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1. Influence of Membrane–Fusogen Distance on the Secondary Structure of Fusogenic Coiled Coil Peptides

Author:
Daudey, Geert A.; Schwieger, Christian; Rabe, Martin; Kros, Alexander
Source:
Langmuir 2019 v.35 no.16 pp. 5501-5508
ISSN:
1520-5827
Subject:
polyethylene glycol,   etc   ; lipopeptides; membrane fusion; models; spectroscopy;     Show all 5 Subjects
Abstract:
... Liposomal membrane fusion is an important tool to study complex biological fusion mechanisms. We use lipidated derivatives of the specific heterodimeric coiled coil pair E: (EIAALEK)₃ and K: (KIAALKE)₃ to study and control the fusion of liposomes. In this model system, peptides are tethered to their liposomes via a poly(ethylene glycol) (PEG) spacer and a lipid anchor. The efficiency of the fusion ...
DOI:
10.1021/acs.langmuir.8b04195

2. Monodisperse polyethylene glycol “brushes” with enhanced lipophilicity, and thermo and plasma stability

Author:
Li, Yu; Wang, Xuemeng; Chen, Yongping; Yang, Zhigang; Jiang, Zhong-Xing
Source:
Chemical communications 2019 v.55 no.13 pp. 1895-1898
ISSN:
1364-548X
Subject:
polyethylene glycol,   etc   ; biocompatible materials; chemical reactions; lipophilicity;     Show all 4 Subjects
Abstract:
... A convenient strategy was developed for highly branched and multifunctionalized peptidic monodisperse polyethylene glycol “brushes”, which exhibit remarkable physicochemical and biological properties and potential as versatile biomaterials. ...
DOI:
10.1039/c8cc09151j

3. Fast Ion Transport Pathway Provided by Polyethylene Glycol Confined in Covalent Organic Frameworks

Author:
Guo, Zhenbin; Zhang, Yuanyuan; Dong, Yu; Li, Jie; Li, Siwu; Shao, Pengpeng; Feng, Xiao; Wang, Bo
Source:
Journal of the American Chemical Society 2019 v.141 no.5 pp. 1923-1927
ISSN:
1520-5126
Subject:
polyethylene glycol,   etc   ; ions; lithium; porous media; salts;     Show all 5 Subjects
Abstract:
... Covalent organic frameworks (COFs) with well-tailored channels are able to accommodate ions and offer their conduction pathway. However, due to strong Coulombic interaction and the lack of transport medium, directly including lithium salts into the channels of COFs results in limited ion transport capability. Herein, we propose a strategy of incorporating low-molecular-weight polyethylene glycol ( ...
DOI:
10.1021/jacs.8b13551

4. Influence of Solvophilic Homopolymers on RAFT Polymerization-Induced Self-Assembly

Author:
Zhang, Yuan; Han, Guang; Cao, Mengjiao; Guo, Tianying; Zhang, Wangqing
Source:
Macromolecules 2018 v.51 no.11 pp. 4397-4406
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; composite polymers; polymerization;     Show all 3 Subjects
Abstract:
... A new method to modulate RAFT dispersion polymerization by introducing solvophilic homopolymers into the polymerization medium is proposed. It is discovered that in RAFT dispersion polymerization employing poly(4-vinylpyridine) trithiocarbonate macro-RAFT agent, the introduced solvophilic homopolymers of poly(N,N-dimethylacrylamide) (PDMA), poly(ethylene glycol), and poly(4-vinylpyridine) can grea ...
DOI:
10.1021/acs.macromol.8b00690

5. Characterization of trimethyl chitosan/polyethylene glycol derivatized chitosan blend as an injectable and degradable antimicrobial delivery system

Author:
Boles, Logan R.; Bumgardner, Joel D.; Fujiwara, Tomoko; Haggard, Warren O.; Guerra, Fernanda D.; Jennings, Jessica A.
Source:
International journal of biological macromolecules 2019 v.133 pp. 372-381
ISSN:
0141-8130
Subject:
polyethylene glycol,   etc   ; amikacin; cell viability; chitosan; fibroblasts; orthopedics; vancomycin;     Show all 7 Subjects
Abstract:
... Advanced local delivery systems are needed as adjunctive treatments for severe injuries with high infection rates, such as open fractures. Chitosan systems have been investigated as antimicrobial local delivery systems for orthopaedic infection but possess mismatches between elution and degradation properties. Derivatives of chitosan were chosen that have enhanced swelling ratios or tailorable deg ...
DOI:
10.1016/j.ijbiomac.2019.04.075

6. Significantly improving strength and oil-adsorption performance of regular porous polydimethylsiloxane via soft template approach

