Preparation of thin films containing sulfonic acid and carboxylic acid groups by plasma polymerization of perfluorobenzene/sulfur dioxide and perfluorobenzene/carbon dioxide mixtures

1991 ◽  
Vol 26 (2) ◽  
pp. 187-191 ◽  
Author(s):  
N. Inagaki ◽  
S. Tasaka ◽  
Z. Chengfei
Keyword(s):  
Thin Films ◽  
Carbon Dioxide ◽  
Carboxylic Acid ◽  
Sulfur Dioxide ◽  
Sulfonic Acid ◽  
Plasma Polymerization ◽  
Carboxylic Acid Groups

Halogen-free fixation of carbon dioxide into cyclic carbonates via bifunctional organocatalysts

2021 ◽  
Vol 23 (3) ◽  
pp. 1147-1153
Author(s):  
Feng Zhang ◽  
Safak Bulut ◽  
Xiaojun Shen ◽  
Minghua Dong ◽  
Yanyan Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carboxylic Acid ◽  
Coupling Reaction ◽  
Cyclic Carbonates ◽  
Synergy Effect ◽  
Carboxylic Acid Groups ◽  
Halogen Free ◽  
Fixation Of Carbon Dioxide

Bifunctional organocatalysts bearing diamine and carboxylic acid groups efficiently catalyze the coupling reaction of CO2 with epoxides under halogen-free conditions due to a synergy effect.

scholarly journals Mechanochemical defect engineering of HKUST-1 and impact of the resulting defects on carbon dioxide sorption and catalytic cyclopropanation

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 19822-19831 ◽  
Author(s):  
Timothy Steenhaut ◽  
Nicolas Grégoire ◽  
Gabriella Barozzino-Consiglio ◽  
Yaroslav Filinchuk ◽  
Sophie Hermans
Keyword(s):  
Carbon Dioxide ◽  
Carboxylic Acid ◽  
Catalytic Properties ◽  
Gas Storage ◽  
Defect Engineering ◽  
Carboxylic Acid Groups ◽  
Carbon Dioxide Sorption

Defective HKUST-1 was prepared by salt- or liquid-assisted grinding with post-synthetic treatments with alcohols. The defects identified as free carboxylic acid groups or reduced Cu(i) sites influence strongly gas storage and catalytic properties.

Surface Modification of Poly (alkyl/Arylphosphazene) Thin Films

2000 ◽  
Vol 629 ◽  
Author(s):  
John V. St. John ◽  
Patty Wisian-Neilson
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Chemical Resistance ◽  
Chemical Properties ◽  
Inorganic Polymers ◽  
Thin Polymer Films ◽  
Hydrophilic Interactions ◽  
Carboxylic Acid Groups ◽  
Polymer Interface ◽  
Thin Polymer

ABSTRACTPoly (methylphenylphosphazene) (PMPP) is an example of a unique class of inorganic polymers with alternating – (P=N)– backbones. Chemical modification of bulk PMPP can result in changes of physical properties such as chemical resistance, onset temperature of thermal degradation, elasticity, and flexibility. Surface modification of PMPP allows tailoring of the chemical properties at the polymer interface while maintaining the integrity of the bulk polymer. In this research, PMPP thin films were treated to form carboxylate or carboxylic acid groups at the surface. Surface modification was monitored by following changes in contact angle. The hydrophobic/hydrophilic interactions of carboxylated PMPP surfaces allow for mesoscale interactions of thin polymer films.

scholarly journals Grafting TRAIL through Either Amino or Carboxylic Groups onto Maghemite Nanoparticles: Influence on Pro-Apoptotic Efficiency

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 502
Author(s):  
Hanene Belkahla ◽  
Andrei Alexandru Constantinescu ◽  
Tijani Gharbi ◽  
Florent Barbault ◽  
Alexandre Chevillot-Biraud ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Cancer Therapy ◽  
Computational Study ◽  
Carcinoma Cells ◽  
Maghemite Nanoparticles ◽  
Carboxylic Acid Groups ◽  
Lung Carcinoma Cells ◽  
Biological Studies ◽  
Apoptotic Effect ◽  
Carboxylic Groups

Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNF cytokine superfamily. TRAIL is able to induce apoptosis through engagement of its death receptors DR4 and DR5 in a wide variety of tumor cells while sparing vital normal cells. This makes it a promising agent for cancer therapy. Here, we present two different ways of covalently grafting TRAIL onto maghemite nanoparticles (NPs): (a) by using carboxylic acid groups of the protein to graft it onto maghemite NPs previously functionalized with amino groups, and (b) by using the amino functions of the protein to graft it onto NPs functionalized with carboxylic acid groups. The two resulting nanovectors, NH-TRAIL@NPs-CO and CO-TRAIL@NPs-NH, were thoroughly characterized. Biological studies performed on human breast and lung carcinoma cells (MDA-MB-231 and H1703 cell lines) established these nanovectors are potential agents for cancer therapy. The pro-apoptotic effect is somewhat greater for CO-TRAIL@NPs-NH than NH-TRAIL@NPs-CO, as evidenced by viability studies and apoptosis analysis. A computational study indicated that regardless of whether TRAIL is attached to NPs through an acid or an amino group, DR4 recognition is not affected in either case.

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