Cyanide free contraction of disclosed 1,4-dioxane ring as a route to cobalt bis(dicarbollide) derivatives with short spacer between the boron cage and terminal functional group

2015 ◽  
Vol 44 (21) ◽  
pp. 9860-9871 ◽  
Author(s):  
Akim V. Shmal'ko ◽  
Marina Yu. Stogniy ◽  
Grigorii S. Kazakov ◽  
Sergey A. Anufriev ◽  
Igor B. Sivaev ◽  
...  
Keyword(s):  
Functional Group ◽  
Terminal Functional Group ◽  
Dioxane Ring

The 1,4-dioxane derivative of cobalt bis(dicarbollide) reacts with dialkylsulfides and triphenylphosphine to give the corresponding sulfonium and phosphonium derivatives.

Hydrophobic Carbon Dots from Aliphatic Compounds with One Terminal Functional Group

2019 ◽  
Vol 123 (36) ◽  
pp. 22447-22456 ◽  
Author(s):  
Keyang Yin ◽  
Dandan Lu ◽  
Liping Wang ◽  
Quanxin Zhang ◽  
Junying Hao ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Functional Group ◽  
Aliphatic Compounds ◽  
Terminal Functional Group

scholarly journals Silica-Polystyrene Nanocomposite Particles Synthesized by Nitroxide-Mediated Polymerization and Their Encapsulation through Miniemulsion Polymerization

2006 ◽  
Vol 2006 ◽  
pp. 1-10 ◽  
Author(s):  
Bérangère Bailly ◽  
Anne-Carole Donnenwirth ◽  
Christèle Bartholome ◽  
Emmanuel Beyou ◽  
Elodie Bourgeat-Lami
Keyword(s):  
Silica Nanoparticles ◽  
Functional Group ◽  
Silica Surface ◽  
Miniemulsion Polymerization ◽  
Molecular Weights ◽  
Transmission Electron ◽  
Shell Particles ◽  
Terminal Functional Group ◽  
Nitroxide Mediated Polymerization

Polystyrene (PS) chains with molecular weights comprised between 8000 and 64000g⋅mol-1and narrow polydispersities were grown from the surface of silica nanoparticles (Aerosil A200 fumed silica and Stöber silica, resp.) through nitroxide-mediated polymerization (NMP). Alkoxyamine initiators based on N-tert-butyl-1-diethylphosphono-2,2-dimethylpropyl nitroxide (DEPN) and carrying a terminal functional group have been synthesized in situ and grafted to the silica surface. The resulting grafted alkoxyamines have been employed to initiate the growth of polystyrene chains from the inorganic surface. The maximum grafting density of the surface-tethered PS chains was estimated and seemed to be limited by initiator confinement at the interface. Then, the PS-grafted Stöber silica nanoparticles were entrapped inside latex particles via miniemulsion polymerization. Transmission electron microscopy indicated the successful formation of silica-polystyrene core-shell particles.

scholarly journals Influence of the nature of the alkanethiol terminal group on the electrochemical stability and blocking ability of self-assembled nanofilms on Au electrode

2021 ◽  
Vol 340 ◽  
pp. 01013
Author(s):  
Svetlana Ovchinnikova ◽  
Tatyana Aleksandrova
Keyword(s):  
Functional Group ◽  
Energy State ◽  
Terminal Group ◽  
Electrochemical Stability ◽  
Self Assembled Monolayers ◽  
Oh Groups ◽  
End Groups ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Terminal Functional Group

We studied the effect of the nature of the terminal group of thiols with the same chain length HS (CH2)8 – R (R: -CH3, -CH2OH, -NH2) on the electrodesorption behaviour of well-formed SAMs (the self-assembled monolayers), their stability and blocking ability using voltammetry and chronoamperometry. The nature of the terminal functional group determines the surface properties of SAM and provides the basis for subsequent interactions (for example, with peptides, proteins, DNA) in order to create sensors and bioagents. For the studied thiols, the hydrophilicity of the end groups increases in the series -CH3<< -NH2 ≤ -CH2OH; they also differ in polarity and the possibility of protonation of the amino group. For thiols with -CH3 and -CH2OH groups, an increase in the hydrophilicity of the terminal group leads to the formation of less stable and less ordered films. The replacement of carbon by nitrogen with approximately the same hydrophilicity of the groups (-CH2OH and -NH2) leads to the formation of a more stable film consisting of molecules in the same energy state, butwith poorer insulatingproperties.

scholarly journals Effects of terminal group and chain length on temperature-responsive chromatography utilizing poly(N-isopropylacrylamide) synthesized via RAFT polymerization

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 73217-73224 ◽  
Author(s):  
Yuki Hiruta ◽  
Yuhei Nagumo ◽  
Atsushi Miki ◽  
Teruo Okano ◽  
Hideko Kanazawa
Keyword(s):  
Chain Length ◽  
Functional Group ◽  
Raft Polymerization ◽  
Stationary Phases ◽  
Terminal Group ◽  
Temperature Dependent ◽  
Temperature Responsive ◽  
Silica Beads ◽  
Elution Behavior ◽  
Terminal Functional Group

Even using the same homo poly(N-isopropylacrylamide) immobilized silica beads as stationary phases, terminal functional group and chain length significantly affected temperature-dependent elution behavior of steroids.

Effect of terminal functional group size on ferroelectric and antiferroelectric properties of liquid crystals

2005 ◽  
Vol 32 (11-12) ◽  
pp. 1483-1498 ◽  
Author(s):  
Stephen J. Cowling ◽  
Alan W. Hall ◽  
John W. Goodby
Keyword(s):  
Liquid Crystals ◽  
Group Size ◽  
Functional Group ◽  
Terminal Functional Group

scholarly journals Preparation of Three-Armed Star Polystyrene by Reaction of Prepolymer Having a Terminal Functional Group with Triisocyanate

1987 ◽  
Vol 19 (9) ◽  
pp. 1013-1023 ◽  
Author(s):  
Toshiaki Kitano ◽  
Takashi Yamamoto ◽  
Yasuo Okemoto ◽  
Shinichi Itsuno ◽  
Koichi Ito
Keyword(s):  
Functional Group ◽  
Terminal Functional Group
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