukhina ◽  
Svetlana A. Sukhishvili
Keyword(s):  
Layer By Layer ◽  
Triggered Release ◽  
Hydrogen Bonded

Interpolymer complexes of poly(sulfonic acid)s and poly(ethylene oxide): an unexpected association

Soft Matter ◽  
2019 ◽  
Vol 15 (45) ◽  
pp. 9318-9324
Author(s):  
Liliana Maldonado ◽  
Gabriel Debais ◽  
Federico Davia ◽  
Lucila P. Méndez De Leo ◽  
Mario Tagliazucchi
Keyword(s):  
Aqueous Solution ◽  
Ethylene Oxide ◽  
Sulfonic Acid ◽  
Layer By Layer ◽  
Interpolymer Complexes ◽  
Layer Deposition ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Hydrogen Bonded

Poly(sulfonic acid)s and poly(ethylene oxide) unexpectedly form novel hydrogen-bonded interpolymer complexes in aqueous solution and on surfaces by layer-by-layer deposition.

Effect of a Competitive Solvent on Binding Enthalpy and Chain Intermixing in Hydrogen-Bonded Layer-by-Layer Films

2019 ◽  
Vol 52 (12) ◽  
pp. 4432-4440 ◽  
Author(s):  
Victor Selin ◽  
Aliaksei Aliakseyeu ◽  
John F. Ankner ◽  
Svetlana A. Sukhishvili
Keyword(s):  
Layer By Layer ◽  
Binding Enthalpy ◽  
Hydrogen Bonded

Layer-by-Layer Assembled Hydrogen-Bonded Multilayer Poly(2-oxazoline) Membranes for Aqueous Separations

2020 ◽  
Vol 2 (12) ◽  
pp. 5398-5405
Author(s):  
Nithya Joseph ◽  
Maarten A. Mees ◽  
Maarten Vergaelen ◽  
Brecht Valley ◽  
Hanne Marien ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Hydrogen Bonded

From Cloudy to Transparent: Chain Rearrangement in Hydrogen-Bonded Layer-by-Layer Assembled Films

ChemPhysChem ◽  
2007 ◽  
Vol 8 (3) ◽  
pp. 418-424 ◽  
Author(s):  
Shuguang Yang ◽  
Yongjun Zhang ◽  
Xiaoyan Zhang ◽  
Ying Guan ◽  
Jian Xu ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Hydrogen Bonded

Layer-by-layer polyelectrolyte films containing insulin for pH-triggered release

2010 ◽  
Vol 20 (8) ◽  
pp. 1546-1552 ◽  
Author(s):  
Kentaro Yoshida ◽  
Katsuhiko Sato ◽  
Jun-ichi Anzai
Keyword(s):  
Layer By Layer ◽  
Triggered Release

Understanding of Growth Mechanism and Structure of Multilayer Thin Films via Layer-by-Layer Hydrogen Bonded Assembly from Polymer Brushes-Grafted Surface

2020 ◽  
Vol 12 (7) ◽  
pp. 890-900
Author(s):  
Hua Wei ◽  
Hua Zhang ◽  
Yang Zhou ◽  
Zongbao Wang ◽  
Rong Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Atom Transfer Radical Polymerization ◽  
Growth Mechanism ◽  
Polymer Brushes ◽  
Multilayer Films ◽  
Multilayer Thin Films ◽  
Layer By Layer ◽  
Deposition Technique ◽  
Layer Deposition ◽  
Hydrogen Bonded

This study demonstrated the feasibility of polymer brushes-modified plate substrate as template to construct multilayer thin films via layer-by-layer hydrogen bonded assembly. The anchored chains via controlled surface-initiated atom transfer radical polymerization (SI-ATRP). The anchored poly(4-vinylpyridine) brushes functions as a multivalent H-acceptor to regulate the following hydrogen bonded assembly with H-donors to construct multilayer thin films via layer-by-layer deposition technique. The growth mechanism and film natures of multilayer films mediated by hydrogen bonded assembly from a polymer brushes-grafted surface were fully investigated.

scholarly journals pH-Triggered release from surface-modified poly(lactic-co-glycolic acid) nanoparticles

2015 ◽  
Vol 6 ◽  
pp. 2504-2512 ◽  
Author(s):  
Manuel Häuser ◽  
Klaus Langer ◽  
Monika Schönhoff
Keyword(s):  
Self Assembly ◽  
Glycolic Acid ◽  
Ph Value ◽  
Particle System ◽  
Plga Nanoparticles ◽  
Ph Sensitive ◽  
Layer By Layer ◽  
Triggered Release ◽  
Layer System ◽  
H Nmr

Nanoparticles (NP) of poly(lactic-co-glycolic acid) (PLGA) represent a promising biodegradable drug delivery system. We suggest here a two-step release system of PLGA nanoparticles with a pH-tunable polymeric shell, providing an initial pH-triggered step, releasing a membrane-toxic cationic compound. PLGA nanoparticles are coated by polyelectrolytes using the layer-by-layer self-assembly technique, employing poly(acrylic acid) (PAA) as a pH-sensitive component and poly(diallyldimethylammonium chloride) (PDADMAC) as the releasable polycation. The pH during multilayer deposition plays a major role and influences the titration curve of the layer system. The pH-tunability of PAA is intensively investigated with regard to the pH region, in which the particle system becomes uncharged. The isoelectric point can be shifted by employing suitable deposition pH values. The release is investigated by quantitative 1H NMR, yielding a pH-dependent release curve. A release of PDADMAC is initiated by a decrease of the pH value. The released amount of polymer, as quantified by 1H NMR analysis, clearly depends on the pH value and thus on the state of deprotonation of the pH-sensitive PAA layer. Subsequent incubation of the nanoparticles with high concentrations of sodium chloride shows no further release and thus demonstrates the pH-driven release to be quantitative.

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