scholarly journals Post-polymerization functionalization of poly(3,4-propylenedioxythiophene) (PProDOT) via thiol–ene “click” chemistry

2015 ◽  
Vol 3 (25) ◽  
pp. 5028-5034 ◽  
Author(s):  
Bin Wei ◽  
Liangqi Ouyang ◽  
Jinglin Liu ◽  
David C. Martin
Keyword(s):  
Conjugated Polymers ◽  
Click Chemistry ◽  
Surface Properties ◽  
Convenient Means

Post-polymerization functionalization using thiol–ene “click” chemistry provides an effective, convenient means to modify the surface properties of conjugated polymers such as poly(3,4-propylenedioxythiophene) (PProDOT).

scholarly journals Fabrication of Low-Fouling Surfaces on Alkyne-Functionalized Poly-(p-xylylenes) Using Click Chemistry

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 225
Author(s):  
Pei-Ju Chen ◽  
Hsien-Yeh Chen ◽  
Wei-Bor Tsai
Keyword(s):  
Thin Films ◽  
Conjugated Polymers ◽  
Click Chemistry ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Universal Method ◽  
Surface Immobilization ◽  
Poly Ethylene Glycol ◽  
Wide Range ◽  
Poly Ethylene

A facial, versatile, and universal method that breaks the substrate limits is desirable for antifouling treatment. Thin films of functional poly-p-xylylenes (PPX) that are deposited using chemical vapor deposition (CVD) provide a powerful platform for surface immobilization of molecules. In this study, we prepared an alkyne-functionalized PPX coating on which poly (sulfobetaine methacrylate-co-Az) could be conjugated via click chemistry. We found that the conjugated polymers were very stable and inhibited cell adhesion and protein adsorption effectively. The same conjugation strategy could also be applied to conjugate azide-containing poly (ethylene glycol) and poly (NIPAAm). The results indicate that our method provides a simple and robust tool for fabricating antifouling surfaces on a wide range of substrates using CVD technology of functionalized poly (p-xylylenes) for biosensor, diagnostics, immunoassay, and other biomaterial applications.

ChemInform Abstract: Click-Chemistry Approaches to π-Conjugated Polymers for Organic Electronics Applications

ChemInform ◽  
2016 ◽  
Vol 47 (46) ◽  
Author(s):  
Assunta Marrocchi ◽  
Antonio Facchetti ◽  
Daniela Lanari ◽  
Stefano Santoro ◽  
Luigi Vaccaro
Keyword(s):  
Conjugated Polymers ◽  
Click Chemistry ◽  
Organic Electronics

Click-chemistry as an efficient synthetic tool for the preparation of novel conjugated polymers

2005 ◽  
pp. 4333 ◽  
Author(s):  
Dirk Jan V. C. van Steenis ◽  
Olivier R. P. David ◽  
Gino P. F. van Strijdonck ◽  
Jan H. van Maarseveen ◽  
Joost N. H. Reek
Keyword(s):  
Conjugated Polymers ◽  
Click Chemistry

scholarly journals Click-chemistry approaches to π-conjugated polymers for organic electronics applications

2016 ◽  
Vol 7 (10) ◽  
pp. 6298-6308 ◽  
Author(s):  
Assunta Marrocchi ◽  
Antonio Facchetti ◽  
Daniela Lanari ◽  
Stefano Santoro ◽  
Luigi Vaccaro
Keyword(s):  
Conjugated Polymers ◽  
Click Chemistry ◽  
Organic Electronics

A survey of papers exploring the scope of click chemistry in the area of π-conjugated polymers for organic electronics is given.

Synthesis, characterization and properties of telechelic hybrid biodegradable polymers containing polyhedral oligomeric silsesquioxane (POSS)

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21435-21449 ◽  
Author(s):  
M. Jesús Fernández ◽  
M. Dolores Fernández ◽  
Mónica Cobos
Keyword(s):  
Click Chemistry ◽  
Surface Properties ◽  
Biodegradable Polymers ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Oligomeric Silsesquioxane

The incorporation of POSS into PLA and PCL by click chemistry alters the thermal and surface properties of the polymers.