Author:
Wang, Tingting; Wang, Hao; Wang, Tongtong; Xu, Jin; Ke, Qingping
Source:
Colloids and surfaces 2019 v.572 pp. 10-17
ISSN:
0927-7757
Subject:
polyethylene glycol,   etc   ; absorbents; absorption; colloids; equipment; oils; polydimethylsiloxane; strength (mechanics);     Show all 8 Subjects
Abstract:
... A soft template, polyethylene glycol (PEG), was used for the preparation of polydimethylsiloxane (PDMS) oil absorbent. The preparation can be finished does not involve special equipment that normally required by conventional duplicating processes base on hard template. PEG/PDMS ratio, the key synthesis parameter, was systematically optimized in terms of both oil capacity and mechanical strength. C ...
DOI:
10.1016/j.colsurfa.2019.03.094

7. Development of Lignin-Based Terpolyester Film and Its Application to Separator Material for Electric Double-Layer Capacitor

Author:
Koda, Keiichi; Taira, Shogo; Kubota, Atsushi; Isozaki, Tomofumi; You, Xiangyu; Uraki, Yasumitsu; Sugimura, Kazuki; Nishio, Yoshiyuki
Source:
Journal of wood chemistry and technology 2019 v.39 no.3 pp. 198-213
ISSN:
1532-2319
Subject:
polyethylene glycol,   etc   ; capacitance; electrical equipment; electrochemistry; lignin; maleic anhydrides;     Show all 6 Subjects
Abstract:
... For new application of technical lignins as separator material for electric double-layer capacitor (EDLC), we tried first to prepare bipolyester film by melt-polycondensation of polyethylene glycol lignin (PEGL) and maleic anhydride. The EDLC assembled with this film, however, showed lower electrochemical performance than the reference EDLC with commercial cellulosic separator. Porous bipolyester ...
DOI:
10.1080/02773813.2018.1562472

8. Aqueous two-phase extraction of R-Phycoerythrin from marine macro-algae, Gelidium pusillum

Author:
Mittal, Rochak; Sharma, Richa; Raghavarao, KSMS
Source:
Bioresource technology 2019 v.280 pp. 277-286
ISSN:
0960-8524
Subject:
polyethylene glycol,   etc   ; Gelidium; absorbance; fluorescence; macroalgae; pH; phosphates; sugars; ultrafiltration;     Show all 9 Subjects
Abstract:
... Aqueous two-phase extraction (ATPE) of R-Phycoerythrin (R-PE), a fluorescent and commercially valuable protein, was carried out in two parallel schemes. In scheme-1, ATPE alone was employed, and in scheme-2, process-integration was attempted, where primary extract was subjected to precipitation before standardization of process parameters of ATPE. Scheme-1 with polyethylene glycol (PEG)-3350/potas ...
DOI:
10.1016/j.biortech.2019.02.044

9. Stability of silicones modified with PEO-silane amphiphiles: Impact of structure and concentration

Author:
Ngo, Bryan Khai D.; Lim, Kendrick K.; Stafslien, Shane J.; Grunlan, Melissa A.
Source:
Polymer degradation and stability 2019 v.163 pp. 136-142
ISSN:
0141-3910
Subject:
polyethylene glycol,   etc   ; additives; adsorption; hydrophilicity; silicone; surfactants; water uptake;     Show all 7 Subjects
Abstract:
... The efficacy of poly (ethylene oxide) (PEO)-based surface-modifying additives (SMAs), following the bulk-modification of silicones, requires sustained, water-driven PEO migration to the surface to achieve hydrophilicity and subsequent reduction of protein adsorption. Herein, a condensation cure silicone was modified with PEO-silane amphiphile SMAs (5–100 μmol per 1 g silicone) comprised of an olig ...
DOI:
10.1016/j.polymdegradstab.2019.03.010

10. Clouding observed for surface active, mPEG-grafted silica nanoparticles

Author:
Björkegren, Sanna; Nordstierna, Lars; Sundblom, Andreas; Palmqvist, Anders
Source:
RSC advances 2019 v.9 no.23 pp. 13297-13303
ISSN:
2046-2069
Subject:
polyethylene glycol,   etc   ; electrolytes; emulsions; nanoparticles; pH; separation; silane; silica;     Show all 8 Subjects
Abstract:
... Temperature-dependent phase-separation, clouding, has been observed in suspensions of silica nanoparticles surface-functionalized with methyl-poly(ethylene glycol) silane. Interparticle interactions and conformational changes of the grafted poly(ethylene glycol) chains influence the observed cloud points, and can be controlled by electrolyte concentration and pH. These findings open new routes to ...
DOI:
10.1039/c9ra00361d

11. Alkylation of isobutane and isobutene catalyzed by trifluoromethanesulfonic acid-taurine deep eutectic solvents in polyethylene glycol

