Zwitterionic-phosphonate block polymer as anti-fouling coating for biomedical metals

Rare Metals ◽  
2021 ◽  
Author(s):  
Ya-Hui Gu ◽  
Hong-Wei Liu ◽  
Xiao-Han Dong ◽  
Zhuang-Zhuang Ma ◽  
You-Xin Li ◽  
...  
Keyword(s):  
Block Polymer

Size Control of Block Polymer Templated Mesoporous Silicate Materials

2000 ◽  
Vol 628 ◽  
Author(s):  
Takeo Yamada ◽  
Keisuke Asai ◽  
Kenkichi Ishigure ◽  
Akira Endo ◽  
Hao S. Zhou ◽  
...  
Keyword(s):  
Mesoporous Materials ◽  
Molecular Sieve ◽  
Mesoporous Material ◽  
Triblock Copolymer ◽  
Size Control ◽  
Block Polymer ◽  
New Class ◽  
Mesoporous Silicate ◽  
Cubic Structure ◽  
Silicate Materials

ABSTRACTMesoporous materials have attracted considerable interest because of applications in molecular sieve, catalyst, and adsorbent. It will be useful for new functional device if functional molecules can be incorporated into the pore of mesoporous material. However, it is necessary to synthesize new mesoporous materials with controlled large pore size. Recently, new class of mesoporous materials has been prepared using triblock copolymer as a template. In this paper, we reported that hexagonal and cubic structure silicate mesoporous materials can be synthesized through triblock copolymer templating, and their size was controlled by synthesis condition at condensation.

scholarly journals Optimization of Sb2S3 Nanocrystal Concentrations in P3HT: PCBM Layers to Improve the Performance of Polymer Solar Cells

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2152
Author(s):  
E. M. Mkawi ◽  
Y. Al-Hadeethi ◽  
R. S. Bazuhair ◽  
A. S. Yousef ◽  
E. Shalaan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Doping Concentration ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Acid Methyl Ester ◽  
Visible Absorption ◽  
Block Polymer ◽  
Coating Method ◽  
Electronic Parameters ◽  
P Type

In this study, polymer solar cells were synthesized by adding Sb2S3 nanocrystals (NCs) to thin blended films with polymer poly(3-hexylthiophene)(P3HT) and [6,6]-phenyl-C61-butyric-acid-methyl-ester (PCBM) as the p-type material prepared via the spin-coating method. The purpose of this study is to investigate the dependence of polymer solar cells’ performance on the concentration of Sb2S3 nanocrystals. The effect of the Sb2S3 nanocrystal concentrations (0.01, 0.02, 0.03, and 0.04 mg/mL) in the polymer’s active layer was determined using different characterization techniques. X-ray diffraction (XRD) displayed doped ratio dependences of P3HT crystallite orientations of P3HT crystallites inside a block polymer film. Introducing Sb2S3 NCs increased the light harvesting and regulated the energy levels, improving the electronic parameters. Considerable photoluminescence quenching was observed due to additional excited electron pathways through the Sb2S3 NCs. A UV–visible absorption spectra measurement showed the relationship between the optoelectronic properties and improved surface morphology, and this enhancement was detected by a red shift in the absorption spectrum. The absorber layer’s doping concentration played a definitive role in improving the device’s performance. Using a 0.04 mg/mL doping concentration, a solar cell device with a glass /ITO/PEDOT:PSS/P3HT-PCBM: Sb2S3:NC/MoO3/Ag structure achieved a maximum power conversion efficiency of 2.72%. These Sb2S3 NCs obtained by solvothermal fabrication blended with a P3HT: PCBM polymer, would pave the way for a more effective design of organic photovoltaic devices.

scholarly journals Novel Preparation of Noncovalent Modified GO Using RAFT Polymerization to Reinforce the Performance of Waterborne Epoxy Coatings

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 348 ◽  
Author(s):  
Baolei Liu ◽  
Mingqian Wang ◽  
Ying Liang ◽  
Zhicheng Zhang ◽  
Guohong Ren ◽  
...  
Keyword(s):  
Raft Polymerization ◽  
Salt Spray ◽  
Thermo Gravimetric Analysis ◽  
Analytical Techniques ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Block Polymer ◽  
Reversible Addition ◽  
Waterborne Epoxy ◽  
And Performance

