Pulsed Radio Frequency Plasma Polymerization of Allyl Alcohol:  Controlled Deposition of Surface Hydroxyl Groups

Langmuir ◽  
1996 ◽  
Vol 12 (12) ◽  
pp. 2995-3002 ◽  
Author(s):  
Christopher L. Rinsch ◽  
Xiaolan Chen ◽  
V. Panchalingam ◽  
Robert C. Eberhart ◽  
Jenn-Hann Wang ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Allyl Alcohol ◽  
Plasma Polymerization ◽  
Hydroxyl Groups ◽  
Radio Frequency Plasma ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Frequency Plasma ◽  
Controlled Deposition

scholarly journals Radio frequency plasma assisted surface modification of Fe3O4 nanoparticles using polyaniline/polypyrrole for bioimaging and magnetic hyperthermia applications

2021 ◽  
Vol 32 (9) ◽  
Author(s):  
Beena Mol ◽  
Ansar Ereath Beeran ◽  
Prasad S. Jayaram ◽  
Prabha Prakash ◽  
Ramapurath S. Jayasree ◽  
...  
Keyword(s):  
Surface Modification ◽  
Radio Frequency ◽  
Plasma Polymerization ◽  
Magnetic Hyperthermia ◽  
Radio Frequency Plasma ◽  
Specific Loss ◽  
Specific Loss Power ◽  
Frequency Plasma ◽  
The Magnetic Field ◽  
Superparamagnetic Properties

AbstractSurface modification of superparamagnetic Fe3O4 nanoparticles using polymers (polyaniline/polypyrrole) was done by radio frequency (r.f.) plasma polymerization technique and characterized by XRD, TEM, TG/DTA and VSM. Surface-passivated Fe3O4 nanoparticles with polymers were having spherical/rod-shaped structures with superparamagnetic properties. Broad visible photoluminescence emission bands were observed at 445 and 580 nm for polyaniline-coated Fe3O4 and at 488 nm for polypyrrole-coated Fe3O4. These samples exhibit good fluorescence emissions with L929 cellular assay and were non-toxic. Magnetic hyperthermia response of Fe3O4 and polymer (polyaniline/polypyrrole)-coated Fe3O4 was evaluated and all the samples exhibit hyperthermia activity in the range of 42–45 °C. Specific loss power (SLP) values of polyaniline and polypyrrole-coated Fe3O4 nanoparticles (5 and 10 mg/ml) exhibit a controlled heat generation with an increase in the magnetic field.

The synthesis and structure of silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complexes

1986 ◽  
Vol 51 (7) ◽  
pp. 1430-1438 ◽  
Author(s):  
Alena Reissová ◽  
Zdeněk Bastl ◽  
Martin Čapka
Keyword(s):  
Free Surface ◽  
Hydroxyl Groups ◽  
Titanium Complex ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Free Hydroxyl ◽  
Cyclopentadienyl Anion

The title complexes have been obtained by functionalization of silica with cyclopentadienylsilanes of the type Rx(CH3)3 - xSi(CH2)nC5H5 (x = 1-3, n = 0, 1, 3), trimethylsilylation of free surface hydroxyl groups, transformation of the bonded cyclopentadienyl group to the cyclopentadienyl anion, followed by coordination of (h5-cyclopentadienyl)trichlorotitanium. The effects of single steps of the above immobilization on texture of the support, the number of free hydroxyl groups, the coverage of the surface by cyclopentadienyl groups and the degree of their utilization in anchoring the titanium complex have been investigated. ESCA study has shown that the above anchoring leads to formation of the silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complex.

scholarly journals Modification of a Fur Semi-finished Sheepskins by Radio Frequency Plasma in an Inert Gas Medium

2021 ◽  
Vol 1923 (1) ◽  
pp. 012020
Author(s):  
E A Pankova ◽  
F S Sharifullin ◽  
G R Rakhmatullina ◽  
R R Shagivalieva ◽  
V S Zheltukhin
Keyword(s):  
Radio Frequency ◽  
Inert Gas ◽  
Radio Frequency Plasma ◽  
Frequency Plasma ◽  
Gas Medium
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