Author:
Yu, Feng-Li; Gu, Yu-Long; Gao, Xun; Liu, Qi-Chun; Xie, Cong-Xia; Yu, Shi-Tao
Source:
Chemical communications 2019 v.55 no.33 pp. 4833-4836
ISSN:
1364-548X
Subject:
polyethylene glycol,   etc   ; alkylation; butanes; catalysts; gasoline; solvents; taurine;     Show all 7 Subjects
Abstract:
... Conventional acidic catalysts for isobutane and isobutene alkylation exhibit low alkylate selectivity. Herein, we employed an acidic deep eutectic solvent, consisting of trifluoromethanesulfonic acid and taurine, in polyethylene glycol as the catalyst. Its high conversion rate and selectivity, as well as recyclability, make it suitable for alkylate gasoline preparation. ...
DOI:
10.1039/c9cc01254k

12. PEO-based electrolytes blended with star polymers with precisely imprinted polymeric pseudo-crown ether cavities for alkali metal ion batteries

Author:
Xiao, Zhuliu; Zhou, Binghua; Wang, Jirong; Zuo, Cai; He, Dan; Xie, Xiaolin; Xue, Zhigang
Source:
Journal of membrane science 2019 v.576 pp. 182-189
ISSN:
0376-7388
Subject:
polyethylene glycol,   etc   ; artificial membranes; batteries; cations; crosslinking; metal ions; potassium;     Show all 7 Subjects
Abstract:
... Tailor-made star polymers comprised of cross-linked cores containing polymeric pseudo-crown ether cavities and linear poly(ethylene oxide) (PEO) arms are designed via cation template-assisted cyclopolymerization. The pseudo-crown ether cavities in cross-linked cores can coordinate with alkali metal cations and offer more cation diffusion channels. Moreover, the functional linear PEO arms are benef ...
DOI:
10.1016/j.memsci.2019.01.051

13. Preparation of fluoropolymer materials with different porous morphologies by an emulsion template method using supercritical carbon dioxide as a medium

Author:
Chen, Jian; Azhar, Umair; Wang, Yongkang; Liang, Jihong; Geng, Bing
Source:
RSC advances 2019 v.9 no.20 pp. 11331-11340
ISSN:
2046-2069
Subject:
polyethylene glycol,   etc   ; carbon dioxide; emulsions; scanning electron microscopy; solvents; surfactants;     Show all 6 Subjects
Abstract:
... The choice of a suitable surfactant is key to the formation of a stable water-in-CO₂ (W/C) or CO₂-in-water (C/W) emulsion. It is even more critical in stabilization of the emulsion containing carbon dioxide (CO₂). In this study, the successful preparation of W/C emulsion was achieved by using the amphiphilic block polymer poly(ethylene glycol) methyl ether-b-poly(trifluoroethyl methacrylate) (mPEG ...
DOI:
10.1039/c9ra00777f

14. Therapeutic effects and anti-metastasis effects of cationic liposomes against pancreatic cancer metastasis in vitro and in vivo

Author:
Ichihara, Hideaki; Motomura, Muneaki; Matsumoto, Yoko
Source:
Biochemical and biophysical research communications 2019 v.511 no.3 pp. 504-509
ISSN:
0006-291X
Subject:
polyethylene glycol,   etc   ; animal models; humans; metastasis; pancreatic neoplasms; pseudopodia; therapeutics;     Show all 7 Subjects
Abstract:
... The anti-metastatic effects of cationic liposomes (CL) composed of 87 mol% dimyristoylphosphatidylcholine (DMPC), 8 mol% O,O′-ditetradecanoyl-N-(α–trimethylammonioacetyl) diethanolamine chloride (2C14ECl) and 5 mol% polyoxyethylene(21) dodecyl ether (C12(EO)21) was investigated for human pancreatic cancer (BxPC-3) cells. The inhibitory effect of CL on the migration of BxPC-3 cells was observed bas ...
DOI:
10.1016/j.bbrc.2019.02.116

15. Polyrotaxane-based biointerfaces with dynamic biomaterial functions

Author:
Arisaka, Yoshinori; Yui, Nobuhiko
Source:
Journal of materials chemistry B 2019 v.7 no.13 pp. 2123-2129
ISSN:
2050-7518
Subject:
polyethylene glycol,   etc   ; alpha-cyclodextrin; biocompatible materials; cytoskeleton; ligands; moieties; receptors;     Show all 7 Subjects
Abstract:
... The molecular mobility of cyclic molecules (e.g. α-cyclodextrins) threaded along a linear polymer chain (e.g. poly(ethylene glycol)) in polyrotaxanes is a unique feature for biomaterials with dynamic functionality. Surfaces with molecular mobility can be obtained by introducing polyrotaxanes. The molecular mobility of polyrotaxane-based surfaces can be modulated by changing the number of threaded ...
DOI:
10.1039/c9tb00256a

