Fabrication of uniform thin coatings of multi-walled carbon nanotubes (MWCNTs) by electrophoretic deposition (EPD) on semiconductor (silicon) substrates with 3-aminopropyl-triethoxysilane (APTES) surface functionalization has been studied extensively in this report. The gradual deposition and eventual film formation of the carbon nanotubes (CNTs) is greatly assisted by the Coulombic force of at...

N-Propylsalicylaldimino-functionalized SBA-15 mesoporous silica was prepared, characterized and used as an adsorbent for heavy metal ions. The organic-inorganic hybrid material was obtained using successive grafting procedures of SBA-15 silica with 3-aminopropyl-triethoxysilane and salicylaldehyde, respectively. For comparison an amorphous silica gel was functionalized using the same procedure....

Time-resolved anisotropy decays of a fluorescent cationic solute, rhodamine 6G (R6G), in Ludox sols were measured to characterize the extent of the ionic binding of the probe to silica particles after modification of the surface with neutral or cationic silane coupling agents. The anisotropy decays provided direct evidence for distribution of the dye between the aqueous solution (picosecond dec...

The surface functionalization of TiO2-based materials with alkylsilanes is attractive in several cutting-edge applications, such as photovoltaics, sensors, and nanocarriers for the controlled release of bioactive molecules. (3-Aminopropyl)triethoxysilane (APTES) is able to self-assemble to form monolayers on TiO2 surfaces, but its adsorption geometry and solar-induced photodegradation pathways ...

Patterned poly(N-isopropylacrylamide) (PNIPAAm) brushes were fabricated on oxidized silicon wafers by surface-initiated atom transfer radical polymerization of N-isopropylacrylamide from a micropatterned initiator. The patterned surface initiator was prepared by microcontact-printing octadecyltrichlorosilane and backfilling with 3-(aminopropyl)triethoxysilane followed by amidization with 2-brom...

Nonlinear optical Sum and Difference-Frequency spectroscopies are used to probe and model the surface of thiophenol-functionalised gold nanoparticles grafted on a Si(100) substrate through two different silanization procedures. By scanning the [980-1100 cm(-1)] infrared spectral range with the CLIO Free Electron Laser, ring deformation vibrations of adsorbed thiophenol are investigated. Quantit...

The host-guest interaction of a series of cyclohexyl-appended guests with cucurbit[8]uril (Q[8]) was studied by ¹H NMR spectroscopy, isothermal titration calorimetry (ITC), and X-ray crystallography. The X-ray structure revealed that two cycloalkane moieties can be simultaneously encapsulated in the hydrophobic cavity of the Q[8] host to form a ternary complex for the first time.

?-Glutamyl transpeptidase (GGT) catalyzes the transfer of glutathione’s ?-glutamyl group and related amides to water, amino acids or peptides, utilizes a conserved Thr residue process its own polypeptide chain into large small subunit that then assemble produce catalytically competent enzyme. In this study, magnetic cross-linked enzyme aggregates (mCLEAs) transpeptidase-specialized variant (N45...

mesoporous silica nanoparticles with unique structure (sba-15) were synthesized and modified by [3-(2-aminoethylamino) propyl] trimethoxysilane (aeaptms). the synthesized nanoparticles were characterized by tga, n­2­ adsorption, sem, ftir, chn elemental analysis. the total weight loss for the modified sba-15 is 15.2% and thermal analysis revealed that 1.5 mmol aeaptms/1g sba-15 had been grafted...

• Amino modified SBA-15 behave as high capacity anion-exchangers Modified adsorbents are good candidates d-SPE sorbents in QuEChERS protocol Signal-to noise ratio of target pollutants is affected by the type sorbent Interactions between sugars and amino materials pH dependent Charge density distribution explains loss recoveries In analysis contaminants food products, sample preparation performe...