This work launches the first-ever report on the fabrication of waterborne epoxy-graphene oxide (GO) coatings (WEGC) using a block polymer as a dispersant of GO, wherein the block polymer was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization of acrylic acid and oligo(ethylene glycol) methyl ether methacrylate A number of analytical techniques, such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermo gravimetric analysis (TGA), and salt spray tests, were utilized to explore the morphology and performance of the WEGC. It was confirmed that POEGMA950-b-PAA attached to the GO nanosheets, increasing the integral space of the sheets. Modified GO (MGO) layers were well-dispersed in the epoxy matrix through the formation of a GO-dispersant-epoxy ternary molecular structure. Furthermore, the presence of MGO substantially influenced the thermal properties, mechanical properties, and anticorrosion performance of the WEGC. TGA, salt spray tests, and pull-off testsshowed that 0.5 wt.% MGO content achieved the greatest improvement in the evaluated properties.

Bone-Targeted Cisplatin-Complexed Poly(γ-benzyl-L-glutamate)-Poly(glutamic acid) Block Polymer Nanoparticles: An Electrochemical Approach

2015 ◽  
Vol 2 (5) ◽  
pp. 748-754 ◽  
Author(s):  
Laura de Miguel ◽  
Gerardo Cebrián-Torrejón ◽  
Eric Caudron ◽  
Ludovica Arpinati ◽  
Antonio Doménech-Carbó ◽  
...  
Keyword(s):  
Glutamic Acid ◽  
Polymer Nanoparticles ◽  
Block Polymer ◽  
Electrochemical Approach

scholarly journals ATRP-based synthesis of a pH-sensitive amphiphilic block polymer and its self-assembled micelles with hollow mesoporous silica as DOX carriers for controlled drug release

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 29986-29996
Author(s):  
Xiuxiu Qi ◽  
Hongmei Yan ◽  
Yingxue Li
Keyword(s):  
Controlled Release ◽  
Drug Release ◽  
Self Assembly ◽  
Drug Loading ◽  
Controlled Drug Release ◽  
Ph Sensitive ◽  
Core Shell ◽  
Assembly Process ◽  
Block Polymer ◽  
Hollow Mesoporous Silica

A pH-sensitive core–shell nanoparticle (HMS@C18@PSDMA-b-POEGMA) was developed via a self-assembly process as the carrier of anticancer drug doxorubicin (DOX) for drug loading and controlled release.

scholarly journals Effects of Grafting Density on Block Polymer Self-Assembly: From Linear to Bottlebrush

ACS Nano ◽  
2017 ◽  
Vol 11 (11) ◽  
pp. 11632-11641 ◽  
Author(s):  
Tzu-Pin Lin ◽  
Alice B. Chang ◽  
Shao-Xiong Luo ◽  
Hsiang-Yun Chen ◽  
Byeongdu Lee ◽  
...  
Keyword(s):  
Self Assembly ◽  
Block Polymer ◽  
Grafting Density

scholarly journals Unlocking Chain Exchange in Highly Amphiphilic Block Polymer Micellar Systems: Influence of Agitation

2014 ◽  
Vol 3 (11) ◽  
pp. 1106-1111 ◽  
Author(s):  
Ryan P. Murphy ◽  
Elizabeth G. Kelley ◽  
Simon A. Rogers ◽  
Millicent O. Sullivan ◽  
Thomas H. Epps
Keyword(s):  
Block Polymer ◽  
Micellar Systems

Photoconductivity enhancement and charge transport properties in ruthenium-containing block copolymer/carbon nanotube hybrids

Nanoscale ◽  
2018 ◽  
Vol 10 (14) ◽  
pp. 6474-6486 ◽  
Author(s):  
Kin Cheung Lo ◽  
King In Hau ◽  
Wai Kin Chan
Keyword(s):  
Carbon Nanotube ◽  
Block Copolymer ◽  
Charge Transport ◽  
Transport Properties ◽  
Statistical Models ◽  
Block Polymer ◽  
Theoretical Approaches

The charge transport properties of block polymer/carbon nanotube hybrids were studied by experimental/theoretical approaches and application of vigorous statistical models.

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