16. Free Surface-Induced Glass-Transition Temperature Suppression of Simulated Polymer Chains

Author:
Wu, Chaofu
Source:
Journal of physical chemistry 2019 v.123 no.14 pp. 9237-9246
ISSN:
1932-7455
Subject:
polyethylene glycol,   etc   ; cooling; crystallization; glass transition; glass transition temperature; models;     Show all 6 Subjects
Abstract:
... Glass-transition temperatures (Tg’s) in poly(ethylene oxide) chains of 250 monomers as typical examples have been extensively simulated with the systematically coarse-grained potentials. The studied model systems include two 1-chain systems without and with the periodic boundary condition and two 8-chain systems in the NVT and NPT ensembles, which are labeled as nopbc, pbc, NVT, and NPT, respectiv ...
DOI:
10.1021/acs.jpcc.9b01253

17. Modifying the Band Gap of Semiconducting Two-Dimensional Materials by Polymer Assembly into Different Structures

Author:
Liao, Chih-Kai; Phan, Jasmine; Herrera, Maura; Mahmoud, Mahmoud A.
Source:
Langmuir 2019 v.35 no.14 pp. 4956-4965
ISSN:
1520-5827
Subject:
polyethylene glycol,   etc   ; nanoparticles; optical properties; photoluminescence; strength (mechanics); thiols; tungsten;     Show all 7 Subjects
Abstract:
... Polyethylene glycol (PEG) assembled on the surface of two-dimensional tungsten disulfide (WS₂) into a limited number of nanoislands (NIs), nanoshells (NSs), and granular nanoparticulates (GNPs) depending on its chain length. NI assemblies showed a nonmeasurable shift of photoluminescence (PL) and the A and B absorption peaks of WS₂. This confirmed that the electronic doping by thiol is not effecti ...
DOI:
10.1021/acs.langmuir.9b00205

18. Space-Charge Effects at the Li₇La₃Zr₂O₁₂/Poly(ethylene oxide) Interface

Author:
Brogioli, Doriano; Langer, Frederieke; Kun, Robert; La Mantia, Fabio
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 11999-12007
ISSN:
1944-8252
Subject:
polyethylene glycol,   etc   ; activation energy; batteries; ceramics; electrostatic interactions; ions; lithium;     Show all 7 Subjects
Abstract:
... Composites consisting of garnet-type Li₇La₃Zr₂O₁₂ (LLZO) ceramic particles dispersed in a solid polymer electrolyte based on poly(ethylene oxide) (PEO) have recently been investigated as a possible electrolyte material in all solid state Li ion batteries. The interface between the two materials, that is, LLZO/PEO, is of special interest for the transport of lithium ions in the composite. For obtai ...
DOI:
10.1021/acsami.8b19237

19. Impedance‐based viscoelastic flow cytometry

Author:
Serhatlioglu, Murat; Asghari, Mohammad; Tahsin Guler, Mustafa; Elbuken, Caglar
Source:
Electrophoresis 2019 v.40 no.6 pp. 906-913
ISSN:
0173-0835
Subject:
polyethylene glycol,   etc   ; electrophoresis; erythrocytes; flow cytometry; humans; polystyrenes; viscoelasticity;     Show all 7 Subjects
Abstract:
... Elastic nature of the viscoelastic fluids induces lateral migration of particles into a single streamline and can be used by microfluidic based flow cytometry devices. In this study, we investigated focusing efficiency of polyethylene oxide based viscoelastic solutions at varying ionic concentration to demonstrate their use in impedimetric particle characterization systems. Rheological properties ...
DOI:
10.1002/elps.201800365

20. Elastic and Inelastic Contributions to Thermal Transport between Chemical Groups and Thermal Rectification in Molecules

Author:
Reid, Korey M.; Pandey, Hari Datt; Leitner, David M.
Source:
Journal of physical chemistry 2019 v.123 no.10 pp. 6256-6264
ISSN:
1932-7455
Subject:
polyethylene glycol,   etc   ; ambient temperature; anthracenes; azulene; moieties; thermal conductivity;     Show all 6 Subjects
Abstract:
... Thermal boundary conductance is computed between chemical groups in a molecule consisting of two moieties, anthracene and azulene, bridged by a polyethylene glycol (PEG) oligomer. Because of the vibrational mismatch between the two moieties and the PEG oligomer, both linear and nonlinear coupling between the chemical groups contribute to the thermal boundary conductance, where linear coupling cont ...
DOI:
10.1021/acs.jpcc.8b11640