Microtomy of spherical Al2O3 powders

1983 ◽  
Vol 41 ◽  
pp. 74-75
Author(s):  
E.J. Jenkins ◽  
D.S. Tucker ◽  
J.J. Hren
Keyword(s):  
Thin Film ◽  
Size Range ◽  
Particle Aggregation ◽  
Ion Milling ◽  
Thin Sections ◽  
Α Phase ◽  
Convenient Means ◽  
Van Der Waals Attraction ◽  
Negative Feature ◽  
Film Substrate

The size range of mineral and ceramic particles of one to a few microns is awkward to prepare for examination by TEM. Electrons can be transmitted through smaller particles directly and larger particles can be thinned by crushing and dispersion onto a substrate or by embedding in a film followed by ion milling. Attempts at dispersion onto a thin film substrate often result in particle aggregation by van der Waals attraction. In the present work we studied 1-10 μm diameter Al2O3 spheres which were transformed from the amprphous state to the stable α phase.After the appropriate heat treatment, the spherical powders were embedded in as high a density as practicable in a hard EPON, and then microtomed into thin sections. There are several advantages to this method. Obviously, this is a rapid and convenient means to study the microstructure of serial slices. EDS, ELS, and diffraction studies are also considerably more informative. Furthermore, confidence in sampling reliability is considerably enhanced. The major negative feature is some distortion of the microstructure inherent to the microtoming operation; however, this appears to have been surprisingly small. The details of the method and some typical results follow.

Biological and Surface Properties of C-Type Virus Particles Produced by Novikoff Ascites Hepatoma Cells

1977 ◽  
Vol 35 ◽  
pp. 388-389
Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg
Keyword(s):  
Surface Properties ◽  
Ricinus Communis ◽  
Rat Kidney ◽  
Leukemia Virus ◽  
Viral Envelope ◽  
Virus Particles ◽  
Chemically Induced ◽  
Sarcoma Virus ◽  
Hepatocarcinoma Cells ◽  
Type C

Several years ago Karasaki (1) reported the production of type C virus particles by Novikoff ascites hepatocarcinoma cells. More recently, Weinstein (2) has reported the presence of type C virus particles in cell cultures derived from transplantable and primary hepatocellular carcinomas. To date, the biological function of these virus and their significance in chemically induced hepatocarcinogenesis are unknown. The present studies were initiated to determine a possible role for type C virus particles in chemically induced hepatocarcinogenesis. This communication describes results of studies on the biological and surface properties of type C virus associated with Novikoff hepatocarcinoma cells.Ecotropic and xenotropic murine leukemia virus (MuLV) activity in ascitic fluid of Novikoff tumor-bearing rats was assayed in murine sarcoma virus transformed S+L- mouse cells and S+L- mink cells, respectively. The presence of sarcoma virus activity was assayed in non-virus-producing normal rat kidney (NRK) cells. Ferritin conjugates of concanavalin A (Fer-Con wheat germ agglutinin (Fer-WGA), and Ricinus communis agglutinins I and II (Fer-RCAI and Fer-RCAII) were used to probe the structure and topography of saccharide determinants present on the viral envelope.

Inelastic scattering at surfaces and interfaces

1986 ◽  
Vol 44 ◽  
pp. 392-393
Author(s):  
R. H. Ritchie ◽  
A. Howie
Keyword(s):  
Inelastic Scattering ◽  
Surface Properties ◽  
Correlation Energy ◽  
Condensed Matter ◽  
Charged Particles ◽  
Condensed Matter Physics ◽  
Optical Phonons ◽  
Exchange Correlation ◽  
Surfaces And Interfaces ◽  
Inelastic Interactions

An important part of condensed matter physics in recent years has involved detailed study of inelastic interactions between swift electrons and condensed matter surfaces. Here we will review some aspects of such interactions.Surface excitations have long been recognized as dominant in determining the exchange-correlation energy of charged particles outside the surface. Properties of surface and bulk polaritons, plasmons and optical phonons in plane-bounded and spherical systems will be discussed from the viewpoint of semiclassical and quantal dielectric theory. Plasmons at interfaces between dissimilar dielectrics and in superlattice configurations will also be considered.

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