scholarly journals Highly compressive and stretchable poly(ethylene glycol) based hydrogels synthesised using pH-responsive nanogels without free-radical chemistry

Nanoscale ◽  
2019 ◽  
Vol 11 (16) ◽  
pp. 7921-7930 ◽  
Author(s):  
Nam T. Nguyen ◽  
Amir H. Milani ◽  
James Jennings ◽  
Daman J. Adlam ◽  
Anthony J. Freemont ◽  
...  
Keyword(s):  
Free Radical ◽  
Ethylene Glycol ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Radical Chemistry ◽  
New Strategy ◽  
Poly Ethylene ◽  
Free Radical Chemistry

A new strategy is developed to prepare a novel class of highly compressive and stretchable PEG-based hydrogels using pH-responsive nanogels.

One-shot synthesis and solution properties of ROS/pH responsive methoxy poly(ethylene glycol)-b-polycarbonate

2019 ◽  
Vol 10 (17) ◽  
pp. 2143-2151 ◽  
Author(s):  
Yan Zhang ◽  
Yue Xu ◽  
Chao Wei ◽  
Chuanhao Sun ◽  
Bingkun Yan ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Tertiary Amine ◽  
Solution Properties ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Amine Groups ◽  
Poly Ethylene

A one-shot method was employed to synthesize ROS/pH responsive methoxy poly(ethylene glycol)-b-polycarbonate (mPEG-b-poly(MN-co-MSe)) with the selenide and tertiary amine groups situated on the backbone.

A Tunable pH-Responsive Nanomaterials for Cancer Delivery

2013 ◽  
Vol 750-752 ◽  
pp. 1476-1479 ◽  
Author(s):  
Bin Liu ◽  
Guan Hui Gao ◽  
Peng Liu ◽  
Hu Qiang Yi ◽  
Wei Wei ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Ethylene Glycol ◽  
Potential Application ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Positive Potential ◽  
Ph Values ◽  
Drugs In Blood ◽  
Poly Ethylene

In this paper, we successfully designed a pH-responsive micelles based on hybrid polypeptide copolymers of poly (L-lysine-4-Azepan-1-yl-butyric)-b-poly (ethylene glycol)-b-poly (L-lysine-Diisopropylamide)-b-poly (L-leucine) (PLL(A)-PEG-PLL(B)-PLLeu) for efficient drug delivery. This pH-responsive nanoparticles were able to response to different pH values (pH=6.8 and 5.5). In vitro, these nanoparticles exhibited a stable and evenly distributed approximately 51 nm, a slightly positive potential about 10.3 mv at pH 7.4, which were crucial for the circulation of drugs in blood. While size and potential were about 130 nm and 34.7 mv at pH 6.8, which were good for drugs in membrane. Furthermore, the loading capability of DOX was up to 11.3%, and the pH-responsive release efficiency reached to 68.3% at pH 5.5. The results indicated that these micelles had huge potential application in cancer delivery.

pH-Responsive Poly(ethylene glycol)/Poly(l-lactide) Supramolecular Micelles Based on Host–Guest Interaction

2015 ◽  
Vol 7 (16) ◽  
pp. 8404-8411 ◽  
Author(s):  
Zhe Zhang ◽  
Qiang Lv ◽  
Xiaoye Gao ◽  
Li Chen ◽  
Yue Cao ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Synthesis and Self-Assembly of Well-Defined pH-Responsive Block Glycopolymers

2015 ◽  
Vol 815 ◽  
pp. 359-366 ◽  
Author(s):  
Qing Yun Yu ◽  
Lu Bin Lin ◽  
Xue Yu Xing ◽  
Hai Liang Dong ◽  
Xiao Ze Jiang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Self Assembly ◽  
Phenylboronic Acid ◽  
Proton Nuclear Magnetic Resonance ◽  
Similar Degree ◽  
Random Structure ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Ethyl Methacrylate ◽  
Poly Ethylene

Two pH-responsive block glycopolymers, poly (ethylene glycol)-b-Poly (2- (diethylamino) ethyl methacrylate-co-2-gluconamidoethyl methacrylate) (PEG113-b-P(DEA55-co-GAMA12)) and poly (ethylene glycol)-b-poly (2-(diethylamino) ethyl methacrylate)-b-poly (2-gluconamido ethyl methacrylate) (PEG113-b-PDEA55-b-PGAMA15), were synthesized via atom transfer radical polymerization (ATRP) by directly or successively polymerization of GAMA and DEA monomers using a PEG-based macroinitiator, respectively, without protecting group chemistry. Those block glycopolymers were confirmed by proton Nuclear Magnetic Resonance (1H NMR) and Gel Permeation Chromatography (GPC), and their self-assembly behaviors were characterized by Transmission Electron Microscopy (TEM), Dynamic Light Scattering (DLS) and Zeta-potential. The results show both synthetic block glycopolymers were dissolved molecularly in aqueous solution at acidic pH (such as pH 3), thus it can reversibly convert to be two-layer micelles comprising DEA and GAMA cores, PEG coronas with size of around 50 nm, or micelles comprising DEA cores, GAMA and PEG outer coronas with bigger size of 70 nm for PEG113-b- P(DEA55-co-GAMA12) and PEG113-b-PDEA55-b-PGAMA15), respectively, at basic condition. Both glycopolymers have the micellization process at middle pH (pH 6-8), but possess different isoelectric points (pIs) (at pH 8.0 and 7.8) for their pH responsive block of PEG113-b-P(DEA55-co-GAMA12) and PEG113-b-PDEA55-b-PGAMA15 with DEA-co-GAMA random structure or DEA chain only, respectively. This study not only reveals the self-assembly of pH responsive block glycopolymers with different architectures by fixing similar degree polymerization (DP) of their blocks, but also provides a tool to investigate pH induced dynamic covalent interaction between glycopolymers and phenylboronic acid derivatives or a light for designing novel drug delivery carriers.

scholarly journals pH-Responsive Poly(Ethylene Glycol)-block-Polylactide Micelles for Tumor-Targeted Drug Delivery

2017 ◽  
Vol 18 (9) ◽  
pp. 2711-2722 ◽  
Author(s):  
Lin Xiao ◽  
Lixia Huang ◽  
Firmin Moingeon ◽  
Mario Gauthier ◽  
Guang Yang
Keyword(s):  
Drug Delivery ◽  
Ethylene Glycol ◽  
Targeted Drug Delivery ◽  
Ph Responsive ◽  
Poly Ethylene Glycol ◽  
Targeted Drug ◽  
Poly Ethylene
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